<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.avis.com/role/AccountsPayableAndOtherCurrentLiabilities" xlink:href="car-20171231.xsd#AccountsPayableAndOtherCurrentLiabilities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/AccountsPayableAndOtherCurrentLiabilitiesAccountsPayableAndOtherCurrentLiabilitiesTables" xlink:href="car-20171231.xsd#AccountsPayableAndOtherCurrentLiabilitiesAccountsPayableAndOtherCurrentLiabilitiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/AccumulatedOtherComprehensiveIncomeDetail" xlink:href="car-20171231.xsd#AccumulatedOtherComprehensiveIncomeDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/Acquisitions" xlink:href="car-20171231.xsd#Acquisitions" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/AcquisitionsAdditionalInformationDetail" xlink:href="car-20171231.xsd#AcquisitionsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/AcquisitionsTables" xlink:href="car-20171231.xsd#AcquisitionsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/BasisOfPresentation" xlink:href="car-20171231.xsd#BasisOfPresentation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ChangesInUnrecognizedTaxBenefitsDetail" xlink:href="car-20171231.xsd#ChangesInUnrecognizedTaxBenefitsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/CommitmentsAndContingencies" xlink:href="car-20171231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/CommitmentsAndContingenciesAdditionalInformationDetail" xlink:href="car-20171231.xsd#CommitmentsAndContingenciesAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/CommitmentsAndContingenciesTables" xlink:href="car-20171231.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ComponentsOfCompanysVehiclesDetail" xlink:href="car-20171231.xsd#ComponentsOfCompanysVehiclesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ComponentsOfVehicleDepreciationAndLeaseChargesDetail" xlink:href="car-20171231.xsd#ComponentsOfVehicleDepreciationAndLeaseChargesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ComputationOfBasicAndDilutedEarningsPerShareDetail" xlink:href="car-20171231.xsd#ComputationOfBasicAndDilutedEarningsPerShareDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedBalanceSheets" xlink:href="car-20171231.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="car-20171231.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfOperations" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfStockholdersEquity" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfStockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical" xlink:href="car-20171231.xsd#ConsolidatedStatementsOfStockholdersEquityParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatingCondensedBalanceSheetsDetail" xlink:href="car-20171231.xsd#ConsolidatingCondensedBalanceSheetsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatingCondensedStatementsOfCashFlowsDetail" xlink:href="car-20171231.xsd#ConsolidatingCondensedStatementsOfCashFlowsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ConsolidatingCondensedStatementsOfOperationsDetail" xlink:href="car-20171231.xsd#ConsolidatingCondensedStatementsOfOperationsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ContractualMaturitiesOfCompanysCorporateDebtDetail" xlink:href="car-20171231.xsd#ContractualMaturitiesOfCompanysCorporateDebtDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangements" xlink:href="car-20171231.xsd#DebtUnderVehicleProgramsAndBorrowingArrangements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangementsAdditionalInformationDetail" xlink:href="car-20171231.xsd#DebtUnderVehicleProgramsAndBorrowingArrangementsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangementsTables" xlink:href="car-20171231.xsd#DebtUnderVehicleProgramsAndBorrowingArrangementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/DeferredIncomeTaxAssetsAndLiabilitiesDetail" xlink:href="car-20171231.xsd#DeferredIncomeTaxAssetsAndLiabilitiesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/DocumentAndEntityInformation" xlink:href="car-20171231.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/EarningsPerShare" xlink:href="car-20171231.xsd#EarningsPerShare" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/EarningsPerShareTables" xlink:href="car-20171231.xsd#EarningsPerShareTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/EmployeeBenefitPlans" xlink:href="car-20171231.xsd#EmployeeBenefitPlans" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/EmployeeBenefitPlansAdditionalInformationDetail" xlink:href="car-20171231.xsd#EmployeeBenefitPlansAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/EmployeeBenefitPlansTables" xlink:href="car-20171231.xsd#EmployeeBenefitPlansTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/FairValueOfDerivativeInstrumentsDetail" xlink:href="car-20171231.xsd#FairValueOfDerivativeInstrumentsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/FinancialInstruments" xlink:href="car-20171231.xsd#FinancialInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/FinancialInstrumentsAdditionalInformationDetail" xlink:href="car-20171231.xsd#FinancialInstrumentsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/FinancialInstrumentsTables" xlink:href="car-20171231.xsd#FinancialInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/FutureMinimumLeasePaymentsDetail" xlink:href="car-20171231.xsd#FutureMinimumLeasePaymentsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatements" xlink:href="car-20171231.xsd#GuarantorAndNonGuarantorConsolidatingFinancialStatements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsCashFlowsReconciliationGng201618Tables" xlink:href="car-20171231.xsd#GuarantorAndNonGuarantorConsolidatingFinancialStatementsCashFlowsReconciliationGng201618Tables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsReconciliationOfCashAndCashEquivalentsGng201618Tables" xlink:href="car-20171231.xsd#GuarantorAndNonGuarantorConsolidatingFinancialStatementsReconciliationOfCashAndCashEquivalentsGng201618Tables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsTables" xlink:href="car-20171231.xsd#GuarantorAndNonGuarantorConsolidatingFinancialStatementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IncomeTaxes" xlink:href="car-20171231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IncomeTaxesAdditionalInformationDetail" xlink:href="car-20171231.xsd#IncomeTaxesAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IncomeTaxesPretaxIncomeLossForDomesticAndForeignOperationsAdditionalInformationDetails" xlink:href="car-20171231.xsd#IncomeTaxesPretaxIncomeLossForDomesticAndForeignOperationsAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IncomeTaxesTables" xlink:href="car-20171231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IntangibleAssets" xlink:href="car-20171231.xsd#IntangibleAssets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IntangibleAssetsAdditionalInformationDetail" xlink:href="car-20171231.xsd#IntangibleAssetsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/IntangibleAssetsTables" xlink:href="car-20171231.xsd#IntangibleAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/LicensingActivities" xlink:href="car-20171231.xsd#LicensingActivities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/LicensingActivitiesAdditionalInformationDetail" xlink:href="car-20171231.xsd#LicensingActivitiesAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/LongTermDebtAndBorrowingArrangements" xlink:href="car-20171231.xsd#LongTermDebtAndBorrowingArrangements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/LongTermDebtAndBorrowingArrangementsAdditionalInformationDetail" xlink:href="car-20171231.xsd#LongTermDebtAndBorrowingArrangementsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/LongTermDebtAndBorrowingArrangementsTables" xlink:href="car-20171231.xsd#LongTermDebtAndBorrowingArrangementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/OtherCurrentAssets" xlink:href="car-20171231.xsd#OtherCurrentAssets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/OtherCurrentAssetsTables" xlink:href="car-20171231.xsd#OtherCurrentAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/OutstandingCommonStockEquivalentsThatWereAntiDilutiveDetail" xlink:href="car-20171231.xsd#OutstandingCommonStockEquivalentsThatWereAntiDilutiveDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/OutstandingCommonStockEquivalentsThatWereAntiDilutiveTickmarksDetail" xlink:href="car-20171231.xsd#OutstandingCommonStockEquivalentsThatWereAntiDilutiveTickmarksDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/PretaxIncomeLossForDomesticAndForeignOperationsDetail" xlink:href="car-20171231.xsd#PretaxIncomeLossForDomesticAndForeignOperationsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/PropertyAndEquipmentNet" xlink:href="car-20171231.xsd#PropertyAndEquipmentNet" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/PropertyAndEquipmentNetAdditionalInformationDetail" xlink:href="car-20171231.xsd#PropertyAndEquipmentNetAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/PropertyAndEquipmentNetTables" xlink:href="car-20171231.xsd#PropertyAndEquipmentNetTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ProvisionForBenefitFromIncomeTaxesDetail" xlink:href="car-20171231.xsd#ProvisionForBenefitFromIncomeTaxesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ReconciliationOfAdjustedEbitdaToIncomeLossDetail" xlink:href="car-20171231.xsd#ReconciliationOfAdjustedEbitdaToIncomeLossDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ReconciliationOfUSFederalIncomeTaxStatutoryRateAndEffectiveIncomeTaxRateDetail" xlink:href="car-20171231.xsd#ReconciliationOfUSFederalIncomeTaxStatutoryRateAndEffectiveIncomeTaxRateDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/Restructuring" xlink:href="car-20171231.xsd#Restructuring" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/RestructuringAdditionalInformationDetail" xlink:href="car-20171231.xsd#RestructuringAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/RestructuringRestructuringOtherRelatedChargesDetails" xlink:href="car-20171231.xsd#RestructuringRestructuringOtherRelatedChargesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/RestructuringTables" xlink:href="car-20171231.xsd#RestructuringTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfAccountsPayableAndOtherCurrentLiabilitiesDetail" xlink:href="car-20171231.xsd#ScheduleOfAccountsPayableAndOtherCurrentLiabilitiesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfAvailableFundingUnderVehicleProgramsDetail" xlink:href="car-20171231.xsd#ScheduleOfAvailableFundingUnderVehicleProgramsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfCarryingAmountsAndEstimatedFairValuesDetail" xlink:href="car-20171231.xsd#ScheduleOfCarryingAmountsAndEstimatedFairValuesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfCommittedCreditFacilitiesAdditionalInformationDetail" xlink:href="car-20171231.xsd#ScheduleOfCommittedCreditFacilitiesAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfCommittedCreditFacilitiesDetail" xlink:href="car-20171231.xsd#ScheduleOfCommittedCreditFacilitiesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfContractualMaturitiesDetail" xlink:href="car-20171231.xsd#ScheduleOfContractualMaturitiesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfDebtUnderVehicleProgramsDetail" xlink:href="car-20171231.xsd#ScheduleOfDebtUnderVehicleProgramsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfEffectOfDerivativesRecognizedDetail" xlink:href="car-20171231.xsd#ScheduleOfEffectOfDerivativesRecognizedDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfEstimatedUsefulLivesDetail" xlink:href="car-20171231.xsd#ScheduleOfEstimatedUsefulLivesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfGoodwillDetail" xlink:href="car-20171231.xsd#ScheduleOfGoodwillDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfIntangibleAssetsAmortizationExpenseDetail" xlink:href="car-20171231.xsd#ScheduleOfIntangibleAssetsAmortizationExpenseDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfIntangibleAssetsDetail" xlink:href="car-20171231.xsd#ScheduleOfIntangibleAssetsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfLongTermDebtDetail" xlink:href="car-20171231.xsd#ScheduleOfLongTermDebtDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfOtherCurrentAssetsDetail" xlink:href="car-20171231.xsd#ScheduleOfOtherCurrentAssetsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfPropertyAndEquipmentNetDetail" xlink:href="car-20171231.xsd#ScheduleOfPropertyAndEquipmentNetDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfRentExpenseDetail" xlink:href="car-20171231.xsd#ScheduleOfRentExpenseDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ScheduleOfSelectedQuarterlyFinancialDataDetail" xlink:href="car-20171231.xsd#ScheduleOfSelectedQuarterlyFinancialDataDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SegmentInformation" xlink:href="car-20171231.xsd#SegmentInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SegmentInformationTables" xlink:href="car-20171231.xsd#SegmentInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SelectedQuarterlyFinancialData" xlink:href="car-20171231.xsd#SelectedQuarterlyFinancialData" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SelectedQuarterlyFinancialDataTables" xlink:href="car-20171231.xsd#SelectedQuarterlyFinancialDataTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensation" xlink:href="car-20171231.xsd#StockBasedCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationAdditionalInformationDetail" xlink:href="car-20171231.xsd#StockBasedCompensationAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockOptionsAdditionalInformationDetail" xlink:href="car-20171231.xsd#StockBasedCompensationAnnualActivityOfStockOptionsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockOptionsDetail" xlink:href="car-20171231.xsd#StockBasedCompensationAnnualActivityOfStockOptionsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsAdditionalInformationDetail" xlink:href="car-20171231.xsd#StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsDetail" xlink:href="car-20171231.xsd#StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationStockUnitValuationAssumptionsDetail" xlink:href="car-20171231.xsd#StockBasedCompensationStockUnitValuationAssumptionsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockBasedCompensationTables" xlink:href="car-20171231.xsd#StockBasedCompensationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockholdersEquity" xlink:href="car-20171231.xsd#StockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockholdersEquityAdditionalInformationDetail" xlink:href="car-20171231.xsd#StockholdersEquityAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/StockholdersEquityTables" xlink:href="car-20171231.xsd#StockholdersEquityTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SubsequentEvents" xlink:href="car-20171231.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SubsequentEventsAdditionalInformationDetail" xlink:href="car-20171231.xsd#SubsequentEventsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfAssumptionsUsedToDeterminePensionObligationsAndPensionCostsDetail" xlink:href="car-20171231.xsd#SummaryOfAssumptionsUsedToDeterminePensionObligationsAndPensionCostsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfChangesToRestructuringRelatedLiabilitiesDetail" xlink:href="car-20171231.xsd#SummaryOfChangesToRestructuringRelatedLiabilitiesDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfDefinedBenefitPensionPlansAssetsFairValueDetail" xlink:href="car-20171231.xsd#SummaryOfDefinedBenefitPensionPlansAssetsFairValueDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfFundedStatusOfPensionPlansDetail" xlink:href="car-20171231.xsd#SummaryOfFundedStatusOfPensionPlansDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfGeographicSegmentInformationDetail" xlink:href="car-20171231.xsd#SummaryOfGeographicSegmentInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfNetPeriodicBenefitCostDetail" xlink:href="car-20171231.xsd#SummaryOfNetPeriodicBenefitCostDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSegmentsInformationDetail" xlink:href="car-20171231.xsd#SummaryOfSegmentsInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesAdditionalInformationDetail" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesCashFlowsReconciliation201618Tables" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesCashFlowsReconciliation201618Tables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesReconciliationOfCashAndCashEquivalentsAsu201618Tables" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesReconciliationOfCashAndCashEquivalentsAsu201618Tables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesRestrictedCashAdjustmentDetails" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesRestrictedCashAdjustmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="car-20171231.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/UnrecognizedTaxBenefitsAdditionalInformationDetail" xlink:href="car-20171231.xsd#UnrecognizedTaxBenefitsAdditionalInformationDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/UnrecognizedTaxBenefitsDetail" xlink:href="car-20171231.xsd#UnrecognizedTaxBenefitsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ValuationAndQualifyingAccounts" xlink:href="car-20171231.xsd#ValuationAndQualifyingAccounts" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/ValuationAndQualifyingAccountsDetail" xlink:href="car-20171231.xsd#ValuationAndQualifyingAccountsDetail" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/VehicleRentalActivities" xlink:href="car-20171231.xsd#VehicleRentalActivities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.avis.com/role/VehicleRentalActivitiesTables" xlink:href="car-20171231.xsd#VehicleRentalActivitiesTables" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <link:definitionLink xlink:role="http://www.avis.com/role/AccountsPayableAndOtherCurrentLiabilities" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/AccountsPayableAndOtherCurrentLiabilitiesAccountsPayableAndOtherCurrentLiabilitiesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/AccumulatedOtherComprehensiveIncomeDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_C01F3CB4DD6D9851B9108A5802A68E0C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_C01F3CB4DD6D9851B9108A5802A68E0C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_372441E99041484C6EDE8A5802A66D3F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_C01F3CB4DD6D9851B9108A5802A68E0C" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_372441E99041484C6EDE8A5802A66D3F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_D606E4AF301B861949738A5802A6E1EC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_372441E99041484C6EDE8A5802A66D3F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_D606E4AF301B861949738A5802A6E1EC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_D606E4AF301B861949738A5802A6E1EC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_372441E99041484C6EDE8A5802A66D3F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_D606E4AF301B861949738A5802A6E1EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_B12756BB74CEF9C8FD998A5802A6C619" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_D606E4AF301B861949738A5802A6E1EC" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_B12756BB74CEF9C8FD998A5802A6C619" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_780B5945EBBD5996ECAE8A5802A6164B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_C01F3CB4DD6D9851B9108A5802A68E0C" xlink:to="loc_us-gaap_HedgingDesignationAxis_780B5945EBBD5996ECAE8A5802A6164B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_4B47D7C5B54EF5CD871E8A5802A74FEC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_780B5945EBBD5996ECAE8A5802A6164B" xlink:to="loc_us-gaap_HedgingDesignationDomain_4B47D7C5B54EF5CD871E8A5802A74FEC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_4B47D7C5B54EF5CD871E8A5802A74FEC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_780B5945EBBD5996ECAE8A5802A6164B" xlink:to="loc_us-gaap_HedgingDesignationDomain_4B47D7C5B54EF5CD871E8A5802A74FEC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_24C02653390DBAC78C638A5802A7481B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_4B47D7C5B54EF5CD871E8A5802A74FEC" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_24C02653390DBAC78C638A5802A7481B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_386119F628BEFEDC8CCC8A5802A7BDFC" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_C01F3CB4DD6D9851B9108A5802A68E0C" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_386119F628BEFEDC8CCC8A5802A7BDFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_386119F628BEFEDC8CCC8A5802A7BDFC" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_386119F628BEFEDC8CCC8A5802A7BDFC" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_CorporateInterestExpenseMember" xlink:label="loc_car_CorporateInterestExpenseMember_13E9AC6A0BC56CEED8298A5802A79B02" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB" xlink:to="loc_car_CorporateInterestExpenseMember_13E9AC6A0BC56CEED8298A5802A79B02" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleInterestMember" xlink:label="loc_car_VehicleInterestMember_25BDBAF3EF8BAFA1BC9E8A5802A7D9E5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_3A70D25F0E1F44874B668A5802A701EB" xlink:to="loc_car_VehicleInterestMember_25BDBAF3EF8BAFA1BC9E8A5802A7D9E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TranslationAdjustmentForNetInvestmentHedgeNetOfTax" xlink:label="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeNetOfTax_367909167487E6AF87AA8AA64E65D35C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:to="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeNetOfTax_367909167487E6AF87AA8AA64E65D35C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_6B8D840C940ABEECBA938A5802A8EE2A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_6B8D840C940ABEECBA938A5802A8EE2A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_394D1F6F74AF2CD22C548A5802A8EAE4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_394D1F6F74AF2CD22C548A5802A8EAE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_7357EBE1309C55DB92F48A5802A86D99" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6814A2DB38FC3A8867598A5802A7CCB5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_7357EBE1309C55DB92F48A5802A86D99" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/Acquisitions" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/AcquisitionsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FFF432AC99EB1D8F69008F76BDC0420B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FFF432AC99EB1D8F69008F76BDC0420B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1653D47CC335D0E8D4D58F76BDC0AADA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FFF432AC99EB1D8F69008F76BDC0420B" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_1653D47CC335D0E8D4D58F76BDC0AADA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1653D47CC335D0E8D4D58F76BDC0AADA" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1653D47CC335D0E8D4D58F76BDC0AADA" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2017AvisandBudgetLicenseesMember" xlink:label="loc_car_A2017AvisandBudgetLicenseesMember_72D85BDD69B5B66AF2448F76BDC068C0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_A2017AvisandBudgetLicenseesMember_72D85BDD69B5B66AF2448F76BDC068C0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ACLHireLimitedMember" xlink:label="loc_car_ACLHireLimitedMember_3A63202DD7848D40BD3E8F76BDC08BC0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_ACLHireLimitedMember_3A63202DD7848D40BD3E8F76BDC08BC0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_MaggioreGroupMember" xlink:label="loc_car_MaggioreGroupMember_347CC21C8340B529CF378F76BDC01F1D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_MaggioreGroupMember_347CC21C8340B529CF378F76BDC01F1D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_BrazilMember" xlink:label="loc_car_BrazilMember_6A47097F49B4865271298F76BDC161D7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_BrazilMember_6A47097F49B4865271298F76BDC161D7" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FranceCarsMember" xlink:label="loc_car_FranceCarsMember_EC4F9343D4F29AC79B458F76BDC1EB8F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_FranceCarsMember_EC4F9343D4F29AC79B458F76BDC1EB8F" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AvisandBudgetLicenseesMember" xlink:label="loc_car_AvisandBudgetLicenseesMember_201616D51B8A3EC8FCB78F76BDC1F9B4" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_609B476F3208447B6C4B8F76BDC01949" xlink:to="loc_car_AvisandBudgetLicenseesMember_201616D51B8A3EC8FCB78F76BDC1F9B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D618BC71572DB4C260418F76BDC1BC8F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FFF432AC99EB1D8F69008F76BDC0420B" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D618BC71572DB4C260418F76BDC1BC8F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D618BC71572DB4C260418F76BDC1BC8F" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D618BC71572DB4C260418F76BDC1BC8F" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_FD1704F54E7A4DC1C8838F76BDC1A615" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_FD1704F54E7A4DC1C8838F76BDC1A615" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_74E894BF90EECE580FE68F76BDC15BE2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A" xlink:to="loc_us-gaap_CustomerRelationshipsMember_74E894BF90EECE580FE68F76BDC15BE2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LicensingAgreementsMember" xlink:label="loc_us-gaap_LicensingAgreementsMember_66A2EF4768E7B33747CD8F76BDC18F55" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ABDC74D883DEABDD3D38F76BDC1892A" xlink:to="loc_us-gaap_LicensingAgreementsMember_66A2EF4768E7B33747CD8F76BDC18F55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1" xlink:label="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_34F6A4A5A3E9DEA929698F76BDC162F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_34F6A4A5A3E9DEA929698F76BDC162F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_AE2317BA3101DDB923CB8F76BDC29776" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_AE2317BA3101DDB923CB8F76BDC29776" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredOther1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_00790522D828BBDC483C8F76BDC23E40" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_00790522D828BBDC483C8F76BDC23E40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_FE03F25995BF06D791DC8F76BDC2A6E3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_CommitmentsAndContingencies_FE03F25995BF06D791DC8F76BDC2A6E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6192992F44CC1A1C3C788F76BDC2FCD5" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6192992F44CC1A1C3C788F76BDC2FCD5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_7186D04E5FE0612F56B18F76BDC228C9" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_7186D04E5FE0612F56B18F76BDC228C9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_E74162B115CAA4BCDC3D8F76BDC24744" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_E74162B115CAA4BCDC3D8F76BDC24744" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_Transactionrelatedcostsnet" xlink:label="loc_car_Transactionrelatedcostsnet_71BC4053A879DF9232C98F76BDC27701" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_car_Transactionrelatedcostsnet_71BC4053A879DF9232C98F76BDC27701" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_D24E8AA2733E8D711DAB8F76BDC287D2" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_Goodwill_D24E8AA2733E8D711DAB8F76BDC287D2" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NonCashChargeOnUnfavorableLicenseRightsReacquiredWithAcquisitionWithSubsidiaries" xlink:label="loc_car_NonCashChargeOnUnfavorableLicenseRightsReacquiredWithAcquisitionWithSubsidiaries_28CE3E3AD08E901A1D5F8F76BDC26426" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_car_NonCashChargeOnUnfavorableLicenseRightsReacquiredWithAcquisitionWithSubsidiaries_28CE3E3AD08E901A1D5F8F76BDC26426" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_20A095B04B5A6987B6BE8F76BDC2286E" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_20A095B04B5A6987B6BE8F76BDC2286E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_CEFF08AB0806F3D7EC2F8F76BDC2791E" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_CEFF08AB0806F3D7EC2F8F76BDC2791E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_74F6E2A3624C2C174AF98F76BDC269DF" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_74F6E2A3624C2C174AF98F76BDC269DF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementLoss" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementLoss_7534BDA247F588C6B6428F76BDC3E58A" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6713D3E09EF7BF397EDB8F76BDC1A4EA" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementLoss_7534BDA247F588C6B6428F76BDC3E58A" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/AcquisitionsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/BasisOfPresentation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ChangesInUnrecognizedTaxBenefitsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/CommitmentsAndContingenciesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_ScheduleOfCommitmentsAndContingenciesLineItems" xlink:label="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_ScheduleOfCommitmentsAndContingenciesTable" xlink:label="loc_car_ScheduleOfCommitmentsAndContingenciesTable_079A2BEEB83C58F0AF7C76E5965149CB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_car_ScheduleOfCommitmentsAndContingenciesTable_079A2BEEB83C58F0AF7C76E5965149CB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_70BF70EEB4CF80925D2576E59651564E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesTable_079A2BEEB83C58F0AF7C76E5965149CB" xlink:to="loc_dei_LegalEntityAxis_70BF70EEB4CF80925D2576E59651564E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_70BF70EEB4CF80925D2576E59651564E" xlink:to="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_70BF70EEB4CF80925D2576E59651564E" xlink:to="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_RealogyCorporationMember" xlink:label="loc_car_RealogyCorporationMember_4F6B1B7465008566D49676E59651AA84" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A" xlink:to="loc_car_RealogyCorporationMember_4F6B1B7465008566D49676E59651AA84" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_WyndhamWorldwideCorporationMember" xlink:label="loc_car_WyndhamWorldwideCorporationMember_3BAC501AF3F9F6D156D476E59651658B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3C18C10D32A57B858EC876E59651601A" xlink:to="loc_car_WyndhamWorldwideCorporationMember_3BAC501AF3F9F6D156D476E59651658B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_971D5A8A6AE5FAC7709876E59651B6F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_971D5A8A6AE5FAC7709876E59651B6F7" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OperatingLeasesResidualValueOfLeasedAssets" xlink:label="loc_car_OperatingLeasesResidualValueOfLeasedAssets_4F3666D84156E1C36F9F76E59651C5D6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_car_OperatingLeasesResidualValueOfLeasedAssets_4F3666D84156E1C36F9F76E59651C5D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_94811A899F5B1B4D568676E59651AC44" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_94811A899F5B1B4D568676E59651AC44" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued" xlink:label="loc_us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued_8C6F5850F87B2ACC711F76E5965151CE" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued_8C6F5850F87B2ACC711F76E5965151CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_A51F473595BC6575428076E59651AF95" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_A51F473595BC6575428076E59651AF95" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligation" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligation_3500FAA40627E76CE41B76E596517738" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligation_3500FAA40627E76CE41B76E596517738" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherReceivables" xlink:label="loc_us-gaap_OtherReceivables_8CDB12ABBE1621954A2276E596510665" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_OtherReceivables_8CDB12ABBE1621954A2276E596510665" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="loc_us-gaap_AssetRetirementObligation_B9605DBC53D7A108490276E59651E65D" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_ScheduleOfCommitmentsAndContingenciesLineItems_2D05B0688E55309B76AE76E59651E415" xlink:to="loc_us-gaap_AssetRetirementObligation_B9605DBC53D7A108490276E59651E65D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/CommitmentsAndContingenciesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ComponentsOfCompanysVehiclesDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ComponentsOfVehicleDepreciationAndLeaseChargesDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_VehicleDepreciationAndLeaseChargesNetLineItems" xlink:label="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_InventoriesTable" xlink:label="loc_car_InventoriesTable_557402D2604C8C8FDFBA77932035C499" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_car_InventoriesTable_557402D2604C8C8FDFBA77932035C499" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRentalActivitiesAxis" xlink:label="loc_car_VehicleRentalActivitiesAxis_053A7B57A64EC0F7711B7793203599BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_InventoriesTable_557402D2604C8C8FDFBA77932035C499" xlink:to="loc_car_VehicleRentalActivitiesAxis_053A7B57A64EC0F7711B7793203599BE" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRentalActivitiesDomain" xlink:label="loc_car_VehicleRentalActivitiesDomain_5BE795B96943ABE27E58779320353B74_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_car_VehicleRentalActivitiesAxis_053A7B57A64EC0F7711B7793203599BE" xlink:to="loc_car_VehicleRentalActivitiesDomain_5BE795B96943ABE27E58779320353B74_default" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRentalActivitiesDomain" xlink:label="loc_car_VehicleRentalActivitiesDomain_5BE795B96943ABE27E58779320353B74" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_car_VehicleRentalActivitiesAxis_053A7B57A64EC0F7711B7793203599BE" xlink:to="loc_car_VehicleRentalActivitiesDomain_5BE795B96943ABE27E58779320353B74" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleDepreciationExpense" xlink:label="loc_car_VehicleDepreciationExpense_78B31C597E67053EB6C1779320352953" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_car_VehicleDepreciationExpense_78B31C597E67053EB6C1779320352953" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleLeaseCharges" xlink:label="loc_car_VehicleLeaseCharges_26DDD5C89FBDA95D58BB7793203503B7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_car_VehicleLeaseCharges_26DDD5C89FBDA95D58BB7793203503B7" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_GainLossOnSaleOfVehicles" xlink:label="loc_car_GainLossOnSaleOfVehicles_B2C16659ABDD86B4A118779320364596" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_car_GainLossOnSaleOfVehicles_B2C16659ABDD86B4A118779320364596" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleDepreciationAndLeaseChargesNet" xlink:label="loc_car_VehicleDepreciationAndLeaseChargesNet_8018BEF58DA28CFE7B3877932036F290" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_car_VehicleDepreciationAndLeaseChargesNet_8018BEF58DA28CFE7B3877932036F290" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableOtherCurrent" xlink:label="loc_us-gaap_AccountsPayableOtherCurrent_BBBC951D1AFBCE9D0F5177932036FE1E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_us-gaap_AccountsPayableOtherCurrent_BBBC951D1AFBCE9D0F5177932036FE1E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherReceivables" xlink:label="loc_us-gaap_OtherReceivables_E5457D0B86E050418269779320360739" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleDepreciationAndLeaseChargesNetLineItems_5453F87796E45A0ECBF47793203582E2" xlink:to="loc_us-gaap_OtherReceivables_E5457D0B86E050418269779320360739" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ComputationOfBasicAndDilutedEarningsPerShareDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedBalanceSheets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfOperations" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfStockholdersEquity" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_98FFCBF5C4E8F8E36F7E8A5805191301" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StatementTable_98FFCBF5C4E8F8E36F7E8A5805191301" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_8DB5B8E37B653F06DA008A58051956B2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_98FFCBF5C4E8F8E36F7E8A5805191301" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_8DB5B8E37B653F06DA008A58051956B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8DB5B8E37B653F06DA008A58051956B2" xlink:to="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8DB5B8E37B653F06DA008A58051956B2" xlink:to="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_B6CF4F9EA5EA2BA59CEC8A580519E175" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_B6CF4F9EA5EA2BA59CEC8A580519E175" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_EB3497081F72962BC9FB8A580519BBB4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:to="loc_us-gaap_TreasuryStockMember_EB3497081F72962BC9FB8A580519BBB4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_7EBAB6C0C281D2F535268A5805191789" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:to="loc_us-gaap_CommonStockMember_7EBAB6C0C281D2F535268A5805191789" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_D86B4099CF3F8E504EC68A58051A4029" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:to="loc_us-gaap_RetainedEarningsMember_D86B4099CF3F8E504EC68A58051A4029" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4123A8816345B14CB30F8A58051AC37D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_38BEF4BE9ACB1AFD76848A58051974A2" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4123A8816345B14CB30F8A58051AC37D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_4E71C9483D40C48068DE8A58051A48A6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_4E71C9483D40C48068DE8A58051A48A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_24A974A17E01837E4B728A58051A726A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_24A974A17E01837E4B728A58051A726A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_EF8B64AA9CE43692CDB78A58051AA156" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_EF8B64AA9CE43692CDB78A58051AA156" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_CABADA169D2FCB4530F58A58051A1394" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_CABADA169D2FCB4530F58A58051A1394" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_9650466B26B5ABEF79B28A58051A2C2C" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_9650466B26B5ABEF79B28A58051A2C2C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_CAE9A6DDA7DC6752A93C8A58051AAD18" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_CAE9A6DDA7DC6752A93C8A58051AAD18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_F476A5BEC13600628A588A58051A73BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_CAE9A6DDA7DC6752A93C8A58051AAD18" xlink:to="loc_us-gaap_ProfitLoss_F476A5BEC13600628A588A58051A73BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_F9AC1CAC9C71CF20ED018A58051ADD1F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_CAE9A6DDA7DC6752A93C8A58051AAD18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_F9AC1CAC9C71CF20ED018A58051ADD1F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_2F8CBA91ECCCCF2D1A898A58051B19CA" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_2F8CBA91ECCCCF2D1A898A58051B19CA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_88D22F45BB72022207578A58051B8263" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_88D22F45BB72022207578A58051B8263" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1E280311371F533424A78A58051B47E7" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1E280311371F533424A78A58051B47E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_45C583DDC61CBB9CE8388A58051BFFFE" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_45C583DDC61CBB9CE8388A58051BFFFE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable" xlink:label="loc_us-gaap_NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable_4A2DF2933BFE811731D68A58051BC5B3" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable_4A2DF2933BFE811731D68A58051BC5B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_B320BFC344B39495F0DF8A58051B3435" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_SharesIssued_B320BFC344B39495F0DF8A58051B3435" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_B4C91636B9530491FE448A58051BEA89" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_B4C91636B9530491FE448A58051BEA89" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_EE8E77205D6CAC3C4AB38A58051B434F" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_96DCCB5D4D3C3F91BB598A58051AB4E5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_EE8E77205D6CAC3C4AB38A58051B434F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatingCondensedBalanceSheetsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_1D7C58473C8D1BC4E896481A09AA6994" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_D7FCDA11AB1BF7D572CB481A09AA38AE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_1D7C58473C8D1BC4E896481A09AA6994" xlink:to="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_D7FCDA11AB1BF7D572CB481A09AA38AE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_BD8890F2A7BB22A4F8D0481A09AAB789" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_D7FCDA11AB1BF7D572CB481A09AA38AE" xlink:to="loc_dei_LegalEntityAxis_BD8890F2A7BB22A4F8D0481A09AAB789" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_79D76F2B23A3D4B6A45D481A09AABD75_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_BD8890F2A7BB22A4F8D0481A09AAB789" xlink:to="loc_dei_EntityDomain_79D76F2B23A3D4B6A45D481A09AABD75_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_79D76F2B23A3D4B6A45D481A09AABD75" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_BD8890F2A7BB22A4F8D0481A09AAB789" xlink:to="loc_dei_EntityDomain_79D76F2B23A3D4B6A45D481A09AABD75" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EliminationsMember" xlink:label="loc_car_EliminationsMember_84AA8B9BD1F32ECF818B481A09AA6C3B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_79D76F2B23A3D4B6A45D481A09AABD75" xlink:to="loc_car_EliminationsMember_84AA8B9BD1F32ECF818B481A09AA6C3B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesAxis" xlink:label="loc_us-gaap_ConsolidatedEntitiesAxis_7D728798AD060D14A4A2481DCC27597E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_D7FCDA11AB1BF7D572CB481A09AA38AE" xlink:to="loc_us-gaap_ConsolidatedEntitiesAxis_7D728798AD060D14A4A2481DCC27597E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_7D728798AD060D14A4A2481DCC27597E" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_7D728798AD060D14A4A2481DCC27597E" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_8A56A44F7339CC9D836C481A09AA3902" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:to="loc_us-gaap_ParentCompanyMember_8A56A44F7339CC9D836C481A09AA3902" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="loc_us-gaap_SubsidiariesMember_8E6EED4D0DF3CE619A9C481A09AAD6AA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:to="loc_us-gaap_SubsidiariesMember_8E6EED4D0DF3CE619A9C481A09AAD6AA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_D89D72C291522F2BB628481A09AA9F3C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:to="loc_us-gaap_GuarantorSubsidiariesMember_D89D72C291522F2BB628481A09AA9F3C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_10A1A65873563C47D757481A09AA1D40" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_FAB3CA160143DDF4DE39481DCC27EEE7" xlink:to="loc_us-gaap_NonGuarantorSubsidiariesMember_10A1A65873563C47D757481A09AA1D40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_1D7C58473C8D1BC4E896481A09AA6994" xlink:to="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_F932C8109CE075781589481A09AA85E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_F932C8109CE075781589481A09AA85E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_79C6F38F92C5C2E6480A481A09AA5236" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:to="loc_us-gaap_ReceivablesNetCurrent_79C6F38F92C5C2E6480A481A09AA5236" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_FC10F2032AF1983C1D22481A09AA9407" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:to="loc_us-gaap_OtherAssetsCurrent_FC10F2032AF1983C1D22481A09AA9407" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_23D537B7BFE30774A7AD481A09AAAB7C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_E53623981523F97C7A19481A09AA8C2A" xlink:to="loc_us-gaap_AssetsCurrent_23D537B7BFE30774A7AD481A09AAAB7C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_CC184609920AF2F02299481A09AA2123" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_CC184609920AF2F02299481A09AA2123" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_866F862E6BFA1F470077481A09AA4BE7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_866F862E6BFA1F470077481A09AA4BE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_B11F5981CE52346B2B57481A09AA65C9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_Goodwill_B11F5981CE52346B2B57481A09AA65C9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_32428430C7B95D3220CB481A09AA3810" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_32428430C7B95D3220CB481A09AA3810" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_FD82E6D93FBC20AE7D70481A09AAF865" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_FD82E6D93FBC20AE7D70481A09AAF865" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_IntercompanyReceivablesPayables" xlink:label="loc_car_IntercompanyReceivablesPayables_1446A74E5D214270A868481A09AA3B58" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_car_IntercompanyReceivablesPayables_1446A74E5D214270A868481A09AA3B58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_5220760AE3D73E2F89B0481A09AA868D" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_EquityMethodInvestments_5220760AE3D73E2F89B0481A09AA868D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_TotalAssetsExclusiveOfAssetsUnderVehiclePrograms" xlink:label="loc_car_TotalAssetsExclusiveOfAssetsUnderVehiclePrograms_B38317C3A04062C94063481A09AAD23A" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_car_TotalAssetsExclusiveOfAssetsUnderVehiclePrograms_B38317C3A04062C94063481A09AAD23A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AssetsUnderVehicleProgramsAbstract" xlink:label="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProgramCash" xlink:label="loc_car_ProgramCash_E5C01276A1B1103CEAB1481A09AAF5FD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:to="loc_car_ProgramCash_E5C01276A1B1103CEAB1481A09AAF5FD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehiclesNet" xlink:label="loc_car_VehiclesNet_EBBFDA5319C6E3A9D91E481A09AAAFB3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:to="loc_car_VehiclesNet_EBBFDA5319C6E3A9D91E481A09AAAFB3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ReceivablesFromVehicleManufacturersAndOther" xlink:label="loc_car_ReceivablesFromVehicleManufacturersAndOther_A65F1CDBDC80DC757740481A09AA1182" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:to="loc_car_ReceivablesFromVehicleManufacturersAndOther_A65F1CDBDC80DC757740481A09AA1182" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InvestmentInRelatedParty" xlink:label="loc_car_InvestmentInRelatedParty_FEFE2C1EA5574D22BA54481A09AAE168" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:to="loc_car_InvestmentInRelatedParty_FEFE2C1EA5574D22BA54481A09AAE168" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AssetsUnderVehiclePrograms" xlink:label="loc_car_AssetsUnderVehiclePrograms_DD6A7565F0C5CB6B3137481A09AA4403" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_AssetsUnderVehicleProgramsAbstract_3DB471201FB194B7600E481A09AAAEFA" xlink:to="loc_car_AssetsUnderVehiclePrograms_DD6A7565F0C5CB6B3137481A09AA4403" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_4222325FFD737089B7B1481A09AAE010" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7F0B79261E1635D4B386481A09AAF70A" xlink:to="loc_us-gaap_Assets_4222325FFD737089B7B1481A09AAE010" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_1D7C58473C8D1BC4E896481A09AA6994" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_5CCD99C18174F6526251481A09AA99BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_5CCD99C18174F6526251481A09AA99BE" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ShortTermDebtAndCurrentPortionOfLongTermDebt" xlink:label="loc_car_ShortTermDebtAndCurrentPortionOfLongTermDebt_793BF04CECACF85DB998481A09AAB1D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5CCD99C18174F6526251481A09AA99BE" xlink:to="loc_car_ShortTermDebtAndCurrentPortionOfLongTermDebt_793BF04CECACF85DB998481A09AAB1D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_ED49FFDD4569F5DB3F35481A09AACE3E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5CCD99C18174F6526251481A09AA99BE" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_ED49FFDD4569F5DB3F35481A09AACE3E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_83DEAD8CE1F1CD853271481A09AA03DD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5CCD99C18174F6526251481A09AA99BE" xlink:to="loc_us-gaap_LiabilitiesCurrent_83DEAD8CE1F1CD853271481A09AA03DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_D02DD7F36088529AD312481A09AA1706" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_D02DD7F36088529AD312481A09AA1706" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueToRelatedPartiesNoncurrent" xlink:label="loc_us-gaap_DueToRelatedPartiesNoncurrent_A2E612B4CEA20AA6BA8D481A09AAC93F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_DueToRelatedPartiesNoncurrent_A2E612B4CEA20AA6BA8D481A09AAC93F" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredIncomeTaxes" xlink:label="loc_car_DeferredIncomeTaxes_8EEA0ED67B278F631F26481A09AAC5CD" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_car_DeferredIncomeTaxes_8EEA0ED67B278F631F26481A09AAC5CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_105D07D017D0A87511C5481A09AA0267" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_105D07D017D0A87511C5481A09AA0267" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_TotalLiabilitiesExclusiveOfLiabilitiesUnderVehiclePrograms" xlink:label="loc_car_TotalLiabilitiesExclusiveOfLiabilitiesUnderVehiclePrograms_2C5554BD49224EDADD58481A09AAD2F1" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_car_TotalLiabilitiesExclusiveOfLiabilitiesUnderVehiclePrograms_2C5554BD49224EDADD58481A09AAD2F1" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_LiabilitiesUnderVehicleProgramAbstract" xlink:label="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_Debt" xlink:label="loc_car_Debt_F309DA079F4C8078CEE1481A09AAD74D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:to="loc_car_Debt_F309DA079F4C8078CEE1481A09AAD74D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtDueToRelatedParty" xlink:label="loc_car_DebtDueToRelatedParty_DA5E975DC84CB9F83B4F481A09AAA6CC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:to="loc_car_DebtDueToRelatedParty_DA5E975DC84CB9F83B4F481A09AAA6CC" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherLiabilitiesUnderVehiclePrograms" xlink:label="loc_car_OtherLiabilitiesUnderVehiclePrograms_F337B203EE4C93616160481A09AAC258" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:to="loc_car_OtherLiabilitiesUnderVehiclePrograms_F337B203EE4C93616160481A09AAC258" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_LiabilitiesUnderVehiclePrograms" xlink:label="loc_car_LiabilitiesUnderVehiclePrograms_F5D0BD3024A927783C72481A09AAD1D5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_LiabilitiesUnderVehicleProgramAbstract_09D1DF2B9A533C69DE9C481A09AA2B3E" xlink:to="loc_car_LiabilitiesUnderVehiclePrograms_F5D0BD3024A927783C72481A09AAD1D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_BC58B6964EFB2659EE1D481A09AAF17E" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_BC58B6964EFB2659EE1D481A09AAF17E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_A5224CE88C81EF017A65481A09AAB0B3" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_04B1DD74C1E2AB748E50481A09AA1342" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_A5224CE88C81EF017A65481A09AAB0B3" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatingCondensedStatementsOfCashFlowsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_89BF057646D6C140071577BEC3D84BE6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_89BF057646D6C140071577BEC3D84BE6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_2CBC4D1946964F020A9077BEC3D80F5C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_89BF057646D6C140071577BEC3D84BE6" xlink:to="loc_dei_LegalEntityAxis_2CBC4D1946964F020A9077BEC3D80F5C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_27CEDEE4443643AC772277BEC3D808D2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_2CBC4D1946964F020A9077BEC3D80F5C" xlink:to="loc_dei_EntityDomain_27CEDEE4443643AC772277BEC3D808D2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_27CEDEE4443643AC772277BEC3D808D2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_2CBC4D1946964F020A9077BEC3D80F5C" xlink:to="loc_dei_EntityDomain_27CEDEE4443643AC772277BEC3D808D2" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EliminationsMember" xlink:label="loc_car_EliminationsMember_7CAA1981474EC43914B777BEC3D80E0C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_27CEDEE4443643AC772277BEC3D808D2" xlink:to="loc_car_EliminationsMember_7CAA1981474EC43914B777BEC3D80E0C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesAxis" xlink:label="loc_us-gaap_ConsolidatedEntitiesAxis_77E9ED814F42570D515E77BEC3D8E56B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_89BF057646D6C140071577BEC3D84BE6" xlink:to="loc_us-gaap_ConsolidatedEntitiesAxis_77E9ED814F42570D515E77BEC3D8E56B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_77E9ED814F42570D515E77BEC3D8E56B" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_77E9ED814F42570D515E77BEC3D8E56B" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_E77A80EF9AFE0E8EBD0377BEC3D83231" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:to="loc_us-gaap_ParentCompanyMember_E77A80EF9AFE0E8EBD0377BEC3D83231" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="loc_us-gaap_SubsidiariesMember_3D7FDD9E243AAB6F9BEA77BEC3D897F7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:to="loc_us-gaap_SubsidiariesMember_3D7FDD9E243AAB6F9BEA77BEC3D897F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_F8580EE533DE58EA298377BEC3D82FBD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:to="loc_us-gaap_GuarantorSubsidiariesMember_F8580EE533DE58EA298377BEC3D82FBD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_844D61F367863CC77C6277BEC3D8846E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_B99FE6274B0328D21D2877BEC3D8F6A0" xlink:to="loc_us-gaap_NonGuarantorSubsidiariesMember_844D61F367863CC77C6277BEC3D8846E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_898865B603F8670AFDDD77C8D7B92B21" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_898865B603F8670AFDDD77C8D7B92B21" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C51831AE7E65C3FFE0DE77BEC3D85147" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C51831AE7E65C3FFE0DE77BEC3D85147" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_PropertyAndEquipmentAdditions" xlink:label="loc_car_PropertyAndEquipmentAdditions_E6FF249DA166BF56A60377BEC3D80A8D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_car_PropertyAndEquipmentAdditions_E6FF249DA166BF56A60377BEC3D80A8D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_E091CD7F5710669C0C6377BEC3D8263C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_E091CD7F5710669C0C6377BEC3D8263C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_6C938DB41325CB6A6B0577BEC3D83106" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_6C938DB41325CB6A6B0577BEC3D83106" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt_65A0195EFDD70EF2C66477BEC3D8EB41" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt_65A0195EFDD70EF2C66477BEC3D8EB41" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_B167F6216AD17746EA8677BEC3D8180E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_B167F6216AD17746EA8677BEC3D8180E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms" xlink:label="loc_car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms_4F5276AC54580DA5E06477BEC3D8F67D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms_4F5276AC54580DA5E06477BEC3D8F67D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsInvestingActivitiesAbstract" xlink:label="loc_car_VehicleProgramsInvestingActivitiesAbstract_2276A63E796BB9F0613177BEC3D8688F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_car_VehicleProgramsInvestingActivitiesAbstract_2276A63E796BB9F0613177BEC3D8688F" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DecreaseIncreaseInProgramCash" xlink:label="loc_car_DecreaseIncreaseInProgramCash_82B6EB826D8F1CF7744977BEC3D8D459" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsInvestingActivitiesAbstract_2276A63E796BB9F0613177BEC3D8688F" xlink:to="loc_car_DecreaseIncreaseInProgramCash_82B6EB826D8F1CF7744977BEC3D8D459" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InvestmentInVehicles" xlink:label="loc_car_InvestmentInVehicles_8FC2FC90947CA7BF73A877BEC3D85A12" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsInvestingActivitiesAbstract_2276A63E796BB9F0613177BEC3D8688F" xlink:to="loc_car_InvestmentInVehicles_8FC2FC90947CA7BF73A877BEC3D85A12" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProceedsReceivedOnDispositionOfVehicles" xlink:label="loc_car_ProceedsReceivedOnDispositionOfVehicles_41328AF4DC670A923E1C77BEC3D8FE51" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsInvestingActivitiesAbstract_2276A63E796BB9F0613177BEC3D8688F" xlink:to="loc_car_ProceedsReceivedOnDispositionOfVehicles_41328AF4DC670A923E1C77BEC3D8FE51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfRelatedPartyDebt" xlink:label="loc_us-gaap_RepaymentsOfRelatedPartyDebt_5593DA7A390CDB55EF1D77BEC3D8FC97" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_RepaymentsOfRelatedPartyDebt_5593DA7A390CDB55EF1D77BEC3D8FC97" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NetCashUsedInInvestingActivitiesOfVehiclePrograms" xlink:label="loc_car_NetCashUsedInInvestingActivitiesOfVehiclePrograms_BDD39AEE8904E9A7AFFD77BEC3D8DE10" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_car_NetCashUsedInInvestingActivitiesOfVehiclePrograms_BDD39AEE8904E9A7AFFD77BEC3D8DE10" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_DE8FD3F4CB9EAE75D38577BEC3D891D9" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_F0122D065E5961C9D6D077BEC3D80C5C" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_DE8FD3F4CB9EAE75D38577BEC3D891D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProceedsFromLongTermBorrowings" xlink:label="loc_car_ProceedsFromLongTermBorrowings_3C2FD5B258FBC7487C4A77BEC3D87F18" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_car_ProceedsFromLongTermBorrowings_3C2FD5B258FBC7487C4A77BEC3D87F18" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_PrincipalPaymentsOnLongTermBorrowings" xlink:label="loc_car_PrincipalPaymentsOnLongTermBorrowings_92C817ACB13E93F1454877BEC3D8BCAC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_car_PrincipalPaymentsOnLongTermBorrowings_92C817ACB13E93F1454877BEC3D8BCAC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_83EBB406B0F51B8A07C277BEC3D8A712" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_83EBB406B0F51B8A07C277BEC3D8A712" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_883E8BD3D0DD608D99DD77BEC3D89D9A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_883E8BD3D0DD608D99DD77BEC3D89D9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_4050B463495DE94774FB77BEC3D8827E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_4050B463495DE94774FB77BEC3D8827E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_Intercompanyloanborrowings" xlink:label="loc_car_Intercompanyloanborrowings_64A5FA64AA43A4B33B0377BEC3D8571A" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_car_Intercompanyloanborrowings_64A5FA64AA43A4B33B0377BEC3D8571A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_D964BED1C88DFECBFFBB77BEC3D8A791" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_D964BED1C88DFECBFFBB77BEC3D8A791" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms" xlink:label="loc_car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms_D7499B63EE0F14C9B1FF77BEC3D8868A" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms_D7499B63EE0F14C9B1FF77BEC3D8868A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsFinancingActivitiesAbstract" xlink:label="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms" xlink:label="loc_car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms_1A73C15C08ECEA51AD3177BEC3D801B7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:to="loc_car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms_1A73C15C08ECEA51AD3177BEC3D801B7" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms" xlink:label="loc_car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms_52639AE53D224E91EFC977BEC3D84970" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:to="loc_car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms_52639AE53D224E91EFC977BEC3D84970" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsPaymentsOfFinancingCosts" xlink:label="loc_car_VehicleProgramsPaymentsOfFinancingCosts_A5245D60922CC4CDF62C77BEC3D8639B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:to="loc_car_VehicleProgramsPaymentsOfFinancingCosts_A5245D60922CC4CDF62C77BEC3D8639B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms" xlink:label="loc_car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms_44CD1F77B9A164767EEE77BEC3D8F2D9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleProgramsFinancingActivitiesAbstract_B492052554A3C2E7D9B977BEC3D820E0" xlink:to="loc_car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms_44CD1F77B9A164767EEE77BEC3D8F2D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_56FDA2D8C0ACF8A17B2277BEC3D8142E" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3DE9CF7BFAA339F01C1277BEC3D8FE7E" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_56FDA2D8C0ACF8A17B2277BEC3D8142E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_AFE869DBF04F180AABFC77BEC3D820EA" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_AFE869DBF04F180AABFC77BEC3D820EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_001DB0C94BAAE52FFA3377C9F3D3BF10" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_7BE96E7F48769E360AD877BEC3D8814A" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_001DB0C94BAAE52FFA3377C9F3D3BF10" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ConsolidatingCondensedStatementsOfOperationsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_EF35CD27BFB7860834C77B001441CD88" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_EF35CD27BFB7860834C77B001441CD88" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_B0071088F27CA771CBA17B0014419A67" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_EF35CD27BFB7860834C77B001441CD88" xlink:to="loc_us-gaap_StatementScenarioAxis_B0071088F27CA771CBA17B0014419A67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_B0071088F27CA771CBA17B0014419A67" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_B0071088F27CA771CBA17B0014419A67" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="loc_us-gaap_RestatementAdjustmentMember_82C2A9EE72ACAC8F392E7B00144174D5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639" xlink:to="loc_us-gaap_RestatementAdjustmentMember_82C2A9EE72ACAC8F392E7B00144174D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember_F436D2F6AAE6B21122727B0014414947" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_3C1728AF023472CF497D7B0014414639" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember_F436D2F6AAE6B21122727B0014414947" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_873AAA03C537484547CA7B0014416288" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_EF35CD27BFB7860834C77B001441CD88" xlink:to="loc_dei_LegalEntityAxis_873AAA03C537484547CA7B0014416288" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_301B97E24FA930F2D2137B0014413E86_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_873AAA03C537484547CA7B0014416288" xlink:to="loc_dei_EntityDomain_301B97E24FA930F2D2137B0014413E86_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_301B97E24FA930F2D2137B0014413E86" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_873AAA03C537484547CA7B0014416288" xlink:to="loc_dei_EntityDomain_301B97E24FA930F2D2137B0014413E86" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EliminationsMember" xlink:label="loc_car_EliminationsMember_541E52AF17B7F92E81E07B0014419F0C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_301B97E24FA930F2D2137B0014413E86" xlink:to="loc_car_EliminationsMember_541E52AF17B7F92E81E07B0014419F0C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesAxis" xlink:label="loc_us-gaap_ConsolidatedEntitiesAxis_BEABE314CEA531770DA27B0014410842" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_EF35CD27BFB7860834C77B001441CD88" xlink:to="loc_us-gaap_ConsolidatedEntitiesAxis_BEABE314CEA531770DA27B0014410842" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_BEABE314CEA531770DA27B0014410842" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_BEABE314CEA531770DA27B0014410842" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_DEC852913A5C7B7588687B001441421A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:to="loc_us-gaap_ParentCompanyMember_DEC852913A5C7B7588687B001441421A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="loc_us-gaap_SubsidiariesMember_9774539D1C0651D42B7E7B00144107D6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:to="loc_us-gaap_SubsidiariesMember_9774539D1C0651D42B7E7B00144107D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_E93BF813144AF90981B07B0014417371" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:to="loc_us-gaap_GuarantorSubsidiariesMember_E93BF813144AF90981B07B0014417371" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_E2C6E81F93B93439A4FC7B0014417531" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_D5EFD500D96FC3F802AA7B001441A9CB" xlink:to="loc_us-gaap_NonGuarantorSubsidiariesMember_E2C6E81F93B93439A4FC7B0014417531" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DecreaseIncreaseInProgramCash" xlink:label="loc_car_DecreaseIncreaseInProgramCash_7EF32E90249321B0D7A87B001441A0C8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_DecreaseIncreaseInProgramCash_7EF32E90249321B0D7A87B001441A0C8" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRental" xlink:label="loc_car_VehicleRental_A09F92CCD8A0DB4FE58C7B001441197A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_VehicleRental_A09F92CCD8A0DB4FE58C7B001441197A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherRevenue" xlink:label="loc_car_OtherRevenue_7C681D804A21D8762C567B001441BE8F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_OtherRevenue_7C681D804A21D8762C567B001441BE8F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_18A480C83AF601EE483A7B0014419216" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_SalesRevenueServicesNet_18A480C83AF601EE483A7B0014419216" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_C3ADA8C7696078B187E77B001441D6C5" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_C3ADA8C7696078B187E77B001441D6C5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfServicesDepreciation" xlink:label="loc_us-gaap_CostOfServicesDepreciation_ABEE847B7DD97C4C6A9C7B0014414280" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_CostOfServicesDepreciation_ABEE847B7DD97C4C6A9C7B0014414280" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_A26229E7956CCE75369C7B0014413896" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_A26229E7956CCE75369C7B0014413896" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleInterestNet" xlink:label="loc_car_VehicleInterestNet_B0D25CCA931BF8ECCCEF7B0014415497" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_VehicleInterestNet_B0D25CCA931BF8ECCCEF7B0014415497" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NonVehicleRelatedDepreciationAndAmortization" xlink:label="loc_car_NonVehicleRelatedDepreciationAndAmortization_111D30DC60A914395B407B001441275C" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_NonVehicleRelatedDepreciationAndAmortization_111D30DC60A914395B407B001441275C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_22ECCCF29233A9C950847B001441AD2E" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_InterestExpense_22ECCCF29233A9C950847B001441AD2E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_IntercompanyInterestExpenseIncome" xlink:label="loc_car_IntercompanyInterestExpenseIncome_7BFBF9A19751A4BE6DAE7B001441A9A0" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_IntercompanyInterestExpenseIncome_7BFBF9A19751A4BE6DAE7B001441A9A0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EarlyDebtExtinguishment" xlink:label="loc_car_EarlyDebtExtinguishment_F268DF9460C088CB54897B0014417C17" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_EarlyDebtExtinguishment_F268DF9460C088CB54897B0014417C17" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_Transactionrelatedcostsnet" xlink:label="loc_car_Transactionrelatedcostsnet_0675DC2C156C0943762A7B0014414EE4" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_Transactionrelatedcostsnet_0675DC2C156C0943762A7B0014414EE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="loc_us-gaap_RestructuringCharges_6856876B73B7341E2ED47B0014419ECF" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_RestructuringCharges_6856876B73B7341E2ED47B0014419ECF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_3898FDD972D5C74BDF627B001441B3D1" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_3898FDD972D5C74BDF627B001441B3D1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_B90EABB7AAE4B6B47CED7B0014419E72" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_CostsAndExpenses_B90EABB7AAE4B6B47CED7B0014419E72" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_D4ED9D027D23C53968E97B0014412417" xlink:type="locator" />
    <link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_D4ED9D027D23C53968E97B0014412417" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_771F50E16F740A67C27D7B001441CE25" xlink:type="locator" />
    <link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_771F50E16F740A67C27D7B001441CE25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_4FD007D2C6A17D98E0487B0014417503" xlink:type="locator" />
    <link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_4FD007D2C6A17D98E0487B0014417503" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_049518306BE2260FFB447B001441BEC1" xlink:type="locator" />
    <link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_ProfitLoss_049518306BE2260FFB447B001441BEC1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_2E674F0830A83DC03F2B7B00144104CF" xlink:type="locator" />
    <link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_2E674F0830A83DC03F2B7B00144104CF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_676845874052B14B324C7B001441E6EE" xlink:type="locator" />
    <link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_676845874052B14B324C7B001441E6EE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_10A25CB3B3E5C5136C757B00144103BC" xlink:type="locator" />
    <link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_10A25CB3B3E5C5136C757B00144103BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_82AC897398A7EF05CE137B001441A9AB" xlink:type="locator" />
    <link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_82AC897398A7EF05CE137B001441A9AB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_96E44EDE7EC8045749F97B0014411F08" xlink:type="locator" />
    <link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_96E44EDE7EC8045749F97B0014411F08" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProgramCash" xlink:label="loc_car_ProgramCash_A9864BB05BEE95D888757B0014413DBC" xlink:type="locator" />
    <link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_car_ProgramCash_A9864BB05BEE95D888757B0014413DBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_66E05324685632DB11597B00144171BC" xlink:type="locator" />
    <link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_66E05324685632DB11597B00144171BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD99FC9D76F1A6D79F927B001441AA4A" xlink:type="locator" />
    <link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_BC6211B4031B9BFDFCC97B0014419735" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD99FC9D76F1A6D79F927B001441AA4A" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ContractualMaturitiesOfCompanysCorporateDebtDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangementsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_35F9F862A4F281ADE5ED7B87BF900BB7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_35F9F862A4F281ADE5ED7B87BF900BB7" xlink:to="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_FEB91AE46BAAED3E35B07B87BF90CCCE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_FEB91AE46BAAED3E35B07B87BF90CCCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ECA0E21F9FDCF0FAC48D7B87BF900097_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_FEB91AE46BAAED3E35B07B87BF90CCCE" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ECA0E21F9FDCF0FAC48D7B87BF900097_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ECA0E21F9FDCF0FAC48D7B87BF900097" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_FEB91AE46BAAED3E35B07B87BF90CCCE" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ECA0E21F9FDCF0FAC48D7B87BF900097" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EuropeanRentalFleetSecuritizationMember" xlink:label="loc_car_EuropeanRentalFleetSecuritizationMember_7EF3FBD0D865BD276C097B87BF907E47" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_ECA0E21F9FDCF0FAC48D7B87BF900097" xlink:to="loc_car_EuropeanRentalFleetSecuritizationMember_7EF3FBD0D865BD276C097B87BF907E47" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_29716EB1E929135A15817B87BF906729" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:to="loc_us-gaap_DebtInstrumentAxis_29716EB1E929135A15817B87BF906729" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_CFEE94CA201E6BB500117B87BF905A15_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_29716EB1E929135A15817B87BF906729" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_CFEE94CA201E6BB500117B87BF905A15_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_CFEE94CA201E6BB500117B87BF905A15" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_29716EB1E929135A15817B87BF906729" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_CFEE94CA201E6BB500117B87BF905A15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_8FBC0661AF32DDC09ADB7B87BF9049B3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:to="loc_us-gaap_VariableRateAxis_8FBC0661AF32DDC09ADB7B87BF9049B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_B1CFCBB4B64B5CB6701F7B87BF901A05_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_8FBC0661AF32DDC09ADB7B87BF9049B3" xlink:to="loc_us-gaap_VariableRateDomain_B1CFCBB4B64B5CB6701F7B87BF901A05_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_B1CFCBB4B64B5CB6701F7B87BF901A05" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_8FBC0661AF32DDC09ADB7B87BF9049B3" xlink:to="loc_us-gaap_VariableRateDomain_B1CFCBB4B64B5CB6701F7B87BF901A05" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E8A6DD2E537BFFA717E47B87BF903D14" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E8A6DD2E537BFFA717E47B87BF903D14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_C8EBE959DE8075A627917B87BF902AF1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E8A6DD2E537BFFA717E47B87BF903D14" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_C8EBE959DE8075A627917B87BF902AF1_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_C8EBE959DE8075A627917B87BF902AF1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E8A6DD2E537BFFA717E47B87BF903D14" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_C8EBE959DE8075A627917B87BF902AF1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_B222BE531AA5185621657B87BF90D49E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_DE3AF5B5BADD15B958797B87BF9024A7" xlink:to="loc_us-gaap_RangeAxis_B222BE531AA5185621657B87BF90D49E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_C11E0C8D855FD03ED47B7B87BF90BE70_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_B222BE531AA5185621657B87BF90D49E" xlink:to="loc_us-gaap_RangeMember_C11E0C8D855FD03ED47B7B87BF90BE70_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_C11E0C8D855FD03ED47B7B87BF90BE70" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_B222BE531AA5185621657B87BF90D49E" xlink:to="loc_us-gaap_RangeMember_C11E0C8D855FD03ED47B7B87BF90BE70" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NewlyIssuedEuropeanCreditFacility" xlink:label="loc_car_NewlyIssuedEuropeanCreditFacility_A2A0316E5F6B1217437E7B87BF906A5F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_35F9F862A4F281ADE5ED7B87BF900BB7" xlink:to="loc_car_NewlyIssuedEuropeanCreditFacility_A2A0316E5F6B1217437E7B87BF906A5F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/DebtUnderVehicleProgramsAndBorrowingArrangementsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/DeferredIncomeTaxAssetsAndLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems" xlink:label="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredIncomeTaxAssetsAndLiabilitiesTable" xlink:label="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesTable_51CF63E375A7AE118A13481A0A689C6F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesTable_51CF63E375A7AE118A13481A0A689C6F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_0F2F7805527D611ABCB5481A0A6872E4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesTable_51CF63E375A7AE118A13481A0A689C6F" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_0F2F7805527D611ABCB5481A0A6872E4" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_2185308EB0A60A69FE90481A0A68F3E3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_0F2F7805527D611ABCB5481A0A6872E4" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_2185308EB0A60A69FE90481A0A68F3E3_default" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_2185308EB0A60A69FE90481A0A68F3E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_0F2F7805527D611ABCB5481A0A6872E4" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_2185308EB0A60A69FE90481A0A68F3E3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsMember" xlink:label="loc_car_VehicleProgramsMember_62A6C4F44D819E0D4792481A0A687C54" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_2185308EB0A60A69FE90481A0A68F3E3" xlink:to="loc_car_VehicleProgramsMember_62A6C4F44D819E0D4792481A0A687C54" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_BD7044D8FE207EF8BE87481A0A68AEDD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_BD7044D8FE207EF8BE87481A0A68AEDD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxAssetsAccruedLiabilitiesAndDeferredIncomeNonCurrent" xlink:label="loc_car_DeferredTaxAssetsAccruedLiabilitiesAndDeferredIncomeNonCurrent_CF50107EA9FA1F612BE9481A0A6889B9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxAssetsAccruedLiabilitiesAndDeferredIncomeNonCurrent_CF50107EA9FA1F612BE9481A0A6889B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_576E400F88B8F9C89585481A0A682AF1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_576E400F88B8F9C89585481A0A682AF1" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxAssetsDepreciationAndAmortizationNonCurrent" xlink:label="loc_car_DeferredTaxAssetsDepreciationAndAmortizationNonCurrent_CA9AF70518BDA50673BD481A0A689450" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxAssetsDepreciationAndAmortizationNonCurrent_CA9AF70518BDA50673BD481A0A689450" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxAssetsAcquisitionAndIntegrationRelatedLiabilitiesNonCurrent" xlink:label="loc_car_DeferredTaxAssetsAcquisitionAndIntegrationRelatedLiabilitiesNonCurrent_D600E85104A555BA43C6481A0A68E42A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxAssetsAcquisitionAndIntegrationRelatedLiabilitiesNonCurrent_D600E85104A555BA43C6481A0A68E42A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_7F69B084E57B0FC41C5F481A0A68D21B" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_7F69B084E57B0FC41C5F481A0A68D21B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_298B2BFC2976BCF37D93481A0A686048" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_298B2BFC2976BCF37D93481A0A686048" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent_DFAE81A55A60F22646D5481A0A684DA1" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent_DFAE81A55A60F22646D5481A0A684DA1" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxAssetsNoncurrent" xlink:label="loc_car_DeferredTaxAssetsNoncurrent_3EF34130EA4B84BA9EE5481A0A6802D9" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxAssetsNoncurrent_3EF34130EA4B84BA9EE5481A0A6802D9" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxLiabilitiesDepreciationAndAmortizationNonCurrent" xlink:label="loc_car_DeferredTaxLiabilitiesDepreciationAndAmortizationNonCurrent_BF80D5BF06ADAEDAF732481A0A684B95" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxLiabilitiesDepreciationAndAmortizationNonCurrent_BF80D5BF06ADAEDAF732481A0A684B95" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_F3DE734393106E587013481A0A682EA9" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_F3DE734393106E587013481A0A682EA9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_7E9910EA9B92D1D4152E481A0A68D6C1" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_7E9910EA9B92D1D4152E481A0A68D6C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_0D2C0D493AFBC31857B9481A0A68FA99" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_0D2C0D493AFBC31857B9481A0A68FA99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_8688529ECDF9E78F994B481A0A68CC70" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_8688529ECDF9E78F994B481A0A68CC70" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxAssetsDepreciationAndAmortization" xlink:label="loc_car_DeferredTaxAssetsDepreciationAndAmortization_62BFD06A6B04383699A2481A0A68F64C" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxAssetsDepreciationAndAmortization_62BFD06A6B04383699A2481A0A68F64C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DeferredTaxLiabilitiesDepreciationAndAmortization" xlink:label="loc_car_DeferredTaxLiabilitiesDepreciationAndAmortization_DC82CEF5B4CF09E23C41481A0A688880" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_car_DeferredTaxLiabilitiesDepreciationAndAmortization_DC82CEF5B4CF09E23C41481A0A688880" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities_DE54D650AF58032FE831481A0A6863E8" xlink:type="locator" />
    <link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DeferredIncomeTaxAssetsAndLiabilitiesLineItems_6044176DDE2219BE18D1481A0A68AA8C" xlink:to="loc_us-gaap_DeferredTaxLiabilities_DE54D650AF58032FE831481A0A6863E8" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/EarningsPerShare" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/EarningsPerShareTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/EmployeeBenefitPlans" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/EmployeeBenefitPlansAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_637D91ED1444C23666A1778F7F106BE8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_41FEE8C74732E77711BF778F7F100CA6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_637D91ED1444C23666A1778F7F106BE8" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_41FEE8C74732E77711BF778F7F100CA6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_83740DCB05F6CCD4E12C778914992D39" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_41FEE8C74732E77711BF778F7F100CA6" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_83740DCB05F6CCD4E12C778914992D39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_83740DCB05F6CCD4E12C778914992D39" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_83740DCB05F6CCD4E12C778914992D39" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_2CBA30FE672D71D9A9C9778914990953" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E" xlink:to="loc_us-gaap_EquitySecuritiesMember_2CBA30FE672D71D9A9C9778914990953" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtSecuritiesMember" xlink:label="loc_us-gaap_DebtSecuritiesMember_2F3ACB0BA0D93CF4F72277891499D408" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_69CF5484A3FA9776CE1B778914993B2E" xlink:to="loc_us-gaap_DebtSecuritiesMember_2F3ACB0BA0D93CF4F72277891499D408" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/EmployeeBenefitPlansTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/FairValueOfDerivativeInstrumentsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/FinancialInstruments" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/FinancialInstrumentsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_B45AC82F37EC1F77FD2E77A6C39F7F9E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_BBFBC9ACE33AF1DC8D3B77A6C39FF6E1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_B45AC82F37EC1F77FD2E77A6C39F7F9E" xlink:to="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_BBFBC9ACE33AF1DC8D3B77A6C39FF6E1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_117CFE21A2D1E7C6BFB377A6C39F9A5D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_BBFBC9ACE33AF1DC8D3B77A6C39FF6E1" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_117CFE21A2D1E7C6BFB377A6C39F9A5D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_117CFE21A2D1E7C6BFB377A6C39F9A5D" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_117CFE21A2D1E7C6BFB377A6C39F9A5D" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SoldMember" xlink:label="loc_car_SoldMember_0E3EE198E37790DAEB0077A6C39F5ACE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_car_SoldMember_0E3EE198E37790DAEB0077A6C39F5ACE" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_PurchaseMember" xlink:label="loc_car_PurchaseMember_D2080F76DF74A8E74BEF77A6C39FC2A6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_car_PurchaseMember_D2080F76DF74A8E74BEF77A6C39FC2A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestRateCapMember" xlink:label="loc_us-gaap_InterestRateCapMember_BF3D381122CF3CF7F5F177A6C39FD639" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_us-gaap_InterestRateCapMember_BF3D381122CF3CF7F5F177A6C39FD639" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_148350F0751D07198BBC77A6C39F680A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_148350F0751D07198BBC77A6C39F680A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_8129C0DF8CB7FBF9643D77A6C39F5306" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_us-gaap_InterestRateSwapMember_8129C0DF8CB7FBF9643D77A6C39F5306" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrencySwapMember" xlink:label="loc_us-gaap_CurrencySwapMember_8D77C9A99D71E2A7519B77A6C39FC687" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_AB42CDBC7E084327E02577A6C39F10E2" xlink:to="loc_us-gaap_CurrencySwapMember_8D77C9A99D71E2A7519B77A6C39FC687" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesAxis" xlink:label="loc_us-gaap_ConsolidatedEntitiesAxis_1D51078AC177FEBE618F77A6C39F2D9F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_BBFBC9ACE33AF1DC8D3B77A6C39FF6E1" xlink:to="loc_us-gaap_ConsolidatedEntitiesAxis_1D51078AC177FEBE618F77A6C39F2D9F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_7299F86609FCF2042BB777A6C39F519C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_1D51078AC177FEBE618F77A6C39F2D9F" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_7299F86609FCF2042BB777A6C39F519C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_7299F86609FCF2042BB777A6C39F519C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_1D51078AC177FEBE618F77A6C39F2D9F" xlink:to="loc_us-gaap_ConsolidatedEntitiesDomain_7299F86609FCF2042BB777A6C39F519C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="loc_us-gaap_SubsidiariesMember_2711AD9C2708B263937277A6C39FD1FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_7299F86609FCF2042BB777A6C39F519C" xlink:to="loc_us-gaap_SubsidiariesMember_2711AD9C2708B263937277A6C39FD1FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_3437E50FD195F47E269A77A6C39F6D2F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_B45AC82F37EC1F77FD2E77A6C39F7F9E" xlink:to="loc_invest_DerivativeNotionalAmount_3437E50FD195F47E269A77A6C39F6D2F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/FinancialInstrumentsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/FutureMinimumLeasePaymentsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsCashFlowsReconciliationGng201618Tables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsReconciliationOfCashAndCashEquivalentsGng201618Tables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/GuarantorAndNonGuarantorConsolidatingFinancialStatementsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/IncomeTaxes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/IncomeTaxesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureLineItems" xlink:label="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureTable" xlink:label="loc_car_IncomeTaxDisclosureTable_3AC37C36B608727A6E9F7C1460CD71D3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_car_IncomeTaxDisclosureTable_3AC37C36B608727A6E9F7C1460CD71D3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_EFBC0869FD79359D3C827C1460CD098D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxDisclosureTable_3AC37C36B608727A6E9F7C1460CD71D3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_EFBC0869FD79359D3C827C1460CD098D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_EFBC0869FD79359D3C827C1460CD098D" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_EFBC0869FD79359D3C827C1460CD098D" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProvisionadjustmentduetocorporatetaxratechangeMember" xlink:label="loc_car_ProvisionadjustmentduetocorporatetaxratechangeMember_3874C209D28460C5901C7C1460CE136D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A" xlink:to="loc_car_ProvisionadjustmentduetocorporatetaxratechangeMember_3874C209D28460C5901C7C1460CE136D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember" xlink:label="loc_car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember_F27CD49E2C622050C6777C1460CE143A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_D421191B9A05527157737C1460CD9E0A" xlink:to="loc_car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember_F27CD49E2C622050C6777C1460CE143A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_A3386A96281B353FAAD47C1460CE3C6B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxDisclosureTable_3AC37C36B608727A6E9F7C1460CD71D3" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_A3386A96281B353FAAD47C1460CE3C6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_A3386A96281B353FAAD47C1460CE3C6B" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_A3386A96281B353FAAD47C1460CE3C6B" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:label="loc_us-gaap_InternalRevenueServiceIRSMember_8792E298B7D09EACAF6A7C1460CEB179" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E" xlink:to="loc_us-gaap_InternalRevenueServiceIRSMember_8792E298B7D09EACAF6A7C1460CEB179" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherTaxMember" xlink:label="loc_car_OtherTaxMember_511343C7B91EB645126B7C1460CEBCD9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_F9723D56B4DC03BE6EDF7C1460CE754E" xlink:to="loc_car_OtherTaxMember_511343C7B91EB645126B7C1460CEBCD9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_37BEACC3D649FD7CA4717C1460CE5693" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxDisclosureTable_3AC37C36B608727A6E9F7C1460CD71D3" xlink:to="loc_us-gaap_RangeAxis_37BEACC3D649FD7CA4717C1460CE5693" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_C7747B866E79380250BA7C1460CEA9AF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_37BEACC3D649FD7CA4717C1460CE5693" xlink:to="loc_us-gaap_RangeMember_C7747B866E79380250BA7C1460CEA9AF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_C7747B866E79380250BA7C1460CEA9AF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_37BEACC3D649FD7CA4717C1460CE5693" xlink:to="loc_us-gaap_RangeMember_C7747B866E79380250BA7C1460CEA9AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_6CB3F9577798166C8F2D7C1460CE917D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_C7747B866E79380250BA7C1460CEA9AF" xlink:to="loc_us-gaap_MaximumMember_6CB3F9577798166C8F2D7C1460CE917D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_390E78DEC293FFB87B2B7C1460CF9F0B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_390E78DEC293FFB87B2B7C1460CF9F0B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="loc_us-gaap_OperatingLossCarryforwards_74E790548FF44B566D247C1460CF5169" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_OperatingLossCarryforwards_74E790548FF44B566D247C1460CF5169" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLossCarryforwardsExpirationDate" xlink:label="loc_us-gaap_OperatingLossCarryforwardsExpirationDate_D09A1993DAAD692B1D857C1460CFF635" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_OperatingLossCarryforwardsExpirationDate_D09A1993DAAD692B1D857C1460CFF635" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_0DDDBF8A6176493DFC8D7C1460CF7D39" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_0DDDBF8A6176493DFC8D7C1460CF7D39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_63B56D12DA4BF28E10DE7C1460CF589A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_63B56D12DA4BF28E10DE7C1460CF589A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings_B90A2DE856BE473FC41A7C1460CF6571" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_AA77F6372826627330847C1460CE6296" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings_B90A2DE856BE473FC41A7C1460CF6571" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/IncomeTaxesPretaxIncomeLossForDomesticAndForeignOperationsAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/IncomeTaxesTables" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxesLineItems" xlink:label="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxesTable" xlink:label="loc_car_IncomeTaxesTable_9C59F24A527C3EB1312E481A09F0C8E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_car_IncomeTaxesTable_9C59F24A527C3EB1312E481A09F0C8E6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_3B02EFF23F76CBF15758481A09F0C564" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxesTable_9C59F24A527C3EB1312E481A09F0C8E6" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_3B02EFF23F76CBF15758481A09F0C564" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_376C2D23C39217E6A52B481A09F0E17F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_3B02EFF23F76CBF15758481A09F0C564" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_376C2D23C39217E6A52B481A09F0E17F_default" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain" xlink:label="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_376C2D23C39217E6A52B481A09F0E17F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsAxis_3B02EFF23F76CBF15758481A09F0C564" xlink:to="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_376C2D23C39217E6A52B481A09F0E17F" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsMember" xlink:label="loc_car_VehicleProgramsMember_91767387DA74ECEFC0E4481A09F0407D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_VehicleRepurchaseAndGuaranteedDepreciationProgramsDomain_376C2D23C39217E6A52B481A09F0E17F" xlink:to="loc_car_VehicleProgramsMember_91767387DA74ECEFC0E4481A09F0407D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_004BDBDF5812FA1F9033481A09F058F2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_004BDBDF5812FA1F9033481A09F058F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_B1C26C190CB45AF98E1B481A09F0B54F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_B1C26C190CB45AF98E1B481A09F0B54F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_AF5A63D6498B6739255F481A09F0586B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_AF5A63D6498B6739255F481A09F0586B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_3DA083B389019EBE94F9481A09F0F860" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_3DA083B389019EBE94F9481A09F0F860" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" xlink:label="loc_us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_0B7C58A37B0676C102D4481A09F09C2B" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_0B7C58A37B0676C102D4481A09F09C2B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SummaryOfIncomeTaxContingenciesByBalanceSheetLocationTableTextBlock" xlink:label="loc_car_SummaryOfIncomeTaxContingenciesByBalanceSheetLocationTableTextBlock_823A0473ADADE2183FA3481A09F016DD" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_B00B2D4D93BEA8BCFAF1481A09F05948" xlink:to="loc_car_SummaryOfIncomeTaxContingenciesByBalanceSheetLocationTableTextBlock_823A0473ADADE2183FA3481A09F016DD" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/IntangibleAssets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/IntangibleAssetsAdditionalInformationDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/IntangibleAssetsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/LicensingActivities" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_FB3B10F979885891CC39481A0A86CC69" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_419B9A4D9586D5F23412481A0A865A73" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_FB3B10F979885891CC39481A0A86CC69" xlink:to="loc_us-gaap_StatementTable_419B9A4D9586D5F23412481A0A865A73" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_B5A25A84408424DFD256481A0A860CE7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_419B9A4D9586D5F23412481A0A865A73" xlink:to="loc_dei_LegalEntityAxis_B5A25A84408424DFD256481A0A860CE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_BC6D4606E08D9A56AF54481A0A86C0A1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_B5A25A84408424DFD256481A0A860CE7" xlink:to="loc_dei_EntityDomain_BC6D4606E08D9A56AF54481A0A86C0A1_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_BC6D4606E08D9A56AF54481A0A86C0A1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_B5A25A84408424DFD256481A0A860CE7" xlink:to="loc_dei_EntityDomain_BC6D4606E08D9A56AF54481A0A86C0A1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/LicensingActivitiesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_LicenseAgreementsLineItems" xlink:label="loc_car_LicenseAgreementsLineItems_A3654BA151AA49CDAFC9481A0AA4388A" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_LicensesAgreementsTable" xlink:label="loc_car_LicensesAgreementsTable_B2403FE40AE44F36C444481A0AA42FCF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_LicenseAgreementsLineItems_A3654BA151AA49CDAFC9481A0AA4388A" xlink:to="loc_car_LicensesAgreementsTable_B2403FE40AE44F36C444481A0AA42FCF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_21A081D629C36FB444E2481A0AA4517F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_LicensesAgreementsTable_B2403FE40AE44F36C444481A0AA42FCF" xlink:to="loc_dei_LegalEntityAxis_21A081D629C36FB444E2481A0AA4517F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_46CE7CA7BF45C605753E481A0AA43F7C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_21A081D629C36FB444E2481A0AA4517F" xlink:to="loc_dei_EntityDomain_46CE7CA7BF45C605753E481A0AA43F7C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_46CE7CA7BF45C605753E481A0AA43F7C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_21A081D629C36FB444E2481A0AA4517F" xlink:to="loc_dei_EntityDomain_46CE7CA7BF45C605753E481A0AA43F7C" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/LongTermDebtAndBorrowingArrangements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/LongTermDebtAndBorrowingArrangementsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_89D402AD433F9B6DAB2C7B87BFAFB0FB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_89D402AD433F9B6DAB2C7B87BFAFB0FB" xlink:to="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_0930BE07DE8EC28619EE7B87BFAFD8C3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_0930BE07DE8EC28619EE7B87BFAFD8C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_0930BE07DE8EC28619EE7B87BFAFD8C3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_0930BE07DE8EC28619EE7B87BFAFD8C3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_154F26AAE558EAC30F0B7B87BFAF938C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307" xlink:to="loc_us-gaap_LoansPayableMember_154F26AAE558EAC30F0B7B87BFAF938C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_77C5DB2104B2650E53647B87BFAFD3C8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_E3F8E38A34A83455B6DF7B87BFAFF307" xlink:to="loc_us-gaap_SeniorNotesMember_77C5DB2104B2650E53647B87BFAFD3C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_9D6B18C3A70883ADB8587B87BFAF14B8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:to="loc_us-gaap_DebtInstrumentAxis_9D6B18C3A70883ADB8587B87BFAF14B8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9D6B18C3A70883ADB8587B87BFAF14B8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9D6B18C3A70883ADB8587B87BFAF14B8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FiveAndOneOverFourSeniorNotesMember" xlink:label="loc_car_FiveAndOneOverFourSeniorNotesMember_A4B1FDB82E47377043897B87BFAF59E1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:to="loc_car_FiveAndOneOverFourSeniorNotesMember_A4B1FDB82E47377043897B87BFAF59E1" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FiveAndOneOverTwoSeniorNotesMember" xlink:label="loc_car_FiveAndOneOverTwoSeniorNotesMember_3C82073AC908E040D4EE7B87BFAF065B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:to="loc_car_FiveAndOneOverTwoSeniorNotesMember_3C82073AC908E040D4EE7B87BFAF065B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember" xlink:label="loc_car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember_C96A38B91F5B84EAD5887B87BFAF5435" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:to="loc_car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember_C96A38B91F5B84EAD5887B87BFAF5435" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember" xlink:label="loc_car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember_6C43D454F1BB9CF79EF47B87BFAF313A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:to="loc_car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember_6C43D454F1BB9CF79EF47B87BFAF313A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateSeniorNotesDueDecember2017Member" xlink:label="loc_car_FloatingRateSeniorNotesDueDecember2017Member_4385ACA18F1010CC07567B87BFAFC32B" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9E9D48CC47EADCCB1FB47B87BFAF4D73" xlink:to="loc_car_FloatingRateSeniorNotesDueDecember2017Member_4385ACA18F1010CC07567B87BFAFC32B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_7B3EAB667D68207091717B87BFAFC6E6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:to="loc_us-gaap_VariableRateAxis_7B3EAB667D68207091717B87BFAFC6E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_6736BEF4C60782C64EC47B87BFAF4B2D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_7B3EAB667D68207091717B87BFAFC6E6" xlink:to="loc_us-gaap_VariableRateDomain_6736BEF4C60782C64EC47B87BFAF4B2D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_6736BEF4C60782C64EC47B87BFAF4B2D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_7B3EAB667D68207091717B87BFAFC6E6" xlink:to="loc_us-gaap_VariableRateDomain_6736BEF4C60782C64EC47B87BFAF4B2D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_3D7DA988B7D981684F107B87BFAF4ED9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_3D7DA988B7D981684F107B87BFAF4ED9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_DD57DCB43D7D7C7C9A987B87BFAF0B99_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_3D7DA988B7D981684F107B87BFAF4ED9" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_DD57DCB43D7D7C7C9A987B87BFAF0B99_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_DD57DCB43D7D7C7C9A987B87BFAF0B99" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_3D7DA988B7D981684F107B87BFAF4ED9" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_DD57DCB43D7D7C7C9A987B87BFAF0B99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_1472AEA936ACE48C90F27B87BFAFAD9B" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_CBC7146476F7E5A339DC7B87BFAFCE52" xlink:to="loc_us-gaap_RangeAxis_1472AEA936ACE48C90F27B87BFAFAD9B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_18F3273CF50AA7D78C827B87BFAFBC5E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_1472AEA936ACE48C90F27B87BFAFAD9B" xlink:to="loc_us-gaap_RangeMember_18F3273CF50AA7D78C827B87BFAFBC5E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_18F3273CF50AA7D78C827B87BFAFBC5E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_1472AEA936ACE48C90F27B87BFAFAD9B" xlink:to="loc_us-gaap_RangeMember_18F3273CF50AA7D78C827B87BFAFBC5E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ConvertibleSeniorNoteIssuancePriceAsPercentageOfFaceValue" xlink:label="loc_car_ConvertibleSeniorNoteIssuancePriceAsPercentageOfFaceValue_C01EA6C377DBAAF8E9627B87BFAF8506" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_89D402AD433F9B6DAB2C7B87BFAFB0FB" xlink:to="loc_car_ConvertibleSeniorNoteIssuancePriceAsPercentageOfFaceValue_C01EA6C377DBAAF8E9627B87BFAF8506" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_F253E5C4B85F34B7745C7B87BFAFB89B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_89D402AD433F9B6DAB2C7B87BFAFB0FB" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_F253E5C4B85F34B7745C7B87BFAFB89B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/LongTermDebtAndBorrowingArrangementsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/OtherCurrentAssets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/OtherCurrentAssetsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/OutstandingCommonStockEquivalentsThatWereAntiDilutiveDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_B99A6934FFD41B794825481A0A36A5DB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0006ED53B5DD64F78BB0481A0A36D251" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_B99A6934FFD41B794825481A0A36A5DB" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0006ED53B5DD64F78BB0481A0A36D251" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_A2BD33EA29D0BECF78DB481A0A36DCB7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0006ED53B5DD64F78BB0481A0A36D251" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_A2BD33EA29D0BECF78DB481A0A36DCB7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_FFE5D2065DB86C348DEB481A0A36C922_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_A2BD33EA29D0BECF78DB481A0A36DCB7" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_FFE5D2065DB86C348DEB481A0A36C922_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_FFE5D2065DB86C348DEB481A0A36C922" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_A2BD33EA29D0BECF78DB481A0A36DCB7" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_FFE5D2065DB86C348DEB481A0A36C922" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_5D8F31FAA55394327C52481A0A364FE1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_FFE5D2065DB86C348DEB481A0A36C922" xlink:to="loc_us-gaap_RestrictedStockMember_5D8F31FAA55394327C52481A0A364FE1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_C75811CA864BC00D6FDB481A0A36149C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_B99A6934FFD41B794825481A0A36A5DB" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_C75811CA864BC00D6FDB481A0A36149C" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/OutstandingCommonStockEquivalentsThatWereAntiDilutiveTickmarksDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/PretaxIncomeLossForDomesticAndForeignOperationsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/PropertyAndEquipmentNet" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/PropertyAndEquipmentNetAdditionalInformationDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/PropertyAndEquipmentNetTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ProvisionForBenefitFromIncomeTaxesDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ReconciliationOfAdjustedEbitdaToIncomeLossDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AcquiredIndefiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredIndefiniteLivedIntangibleAssetsLineItems_C21C5A2504D4BB4874CD77931CA1C9A2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_59D6444284938979A05577931CA04A75" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredIndefiniteLivedIntangibleAssetsLineItems_C21C5A2504D4BB4874CD77931CA1C9A2" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_59D6444284938979A05577931CA04A75" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_DC30A11B2EA8AE0011F877931CA0F0F5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_59D6444284938979A05577931CA04A75" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_DC30A11B2EA8AE0011F877931CA0F0F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5A4D49EC01894259713177931CA055CE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_DC30A11B2EA8AE0011F877931CA0F0F5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5A4D49EC01894259713177931CA055CE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5A4D49EC01894259713177931CA055CE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_DC30A11B2EA8AE0011F877931CA0F0F5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5A4D49EC01894259713177931CA055CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AcquisitionRelatedCostsMember" xlink:label="loc_us-gaap_AcquisitionRelatedCostsMember_FADD8FE8BD79DE3B97A277931CA009B2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5A4D49EC01894259713177931CA055CE" xlink:to="loc_us-gaap_AcquisitionRelatedCostsMember_FADD8FE8BD79DE3B97A277931CA009B2" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ReconciliationOfUSFederalIncomeTaxStatutoryRateAndEffectiveIncomeTaxRateDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureLineItems" xlink:label="loc_car_IncomeTaxDisclosureLineItems_FCA2BC42298E3D19D8F476E596DE6167" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureTable" xlink:label="loc_car_IncomeTaxDisclosureTable_F62B9B04F19D0A77163E76E596DEE435" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_IncomeTaxDisclosureLineItems_FCA2BC42298E3D19D8F476E596DE6167" xlink:to="loc_car_IncomeTaxDisclosureTable_F62B9B04F19D0A77163E76E596DEE435" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_1CA6E0253504643B3C5976E596DE4F98" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxDisclosureTable_F62B9B04F19D0A77163E76E596DEE435" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_1CA6E0253504643B3C5976E596DE4F98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_4FDD424F7BBFBE0EB29176E596DE7C2D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_1CA6E0253504643B3C5976E596DE4F98" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_4FDD424F7BBFBE0EB29176E596DE7C2D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_4FDD424F7BBFBE0EB29176E596DE7C2D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_1CA6E0253504643B3C5976E596DE4F98" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_4FDD424F7BBFBE0EB29176E596DE7C2D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherTaxMember" xlink:label="loc_car_OtherTaxMember_A8F470B810B32FEE783676E596DEEBAD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_4FDD424F7BBFBE0EB29176E596DE7C2D" xlink:to="loc_car_OtherTaxMember_A8F470B810B32FEE783676E596DEEBAD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_13DF6DD4367CE3469E3A76E596DE3CF2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_FCA2BC42298E3D19D8F476E596DE6167" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_13DF6DD4367CE3469E3A76E596DE3CF2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_449FD45FAD899789D93E76E596DEAA22" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_FCA2BC42298E3D19D8F476E596DE6167" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_449FD45FAD899789D93E76E596DEAA22" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/Restructuring" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/RestructuringAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_0C9580CD7A1A342A24907793208FA46E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_0C9580CD7A1A342A24907793208FA46E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_AF831E449133CBF425C5779320909A0C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_0C9580CD7A1A342A24907793208FA46E" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_AF831E449133CBF425C5779320909A0C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_AF831E449133CBF425C5779320909A0C" xlink:to="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_AF831E449133CBF425C5779320909A0C" xlink:to="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmericasMember" xlink:label="loc_us-gaap_AmericasMember_373F70B9E98527B17680779320902268" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7" xlink:to="loc_us-gaap_AmericasMember_373F70B9E98527B17680779320902268" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalMember" xlink:label="loc_car_InternationalMember_CC05EA46B4C6627A024877932090E5ED" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2BF30EC164BF78A38FF377932090C6D7" xlink:to="loc_car_InternationalMember_CC05EA46B4C6627A024877932090E5ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_2FCCBEC4F9ED45804090779320907119" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_0C9580CD7A1A342A24907793208FA46E" xlink:to="loc_us-gaap_RestructuringPlanAxis_2FCCBEC4F9ED45804090779320907119" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_2FCCBEC4F9ED45804090779320907119" xlink:to="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_2FCCBEC4F9ED45804090779320907119" xlink:to="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2018TruckRestructuringMember" xlink:label="loc_car_A2018TruckRestructuringMember_44780F25A7F16679B9EF779320900AF7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:to="loc_car_A2018TruckRestructuringMember_44780F25A7F16679B9EF779320900AF7" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2015AcquisitionIntegrationMember" xlink:label="loc_car_A2015AcquisitionIntegrationMember_A9DB543735F858C876D8779320903FB3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:to="loc_car_A2015AcquisitionIntegrationMember_A9DB543735F858C876D8779320903FB3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_T17RestructuringMember" xlink:label="loc_car_T17RestructuringMember_44217EA097C5EE24A2AF779320909CB3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:to="loc_car_T17RestructuringMember_44217EA097C5EE24A2AF779320909CB3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2014T15RestructuringMember" xlink:label="loc_car_A2014T15RestructuringMember_269B2841695670345BD37793209125CC" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:to="loc_car_A2014T15RestructuringMember_269B2841695670345BD37793209125CC" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2011AvisEuropeRestructuringMember" xlink:label="loc_car_A2011AvisEuropeRestructuringMember_14141BF7BA6186597A4577932091584F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_AFC582535995460F4E45779320907940" xlink:to="loc_car_A2011AvisEuropeRestructuringMember_14141BF7BA6186597A4577932091584F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="loc_us-gaap_RestructuringCharges_C643A29C625DF6F50C9E779320910ADD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:to="loc_us-gaap_RestructuringCharges_C643A29C625DF6F50C9E779320910ADD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated_9D41C2D38012581E92BD77932091614B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated_9D41C2D38012581E92BD77932091614B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated" xlink:label="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated_5CB182C664E076B7B8B677932091BCDA" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:to="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated_5CB182C664E076B7B8B677932091BCDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_E35B2AC64C76AB0177F5779320915B84" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_31B7087743A5DB2D6ACD779320911CD8" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_E35B2AC64C76AB0177F5779320915B84" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/RestructuringRestructuringOtherRelatedChargesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/RestructuringTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfAccountsPayableAndOtherCurrentLiabilitiesDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfAvailableFundingUnderVehicleProgramsDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_69860F0DC324216099387B87BF90A61A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_69860F0DC324216099387B87BF90A61A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_AC0EA1D4706EFE951F927B87BF903984" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_69860F0DC324216099387B87BF90A61A" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_AC0EA1D4706EFE951F927B87BF903984" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_AC0EA1D4706EFE951F927B87BF903984" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_AC0EA1D4706EFE951F927B87BF903984" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AvisBudgetRentalCarFundingProgramMember" xlink:label="loc_car_AvisBudgetRentalCarFundingProgramMember_DC8DF7104D8C089D6E357B87BF90DE08" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_AvisBudgetRentalCarFundingProgramMember_DC8DF7104D8C089D6E357B87BF90DE08" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtDueToRentalCarFundingMember" xlink:label="loc_car_DebtDueToRentalCarFundingMember_1D85403E661821DD763F7B87BF900319" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_DebtDueToRentalCarFundingMember_1D85403E661821DD763F7B87BF900319" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AmericasDebtBorrowingsMember" xlink:label="loc_car_AmericasDebtBorrowingsMember_9940EF1E15146AA41CED7B87BF9042D8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_AmericasDebtBorrowingsMember_9940EF1E15146AA41CED7B87BF9042D8" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalDebtBorrowingsMember" xlink:label="loc_car_InternationalDebtBorrowingsMember_DF3815507CA8A2DC1E757B87BF90E6C2" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_InternationalDebtBorrowingsMember_DF3815507CA8A2DC1E757B87BF90E6C2" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalCapitalLeasesDomain" xlink:label="loc_car_InternationalCapitalLeasesDomain_AAD323BA31F6233D2F4F7B87BF901D87" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_InternationalCapitalLeasesDomain_AAD323BA31F6233D2F4F7B87BF901D87" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherDebtUnderVehicleProgramMember" xlink:label="loc_car_OtherDebtUnderVehicleProgramMember_DE04BAD49E465744216C7B87BF9080F0" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_OtherDebtUnderVehicleProgramMember_DE04BAD49E465744216C7B87BF9080F0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsMember" xlink:label="loc_car_DebtUnderVehicleProgramsMember_FDB80CEFB10F168027977B87BF90387B" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D4D379912A6AC971D8AF7B87BF90E7CD" xlink:to="loc_car_DebtUnderVehicleProgramsMember_FDB80CEFB10F168027977B87BF90387B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_12C947CE6A5677788ABC7B87BF908AF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_12C947CE6A5677788ABC7B87BF908AF5" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt" xlink:label="loc_car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt_557551C375A4D8D7A1E37B87BF9059A5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt_557551C375A4D8D7A1E37B87BF9059A5" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramDebtTotalCapacity" xlink:label="loc_car_VehicleProgramDebtTotalCapacity_6882D9BE93B94E28907A7B87BF90FA26" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_car_VehicleProgramDebtTotalCapacity_6882D9BE93B94E28907A7B87BF90FA26" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramOutstandingDebt" xlink:label="loc_car_VehicleProgramOutstandingDebt_08F13D3A8271141E89B67B87BF9081FF" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_car_VehicleProgramOutstandingDebt_08F13D3A8271141E89B67B87BF9081FF" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramDebtAvailableCapacity" xlink:label="loc_car_VehicleProgramDebtAvailableCapacity_4A40D7CAEE944E799D307B87BF9008B9" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_01C48690D310733BB67C7B87BF900594" xlink:to="loc_car_VehicleProgramDebtAvailableCapacity_4A40D7CAEE944E799D307B87BF9008B9" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfCarryingAmountsAndEstimatedFairValuesDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_8155DDCB202FACBDE5E1481A09B45EB4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_us-gaap_DebtInstrumentTable_8155DDCB202FACBDE5E1481A09B45EB4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_C3E4D72C7F712FA9750B481A09B4A9AC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_8155DDCB202FACBDE5E1481A09B45EB4" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_C3E4D72C7F712FA9750B481A09B4A9AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_C3E4D72C7F712FA9750B481A09B4A9AC" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_479E8A0104B808DB0011481A09B44A98" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_C3E4D72C7F712FA9750B481A09B4A9AC" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_479E8A0104B808DB0011481A09B44A98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_479E8A0104B808DB0011481A09B44A98" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_08A360763C56987D362E481A09B4F18E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_08A360763C56987D362E481A09B4F18E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_37C3A6F833ACC0828B08481A09B4378A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_45B6EA4D1B1C82137CB0481A09B4C465" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_37C3A6F833ACC0828B08481A09B4378A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_A0093A84B1CB4F196E80481A09B4AE25" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_us-gaap_LongTermDebtCurrent_A0093A84B1CB4F196E80481A09B4AE25" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_LongTermDebtExcludingConvertibleDebt" xlink:label="loc_car_LongTermDebtExcludingConvertibleDebt_9AABC260F22C3FDBA719481A09B4839D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_car_LongTermDebtExcludingConvertibleDebt_9AABC260F22C3FDBA719481A09B4839D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtDueToAvisBudgetRentalCarFundingAesopLlcRelatedParty" xlink:label="loc_car_DebtDueToAvisBudgetRentalCarFundingAesopLlcRelatedParty_34C5EF19DF9C612B3173481A09B44D07" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_car_DebtDueToAvisBudgetRentalCarFundingAesopLlcRelatedParty_34C5EF19DF9C612B3173481A09B44D07" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleBackedDebt" xlink:label="loc_car_VehicleBackedDebt_3D171359A4DA9372A0E2481A09B44093" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_car_VehicleBackedDebt_3D171359A4DA9372A0E2481A09B44093" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsInterestRateSwapsAndInterestRateContracts" xlink:label="loc_car_DebtUnderVehicleProgramsInterestRateSwapsAndInterestRateContracts_DAADFE514947597C3A4D481A09B46F90" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E3EE24698DD7F2C412481A09B4ED2C" xlink:to="loc_car_DebtUnderVehicleProgramsInterestRateSwapsAndInterestRateContracts_DAADFE514947597C3A4D481A09B46F90" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfCommittedCreditFacilitiesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_642F56997D9F67C914AB7B87BF9F79C9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_6662934D925F1A6F42907B87BF9F00CF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_642F56997D9F67C914AB7B87BF9F79C9" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_6662934D925F1A6F42907B87BF9F00CF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_4A01651008FE5FB68EEF7B87BF9FA003" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_6662934D925F1A6F42907B87BF9F00CF" xlink:to="loc_us-gaap_DebtInstrumentAxis_4A01651008FE5FB68EEF7B87BF9FA003" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_BC986D1702D0C8B9666C7B87BF9FB57C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_4A01651008FE5FB68EEF7B87BF9FA003" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_BC986D1702D0C8B9666C7B87BF9FB57C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_BC986D1702D0C8B9666C7B87BF9FB57C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_4A01651008FE5FB68EEF7B87BF9FA003" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_BC986D1702D0C8B9666C7B87BF9FB57C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember" xlink:label="loc_car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember_F14798408F8BAEBEAF1E7B87BF9FEA83" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_BC986D1702D0C8B9666C7B87BF9FB57C" xlink:to="loc_car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember_F14798408F8BAEBEAF1E7B87BF9FEA83" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4A7A006F0EEB482E9BF97B87BF9F3276" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_6662934D925F1A6F42907B87BF9F00CF" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4A7A006F0EEB482E9BF97B87BF9F3276" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4A7A006F0EEB482E9BF97B87BF9F3276" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4A7A006F0EEB482E9BF97B87BF9F3276" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_UncommittedCreditFacilityMember" xlink:label="loc_car_UncommittedCreditFacilityMember_B0834DE3FA0503B46A927B87BF9F1D29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918" xlink:to="loc_car_UncommittedCreditFacilityMember_B0834DE3FA0503B46A927B87BF9F1D29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BankOverdraftsMember" xlink:label="loc_us-gaap_BankOverdraftsMember_A8D4A8B86A1DCA453E687B87BF9FA519" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C909F7490DF8C7533AAA7B87BF9F8918" xlink:to="loc_us-gaap_BankOverdraftsMember_A8D4A8B86A1DCA453E687B87BF9FA519" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_5AD665F6ACF1C901F8917B87BF9F11D2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_6662934D925F1A6F42907B87BF9F00CF" xlink:to="loc_us-gaap_RangeAxis_5AD665F6ACF1C901F8917B87BF9F11D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_5AD665F6ACF1C901F8917B87BF9F11D2" xlink:to="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_5AD665F6ACF1C901F8917B87BF9F11D2" xlink:to="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_A3327C1126BD6B7975D77B87BF9FFDCE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C" xlink:to="loc_us-gaap_MinimumMember_A3327C1126BD6B7975D77B87BF9FFDCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_EB5D3084A21B5113ABA27B87BF9F8FE4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_AA4C9312D294664DE05E7B87BF9FEC7C" xlink:to="loc_us-gaap_MaximumMember_EB5D3084A21B5113ABA27B87BF9F8FE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_2F975A57820E474015E37B87BF9F06AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_642F56997D9F67C914AB7B87BF9F79C9" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_2F975A57820E474015E37B87BF9F06AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_39C4893647B6640D827B7B87BF9FED4F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_642F56997D9F67C914AB7B87BF9F79C9" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_39C4893647B6640D827B7B87BF9FED4F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfCommittedCreditFacilitiesDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_3302887C08A6C3D86079481A09D23793" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_3302887C08A6C3D86079481A09D23793" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_58454571BFE77138E5B2481A09D2256C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_3302887C08A6C3D86079481A09D23793" xlink:to="loc_us-gaap_DebtInstrumentAxis_58454571BFE77138E5B2481A09D2256C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_58454571BFE77138E5B2481A09D2256C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_58454571BFE77138E5B2481A09D2256C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember" xlink:label="loc_car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember_78610F2E64699DF9BDBC481A09D28E4B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D" xlink:to="loc_car_RevolvingCreditFacilityMaturingTwoThousandTwentyOneMember_78610F2E64699DF9BDBC481A09D28E4B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherCreditFacilityMember" xlink:label="loc_car_OtherCreditFacilityMember_7930AB1C148B81ACF15A481A09D2AFE9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0734D5178A0636DBABD1481A09D2785D" xlink:to="loc_car_OtherCreditFacilityMember_7930AB1C148B81ACF15A481A09D2AFE9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_20200B8E040DB9AE8E9E481A09D2DB99" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_20200B8E040DB9AE8E9E481A09D2DB99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_067324CE8013CE13CB9D481A09D2946F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:to="loc_us-gaap_LineOfCredit_067324CE8013CE13CB9D481A09D2946F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_5B8C44E962140F2E28DF481A09D228C4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_5B8C44E962140F2E28DF481A09D228C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_481D9A816989C7087C2E481A09D25D89" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_CE35180908C5670F4E6F481A09D24EA6" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_481D9A816989C7087C2E481A09D25D89" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfContractualMaturitiesDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_9CC00FB93A404F4021877B87BF909174" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_9CC00FB93A404F4021877B87BF909174" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_C448F31D6C2EEA21A7337B87BF901AD2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_9CC00FB93A404F4021877B87BF909174" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_C448F31D6C2EEA21A7337B87BF901AD2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5525852A011B5E1747D27B87BF909232_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_C448F31D6C2EEA21A7337B87BF901AD2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_5525852A011B5E1747D27B87BF909232_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5525852A011B5E1747D27B87BF909232" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_C448F31D6C2EEA21A7337B87BF901AD2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_5525852A011B5E1747D27B87BF909232" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsMember" xlink:label="loc_car_VehicleProgramsMember_D241D424BCF57BB4EF5B7B87BF90ADC0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_5525852A011B5E1747D27B87BF909232" xlink:to="loc_car_VehicleProgramsMember_D241D424BCF57BB4EF5B7B87BF90ADC0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_74E8A671AAC76C4A779A7B87BF908A68" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_74E8A671AAC76C4A779A7B87BF908A68" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2AF8CFC3D05BD5D5F28C7B87BF907F88" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2AF8CFC3D05BD5D5F28C7B87BF907F88" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1FA5C38E90A32E8468CB7B87BF908F8E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1FA5C38E90A32E8468CB7B87BF908F8E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_8408B7816C10362FE53E7B87BF904B87" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_8408B7816C10362FE53E7B87BF904B87" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_D1A023638A7A2D0D07FD7B87BF90A714" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_D1A023638A7A2D0D07FD7B87BF90A714" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_CBB750255BD04B910FE37B87BF903D50" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_CBB750255BD04B910FE37B87BF903D50" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramDebtAmountOutstanding" xlink:label="loc_car_VehicleProgramDebtAmountOutstanding_386A7E9681EEE8B4CE1B7B87BF90B0AF" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_6644497C7ED1C75216417B87BF90BF24" xlink:to="loc_car_VehicleProgramDebtAmountOutstanding_386A7E9681EEE8B4CE1B7B87BF90B0AF" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfDebtUnderVehicleProgramsDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable" xlink:label="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_63B837A916E5FB8C8DC87B41DA1BF7F2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_63B837A916E5FB8C8DC87B41DA1BF7F2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_03BF88385C4B8FDEC4F97B41DA1B31D6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsTable_63B837A916E5FB8C8DC87B41DA1BF7F2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_03BF88385C4B8FDEC4F97B41DA1B31D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03BF88385C4B8FDEC4F97B41DA1B31D6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03BF88385C4B8FDEC4F97B41DA1B31D6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtDueToRentalCarFundingMember" xlink:label="loc_car_DebtDueToRentalCarFundingMember_F10941EB11E5A75F5B4A7B41DA1BCD68" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_DebtDueToRentalCarFundingMember_F10941EB11E5A75F5B4A7B41DA1BCD68" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AmericasDebtBorrowingsMember" xlink:label="loc_car_AmericasDebtBorrowingsMember_6297A1BB6327020506377B41DA1B2645" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_AmericasDebtBorrowingsMember_6297A1BB6327020506377B41DA1B2645" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalDebtBorrowingsMember" xlink:label="loc_car_InternationalDebtBorrowingsMember_F89441CC8F83BB3F06007B41DA1BB3D3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_InternationalDebtBorrowingsMember_F89441CC8F83BB3F06007B41DA1BB3D3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalCapitalLeasesDomain" xlink:label="loc_car_InternationalCapitalLeasesDomain_2A555F749A698AAF533A7B41DA1BCAB0" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_InternationalCapitalLeasesDomain_2A555F749A698AAF533A7B41DA1BCAB0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_OtherDebtUnderVehicleProgramMember" xlink:label="loc_car_OtherDebtUnderVehicleProgramMember_CC9BE6B508199DE737887B41DA1B5C91" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_OtherDebtUnderVehicleProgramMember_CC9BE6B508199DE737887B41DA1B5C91" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramsMember" xlink:label="loc_car_VehicleProgramsMember_927E5C28796F7FCFDA0B7B41DA1BFFBC" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_VehicleProgramsMember_927E5C28796F7FCFDA0B7B41DA1BFFBC" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DebtUnderVehicleProgramsMember" xlink:label="loc_car_DebtUnderVehicleProgramsMember_61719F18688DDE1818DF7B41DA1BCDE9" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A5065EE2A5CC22F362A87B41DA1B8B50" xlink:to="loc_car_DebtUnderVehicleProgramsMember_61719F18688DDE1818DF7B41DA1BCDE9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentIssuanceDate1" xlink:label="loc_us-gaap_DebtInstrumentIssuanceDate1_5E8FF6DAA76F5A0D72717B61B3836C8C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_DebtInstrumentIssuanceDate1_5E8FF6DAA76F5A0D72717B61B3836C8C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_40255ABFDFFA698E760D7B61B3835C96" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_DebtInstrumentMaturityDate_40255ABFDFFA698E760D7B61B3835C96" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NewlyIssuedEuropeanCreditFacility" xlink:label="loc_car_NewlyIssuedEuropeanCreditFacility_EB6365724506B6AC35977B61B3837DD0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_car_NewlyIssuedEuropeanCreditFacility_EB6365724506B6AC35977B61B3837DD0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_FDB65CFEFA8AF86CA84E7B61B383E4E0" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_FDB65CFEFA8AF86CA84E7B61B383E4E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetBackedSecuritiesAtCarryingValue" xlink:label="loc_us-gaap_AssetBackedSecuritiesAtCarryingValue_0AF650A1A47903D70B8C7B61B3833579" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_AssetBackedSecuritiesAtCarryingValue_0AF650A1A47903D70B8C7B61B3833579" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate" xlink:label="loc_us-gaap_CapitalLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate_4832C6391DC0E2F0EBC17B61B3836643" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_CapitalLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate_4832C6391DC0E2F0EBC17B61B3836643" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt" xlink:label="loc_car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt_99E2B6E237333408834E7B61B383C57B" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt_99E2B6E237333408834E7B61B383C57B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleProgramOutstandingDebt" xlink:label="loc_car_VehicleProgramOutstandingDebt_98D8B6041D79152222557B61B383147F" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_car_VehicleProgramOutstandingDebt_98D8B6041D79152222557B61B383147F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_0756330F1CF2C24924E57B61B383FB95" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems_7387F2A2AD29D26DE9E37B61B3835C54" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_0756330F1CF2C24924E57B61B383FB95" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfEffectOfDerivativesRecognizedDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_92A6F1AE6C5EE5BE44308B699329F83A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:to="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_92A6F1AE6C5EE5BE44308B699329F83A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_4ED149D7C01971EE1F938B69932973FC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_92A6F1AE6C5EE5BE44308B699329F83A" xlink:to="loc_us-gaap_HedgingDesignationAxis_4ED149D7C01971EE1F938B69932973FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_4ED149D7C01971EE1F938B69932973FC" xlink:to="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_4ED149D7C01971EE1F938B69932973FC" xlink:to="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_5F56D0187F0F07C33DFA8B69932950C3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_5F56D0187F0F07C33DFA8B69932950C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_09428D8763715ADC61CA8B699329E99A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_09D999C0DA1799C262258B6993291717" xlink:to="loc_us-gaap_NondesignatedMember_09428D8763715ADC61CA8B699329E99A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_65B4D7B25346C32558638B6993293DC2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_92A6F1AE6C5EE5BE44308B699329F83A" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_65B4D7B25346C32558638B6993293DC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_65B4D7B25346C32558638B6993293DC2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_65B4D7B25346C32558638B6993293DC2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_BA00FA4B83FF9A07EA718B69932A2AA3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:to="loc_us-gaap_InterestRateSwapMember_BA00FA4B83FF9A07EA718B69932A2AA3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_0DC3F912D6D8F443A8638B69932A9F49" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_0DC3F912D6D8F443A8638B69932A9F49" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrencySwapMember" xlink:label="loc_us-gaap_CurrencySwapMember_2FB1347E68D05473CC898B69932A9CAF" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:to="loc_us-gaap_CurrencySwapMember_2FB1347E68D05473CC898B69932A9CAF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestRateContractMember" xlink:label="loc_us-gaap_InterestRateContractMember_36A0A88916AE0B8C02178B69932AD2D3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:to="loc_us-gaap_InterestRateContractMember_36A0A88916AE0B8C02178B69932AD2D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="loc_us-gaap_CommodityContractMember_2470A71871187173CCF48B69932A3BA4" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_77EEE02A54C2248526DE8B6993298779" xlink:to="loc_us-gaap_CommodityContractMember_2470A71871187173CCF48B69932A3BA4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_F6EC68DC2818C8DB96548B69932A17B4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsTable_92A6F1AE6C5EE5BE44308B699329F83A" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_F6EC68DC2818C8DB96548B69932A17B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_F6EC68DC2818C8DB96548B69932A17B4" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_F6EC68DC2818C8DB96548B69932A17B4" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpenseMember" xlink:label="loc_us-gaap_InterestExpenseMember_96F208447F3CD74061B78B69932AFF79" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7" xlink:to="loc_us-gaap_InterestExpenseMember_96F208447F3CD74061B78B69932AFF79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpenseMember" xlink:label="loc_us-gaap_OperatingExpenseMember_5B5360696C9E5E2DD3458B69932A0C80" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_E78DC507896F3368168C8B69932A9CA7" xlink:to="loc_us-gaap_OperatingExpenseMember_5B5360696C9E5E2DD3458B69932A0C80" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_EBF62C05F45FAD0543438B69932A46BF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_EBF62C05F45FAD0543438B69932A46BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_E17E2AF1CA1014DD6C388B69932BE8D4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_E17E2AF1CA1014DD6C388B69932BE8D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1C57EB27F2947952428B8B69932B3F51" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1C57EB27F2947952428B8B69932B3F51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_1CEFB311A120BB7D81848B69932BFBA5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCostMethodInvestmentsLineItems_3BF496B47E253E02D3518B69932AA0F1" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_1CEFB311A120BB7D81848B69932BFBA5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfEstimatedUsefulLivesDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_518BB1AEF80CC8C5208D481A09F090DB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8CE8BD72E6A215E368AB481A09F0B8D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_518BB1AEF80CC8C5208D481A09F090DB" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8CE8BD72E6A215E368AB481A09F0B8D8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3FEB19F7F06AFD35791A481A09F0137B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8CE8BD72E6A215E368AB481A09F0B8D8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3FEB19F7F06AFD35791A481A09F0137B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3FEB19F7F06AFD35791A481A09F0137B" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3FEB19F7F06AFD35791A481A09F0137B" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BuildingMember" xlink:label="loc_us-gaap_BuildingMember_B4376DC9DF040C68F5FB481A09F053F6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:to="loc_us-gaap_BuildingMember_B4376DC9DF040C68F5FB481A09F053F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_D923DD67CFCF853D6F85481A09F0B5E1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_D923DD67CFCF853D6F85481A09F0B5E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_2F0F01ADA447791624A5481A09F0621F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_2F0F01ADA447791624A5481A09F0621F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VehiclesMember" xlink:label="loc_us-gaap_VehiclesMember_C67407491E4AD01B1FAE481A09F06C31" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_D2997938D229A5CA01AB481A09F0691F" xlink:to="loc_us-gaap_VehiclesMember_C67407491E4AD01B1FAE481A09F06C31" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_238EF94C39069FBD0A36481A09F08FEE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8CE8BD72E6A215E368AB481A09F0B8D8" xlink:to="loc_us-gaap_RangeAxis_238EF94C39069FBD0A36481A09F08FEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_238EF94C39069FBD0A36481A09F08FEE" xlink:to="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_238EF94C39069FBD0A36481A09F08FEE" xlink:to="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_D496087032AC326B4163481A09F025BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F" xlink:to="loc_us-gaap_MinimumMember_D496087032AC326B4163481A09F025BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_15ACAB52DECD31EF7B7A481A09F07A43" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_B0B64FB1F4FDBE46E745481A09F0509F" xlink:to="loc_us-gaap_MaximumMember_15ACAB52DECD31EF7B7A481A09F07A43" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_E43875A7F4356CAA2285481A09F0FA00" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_518BB1AEF80CC8C5208D481A09F090DB" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_E43875A7F4356CAA2285481A09F0FA00" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfGoodwillDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_6878B447C24F36B59F0B8A5803AB2A8B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_2AA1B42F010CD4B6B0478A5803AAD27C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_6878B447C24F36B59F0B8A5803AB2A8B" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_2AA1B42F010CD4B6B0478A5803AAD27C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_9B67D468257B6584D04B8A5803AAAF98" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_2AA1B42F010CD4B6B0478A5803AAD27C" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_9B67D468257B6584D04B8A5803AAAF98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9B67D468257B6584D04B8A5803AAAF98" xlink:to="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9B67D468257B6584D04B8A5803AAAF98" xlink:to="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmericasMember" xlink:label="loc_us-gaap_AmericasMember_D4AE6BA2CC9D73A162828B3AA1225839" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1" xlink:to="loc_us-gaap_AmericasMember_D4AE6BA2CC9D73A162828B3AA1225839" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalMember" xlink:label="loc_car_InternationalMember_32616509DC38C585FA408A5803AB9A78" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6E9F9BB61C1EFD1436338A5803AA3EF1" xlink:to="loc_car_InternationalMember_32616509DC38C585FA408A5803AB9A78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_D78E854BBF9B9D6E10458A5803AB3889" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_6878B447C24F36B59F0B8A5803AB2A8B" xlink:to="loc_us-gaap_GoodwillGross_D78E854BBF9B9D6E10458A5803AB3889" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_6878B447C24F36B59F0B8A5803AB2A8B" xlink:to="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_76C8CB1B4C1C43E276BE8A5803AB455F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:to="loc_us-gaap_Goodwill_76C8CB1B4C1C43E276BE8A5803AB455F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64BF2FA4434B64678D4C8A5803AB085A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64BF2FA4434B64678D4C8A5803AB085A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_F567DC66D18B1CCB0A1D8A5803AB327E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_F567DC66D18B1CCB0A1D8A5803AB327E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments" xlink:label="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_986C077E03A98AE1A1668A5803ABF860" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_B1F68D77607925210BEB8A5803AB3FF8" xlink:to="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_986C077E03A98AE1A1668A5803ABF860" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfIntangibleAssetsAmortizationExpenseDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_79BEA070EFCF68FAB7FC481A0A229CEA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_AB54EC858842BF764D1F481A0A2220F5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_79BEA070EFCF68FAB7FC481A0A229CEA" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_AB54EC858842BF764D1F481A0A2220F5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D87E5F6BA91A32182729481A0A228EFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_AB54EC858842BF764D1F481A0A2220F5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D87E5F6BA91A32182729481A0A228EFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D87E5F6BA91A32182729481A0A228EFF" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_D87E5F6BA91A32182729481A0A228EFF" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LicensingAgreementsMember" xlink:label="loc_us-gaap_LicensingAgreementsMember_6D3ADE040EB1C60AC24D481A0A22F48B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD" xlink:to="loc_us-gaap_LicensingAgreementsMember_6D3ADE040EB1C60AC24D481A0A22F48B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_2609310311B50939AA6A481A0A227C69" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD" xlink:to="loc_us-gaap_CustomerRelationshipsMember_2609310311B50939AA6A481A0A227C69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_62D9EFF3EA1CA481738E481A0A228E0F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3DCF9135D9E524AA8B5F481A0A22C9AD" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_62D9EFF3EA1CA481738E481A0A228E0F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_9DCCC80A660C23E0A814481A0A226440" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_79BEA070EFCF68FAB7FC481A0A229CEA" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_9DCCC80A660C23E0A814481A0A226440" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfIntangibleAssetsDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems" xlink:label="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_FiniteAndIndefiniteLivedIntangibleAssetsTable" xlink:label="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsTable_BE7EB477606D1F86A4CE768F3F8FC3CC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsTable_BE7EB477606D1F86A4CE768F3F8FC3CC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_61EACA7E0F3BBEFE13A0768F3F8F3FD7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsTable_BE7EB477606D1F86A4CE768F3F8FC3CC" xlink:to="loc_us-gaap_RangeAxis_61EACA7E0F3BBEFE13A0768F3F8F3FD7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_61EACA7E0F3BBEFE13A0768F3F8F3FD7" xlink:to="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_61EACA7E0F3BBEFE13A0768F3F8F3FD7" xlink:to="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_CEE4C640AF26F1CD5895768F3F8F075F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325" xlink:to="loc_us-gaap_MinimumMember_CEE4C640AF26F1CD5895768F3F8F075F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_0C42EB534EBE1BD8AD96768F3F8F69C9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325" xlink:to="loc_us-gaap_MaximumMember_0C42EB534EBE1BD8AD96768F3F8F69C9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageMember" xlink:label="loc_us-gaap_WeightedAverageMember_6184E1968741970F09B1768F3F8F5233" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5717B346402263D1C0A0768F3F8F5325" xlink:to="loc_us-gaap_WeightedAverageMember_6184E1968741970F09B1768F3F8F5233" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_40709D9DA42849427994768F3F8FC05F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsTable_BE7EB477606D1F86A4CE768F3F8FC3CC" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_40709D9DA42849427994768F3F8FC05F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_40709D9DA42849427994768F3F8FC05F" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_40709D9DA42849427994768F3F8FC05F" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillMember" xlink:label="loc_us-gaap_GoodwillMember_630A69D8DF8F42ED7A0E768F3F8FD9E5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC" xlink:to="loc_us-gaap_GoodwillMember_630A69D8DF8F42ED7A0E768F3F8FD9E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TrademarksMember" xlink:label="loc_us-gaap_TrademarksMember_EDC688A05EF8DC22ED07768F3F8F63C8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_6246F746FE499F4ACE17768F3F8F7CBC" xlink:to="loc_us-gaap_TrademarksMember_EDC688A05EF8DC22ED07768F3F8F63C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_794ACD732F36449DE1C6768F3F8F502E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsTable_BE7EB477606D1F86A4CE768F3F8FC3CC" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_794ACD732F36449DE1C6768F3F8F502E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_794ACD732F36449DE1C6768F3F8F502E" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_794ACD732F36449DE1C6768F3F8F502E" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LicensingAgreementsMember" xlink:label="loc_us-gaap_LicensingAgreementsMember_A6198AA0A69B27CF3739768F3F8F7EFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654" xlink:to="loc_us-gaap_LicensingAgreementsMember_A6198AA0A69B27CF3739768F3F8F7EFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_B8544CD4091DA7875C4A768F3F8F0A9A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654" xlink:to="loc_us-gaap_CustomerRelationshipsMember_B8544CD4091DA7875C4A768F3F8F0A9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_71CD03D936840C1EAB72768F3F8FBF06" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CA20D0A49B22AA9720D2768F3F8F2654" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_71CD03D936840C1EAB72768F3F8FBF06" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_40C9B58CFA5F091EBDA1768F3F8FDEB7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_40C9B58CFA5F091EBDA1768F3F8FDEB7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6F37407E5BE3B141FE1D768F3F8FAB08" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6F37407E5BE3B141FE1D768F3F8FAB08" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9BF7E577F6504189183D768F3F8FA5A2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9BF7E577F6504189183D768F3F8FA5A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_EC4A4E1B887477F3755D768F3F8F42F3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_EC4A4E1B887477F3755D768F3F8F42F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_4388C884A77366C8BC5F768F3F8F27B7" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_Goodwill_4388C884A77366C8BC5F768F3F8F27B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_FABE2563A4DC1A2F589A768F3F8FD16C" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_FABE2563A4DC1A2F589A768F3F8FD16C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_914DAAEF1087AC424FCA76B0FF12C9EE" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_FiniteAndIndefiniteLivedIntangibleAssetsLineItems_17BC0C8FFD654AF6D9F0768F3F8F3ABB" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_914DAAEF1087AC424FCA76B0FF12C9EE" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfLongTermDebtDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_0B0D0EE673A3BA60F53F7B87BFAF8AE7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentTable_0B0D0EE673A3BA60F53F7B87BFAF8AE7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_79F14C2DD244D8D583107B87BFAF02E1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0B0D0EE673A3BA60F53F7B87BFAF8AE7" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_79F14C2DD244D8D583107B87BFAF02E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ECB430CD6E300D7F81F47B87BFAFFD32_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_79F14C2DD244D8D583107B87BFAF02E1" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ECB430CD6E300D7F81F47B87BFAFFD32_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ECB430CD6E300D7F81F47B87BFAFFD32" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_79F14C2DD244D8D583107B87BFAF02E1" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ECB430CD6E300D7F81F47B87BFAFFD32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_FC4AE0316B2AE382CE957B87BFAFA0B9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ECB430CD6E300D7F81F47B87BFAFFD32" xlink:to="loc_us-gaap_InterestRateSwapMember_FC4AE0316B2AE382CE957B87BFAFA0B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_DFB1F99D58314F8621B87B87BFAFB0AF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0B0D0EE673A3BA60F53F7B87BFAF8AE7" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_DFB1F99D58314F8621B87B87BFAFB0AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_DFB1F99D58314F8621B87B87BFAFB0AF" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_DFB1F99D58314F8621B87B87BFAFB0AF" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_B819CD038BD583C6018E7B87BFAFC98B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C" xlink:to="loc_us-gaap_SeniorNotesMember_B819CD038BD583C6018E7B87BFAFC98B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_02D36C0E49CAA785C1E77B87BFAFE67E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C" xlink:to="loc_us-gaap_LoansPayableMember_02D36C0E49CAA785C1E77B87BFAFE67E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SeniorNotesandLoansPayableMember" xlink:label="loc_car_SeniorNotesandLoansPayableMember_7F39ACBD0379FCCB37037B87BFAF74BC" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C13022910DEC65243F777B87BFAF467C" xlink:to="loc_car_SeniorNotesandLoansPayableMember_7F39ACBD0379FCCB37037B87BFAF74BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_6B946951A82C3B0E29667B87BFAF600B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0B0D0EE673A3BA60F53F7B87BFAF8AE7" xlink:to="loc_us-gaap_DebtInstrumentAxis_6B946951A82C3B0E29667B87BFAF600B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_6B946951A82C3B0E29667B87BFAF600B" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_6B946951A82C3B0E29667B87BFAF600B" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateSeniorNotesDueDecember2017Member" xlink:label="loc_car_FloatingRateSeniorNotesDueDecember2017Member_0EBC85A3DF86142812147B87BFBE3C29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FloatingRateSeniorNotesDueDecember2017Member_0EBC85A3DF86142812147B87BFBE3C29" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember" xlink:label="loc_car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember_CA1061B8A37BC27C9E6A7B87BFBEAE9D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FloatingRateTermLoanDueMarchTwoThousandNineteenMember_CA1061B8A37BC27C9E6A7B87BFBEAE9D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NineAndThreeOverFourSeniorNotesMember" xlink:label="loc_car_NineAndThreeOverFourSeniorNotesMember_CD8FA2FADA7941DF57297B87BFBEE65C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_NineAndThreeOverFourSeniorNotesMember_CD8FA2FADA7941DF57297B87BFBEE65C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SixEuroDenominatedSeniorNotesMember" xlink:label="loc_car_SixEuroDenominatedSeniorNotesMember_58CECCCEEFA648B3AD1E7B87BFBE4D88" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_SixEuroDenominatedSeniorNotesMember_58CECCCEEFA648B3AD1E7B87BFBE4D88" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember" xlink:label="loc_car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember_3716CF5554E209C8D4757B87BFBEBE60" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FloatingRateTermLoanDueMarchTwoThousandTwentyTwoMember_3716CF5554E209C8D4757B87BFBEBE60" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FiveandOneoverEightSeniorNotesMember" xlink:label="loc_car_FiveandOneoverEightSeniorNotesMember_F2BCAFC69148DF2E28E17B87BFBE87CB" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FiveandOneoverEightSeniorNotesMember_F2BCAFC69148DF2E28E17B87BFBE87CB" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FiveAndOneOverTwoSeniorNotesMember" xlink:label="loc_car_FiveAndOneOverTwoSeniorNotesMember_8EBDB76889CFF954F52B7B87BFBE0B8E" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FiveAndOneOverTwoSeniorNotesMember_8EBDB76889CFF954F52B7B87BFBE0B8E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FourandOneoverEightEuroDenominatedSeniorNotesMember" xlink:label="loc_car_FourandOneoverEightEuroDenominatedSeniorNotesMember_854881DF845DB4C579747B87BFBEA7AB" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FourandOneoverEightEuroDenominatedSeniorNotesMember_854881DF845DB4C579747B87BFBEA7AB" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SixAndThreeOverEightSeniorNotesMember" xlink:label="loc_car_SixAndThreeOverEightSeniorNotesMember_A4195DA4663F616AB0397B87BFBEA8FC" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_SixAndThreeOverEightSeniorNotesMember_A4195DA4663F616AB0397B87BFBEA8FC" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FiveAndOneOverFourSeniorNotesMember" xlink:label="loc_car_FiveAndOneOverFourSeniorNotesMember_3C2764749C9D9EEFCDCE7B87BFBECBF5" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FiveAndOneOverFourSeniorNotesMember_3C2764749C9D9EEFCDCE7B87BFBECBF5" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FourandOneoverTwoEuroDenominatedSeniorNotesMember" xlink:label="loc_car_FourandOneoverTwoEuroDenominatedSeniorNotesMember_5ADBE03B997714A3A1D27B87BFBE90AE" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FourandOneoverTwoEuroDenominatedSeniorNotesMember_5ADBE03B997714A3A1D27B87BFBE90AE" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EightAndOneOverFourSeniorNotesMember" xlink:label="loc_car_EightAndOneOverFourSeniorNotesMember_A3AC3C3E11C13F7299527B87BFBEBFAD" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_EightAndOneOverFourSeniorNotesMember_A3AC3C3E11C13F7299527B87BFBEBFAD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_FourAndSevenOverEightSeniorNotesMember" xlink:label="loc_car_FourAndSevenOverEightSeniorNotesMember_51578E785029CE8FCFAD7B87BFBE5080" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5186A46888302678DDAE7B87BFAF1369" xlink:to="loc_car_FourAndSevenOverEightSeniorNotesMember_51578E785029CE8FCFAD7B87BFBE5080" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8F317FF35B0ADBA74F8B7B87BFBE5D47" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8F317FF35B0ADBA74F8B7B87BFBE5D47" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E61684C6ACCA38A8405C7B87BFBE5408" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E61684C6ACCA38A8405C7B87BFBE5408" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_67C81803A71ABE27515B7B87BFBE9AC8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_67C81803A71ABE27515B7B87BFBE9AC8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_E7ED1E7B1A42BFA601247B87BFBE80F5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_E7ED1E7B1A42BFA601247B87BFBE80F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_0CF0C5A595605B4A103C7B87BFBEAE3E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedPremium_0CF0C5A595605B4A103C7B87BFBEAE3E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAmountOfHedgedItem" xlink:label="loc_us-gaap_DerivativeAmountOfHedgedItem_64CC0561477B38C2D45C7B87BFBE8A5F" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DerivativeAmountOfHedgedItem_64CC0561477B38C2D45C7B87BFBE8A5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_147B785FE95A8C163ECC7B87BFBE7E94" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_147B785FE95A8C163ECC7B87BFBE7E94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShortTermBankLoansAndNotesPayable" xlink:label="loc_us-gaap_ShortTermBankLoansAndNotesPayable_4DFA44362F9255D873F87B87BFBE0AF0" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_ShortTermBankLoansAndNotesPayable_4DFA44362F9255D873F87B87BFBE0AF0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_F3366972F1AAA72441F97B87BFBE8303" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_F3366972F1AAA72441F97B87BFBE8303" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDateDescription" xlink:label="loc_us-gaap_DebtInstrumentMaturityDateDescription_FA9BE966EE645D85A3287B87BFBEDB36" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentMaturityDateDescription_FA9BE966EE645D85A3287B87BFBEDB36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_CCEDB360B7FA3E1F00887B87BFBEBB07" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_CCEDB360B7FA3E1F00887B87BFBEBB07" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLongTermDebt" xlink:label="loc_us-gaap_OtherLongTermDebt_9EAABED9BFD38D444EA77B87BFBEB081" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_OtherLongTermDebt_9EAABED9BFD38D444EA77B87BFBEB081" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_5C16EDD5F6C89A05B7597B87BFBEDE18" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_5C16EDD5F6C89A05B7597B87BFBEDE18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_BBDECA2A9962EEC2DF9E7B87BFBE8568" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtAndCapitalLeaseObligations_BBDECA2A9962EEC2DF9E7B87BFBE8568" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_DF8C3527251F33DCD7767B87BFBEFCC0" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_LongTermDebtCurrent_DF8C3527251F33DCD7767B87BFBEFCC0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_FBEB45637C30C43EF4F27B87BFBECA82" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_FBEB45637C30C43EF4F27B87BFBECA82" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_PercentageOfMarginAggregateInterestRate" xlink:label="loc_car_PercentageOfMarginAggregateInterestRate_87F5C0C655952E03028E7B87BFBE62C0" xlink:type="locator" />
    <link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_car_PercentageOfMarginAggregateInterestRate_87F5C0C655952E03028E7B87BFBE62C0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRepurchaseAmount" xlink:label="loc_us-gaap_DebtInstrumentRepurchaseAmount_E6F95D4A8878E2F459117B87BFBEEA14" xlink:type="locator" />
    <link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentRepurchaseAmount_E6F95D4A8878E2F459117B87BFBEEA14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_AA0B02C329A5F7BDA6447B87BFBE8500" xlink:type="locator" />
    <link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_AA0B02C329A5F7BDA6447B87BFBE8500" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_5AE3AF86410FAE7BC71F7B87BFBE7DE1" xlink:type="locator" />
    <link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_DBD247E01142C414315C7B87BFBE4984" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_5AE3AF86410FAE7BC71F7B87BFBE7DE1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfOtherCurrentAssetsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfPropertyAndEquipmentNetDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfRentExpenseDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ScheduleOfSelectedQuarterlyFinancialDataDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureLineItems" xlink:label="loc_car_IncomeTaxDisclosureLineItems_A7FF4F0CF4AFB4F665648A58015B55A1" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxDisclosureTable" xlink:label="loc_car_IncomeTaxDisclosureTable_6ED93C25BF9E0E73CAAB8A58015A4C8F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_IncomeTaxDisclosureLineItems_A7FF4F0CF4AFB4F665648A58015B55A1" xlink:to="loc_car_IncomeTaxDisclosureTable_6ED93C25BF9E0E73CAAB8A58015A4C8F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_873905DC8AD9A3A0F1768A58015AFBAB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxDisclosureTable_6ED93C25BF9E0E73CAAB8A58015A4C8F" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_873905DC8AD9A3A0F1768A58015AFBAB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_873905DC8AD9A3A0F1768A58015AFBAB" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_873905DC8AD9A3A0F1768A58015AFBAB" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember" xlink:label="loc_car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember_553A34B6334397F7D0CC8A58015A9453" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3" xlink:to="loc_car_ProvisionadjustmentduetoanticipatedrepatriationofforeignearningsMember_553A34B6334397F7D0CC8A58015A9453" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProvisionadjustmentduetocorporatetaxratechangeMember" xlink:label="loc_car_ProvisionadjustmentduetocorporatetaxratechangeMember_FF261591BE7243751B4D8A58015B760D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_6924F6296D03194E8F518A58015A07C3" xlink:to="loc_car_ProvisionadjustmentduetocorporatetaxratechangeMember_FF261591BE7243751B4D8A58015B760D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_881DBCABCD75C878AB678A58015B60F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxDisclosureLineItems_A7FF4F0CF4AFB4F665648A58015B55A1" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_881DBCABCD75C878AB678A58015B60F7" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SegmentInformation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SegmentInformationTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SelectedQuarterlyFinancialData" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SelectedQuarterlyFinancialDataTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationAdditionalInformationDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockOptionsAdditionalInformationDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockOptionsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F5C7ED3E98530A0B0F737B87BF51D088" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F5C7ED3E98530A0B0F737B87BF51D088" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="car-20171231.xsd#car_TypeOfVestingAxis" xlink:label="loc_car_TypeOfVestingAxis_BD13D8540BD9D7F6E8467B87BF51365A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F5C7ED3E98530A0B0F737B87BF51D088" xlink:to="loc_car_TypeOfVestingAxis_BD13D8540BD9D7F6E8467B87BF51365A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_TypeOfVestingDomain" xlink:label="loc_car_TypeOfVestingDomain_32A1C0FB4FBCA0736F197B87BF51E52F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_car_TypeOfVestingAxis_BD13D8540BD9D7F6E8467B87BF51365A" xlink:to="loc_car_TypeOfVestingDomain_32A1C0FB4FBCA0736F197B87BF51E52F_default" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_TypeOfVestingDomain" xlink:label="loc_car_TypeOfVestingDomain_32A1C0FB4FBCA0736F197B87BF51E52F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_car_TypeOfVestingAxis_BD13D8540BD9D7F6E8467B87BF51365A" xlink:to="loc_car_TypeOfVestingDomain_32A1C0FB4FBCA0736F197B87BF51E52F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_F25DC5818CAA20638CDD7B87BF511B45" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F5C7ED3E98530A0B0F737B87BF51D088" xlink:to="loc_us-gaap_AwardTypeAxis_F25DC5818CAA20638CDD7B87BF511B45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_F25DC5818CAA20638CDD7B87BF511B45" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_F25DC5818CAA20638CDD7B87BF511B45" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_2951EC260257BCF147047B87BF51C5E1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_2951EC260257BCF147047B87BF51C5E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_EAC0D1DB2F6C6AB28E607B87BF51BC3C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_FA3432637907F2D4D5897B87BF51A421" xlink:to="loc_us-gaap_PerformanceSharesMember_EAC0D1DB2F6C6AB28E607B87BF51BC3C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_D6D79B0AE686BF0A5CBE7B87BF51A06E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_D6D79B0AE686BF0A5CBE7B87BF51A06E" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NumberOfRestrictedStockUnitsTargetAwardVestedRangeMaximum" xlink:label="loc_car_NumberOfRestrictedStockUnitsTargetAwardVestedRangeMaximum_48A21BC20A231A9957217B87BF51954D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_car_NumberOfRestrictedStockUnitsTargetAwardVestedRangeMaximum_48A21BC20A231A9957217B87BF51954D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_348564E0AAC9CAEF32097B87BF51180F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_348564E0AAC9CAEF32097B87BF51180F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_44BE47E5ED9E6FFB67307B87BF515143" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_44BE47E5ED9E6FFB67307B87BF515143" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_2925762B647F4DDD74487B87BF516E64" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_2925762B647F4DDD74487B87BF516E64" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_85607079B14E8B0D42B57B87BF516C85" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_85607079B14E8B0D42B57B87BF516C85" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_E43F10A26AE55189EE057B87BF510825" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_E43F10A26AE55189EE057B87BF510825" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_52C83D9FD0817BA5C8E67B87BF51847B" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_52C83D9FD0817BA5C8E67B87BF51847B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm" xlink:label="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm_EA2D631449B86905618C7B87BF515063" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_863BF7A8007EB3E7F34F7B87BF510844" xlink:to="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm_EA2D631449B86905618C7B87BF515063" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationAnnualActivityOfStockUnitsAndCashUnitsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F774987D62895B43151E7B87BF61F78E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F774987D62895B43151E7B87BF61F78E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_039EA44F4A4D8B7C8DE37B87BF612DA7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_F774987D62895B43151E7B87BF61F78E" xlink:to="loc_us-gaap_AwardTypeAxis_039EA44F4A4D8B7C8DE37B87BF612DA7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_039EA44F4A4D8B7C8DE37B87BF612DA7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_039EA44F4A4D8B7C8DE37B87BF612DA7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_0D8E55E939FDEAC5572A7B87BF61F557" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_0D8E55E939FDEAC5572A7B87BF61F557" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_9D77FB71DBE1DF032EB47B87BF616794" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_B2DB6FE8482DBE87A0F27B87BF613DD3" xlink:to="loc_us-gaap_PerformanceSharesMember_9D77FB71DBE1DF032EB47B87BF616794" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_F52823DF65313B0D51797B87BF6196DD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_F52823DF65313B0D51797B87BF6196DD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestNumberofSharesOutstanding" xlink:label="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestNumberofSharesOutstanding_5B04EF37390DE27694A27B87BF6177F5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestNumberofSharesOutstanding_5B04EF37390DE27694A27B87BF6177F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_95BAFCE041AC768ADF037B87BF6127F3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_95BAFCE041AC768ADF037B87BF6127F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_BEEB33CE29209776EEA67B87BF618867" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_BEEB33CE29209776EEA67B87BF618867" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_CC3C0FE9CA225FA010437B87BF6199C8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_CC3C0FE9CA225FA010437B87BF6199C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_BCBDF7738E78669CCA877B87BF61957F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_BCBDF7738E78669CCA877B87BF61957F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_57D41387C3D30FC9BC817B87BF614B55" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_57D41387C3D30FC9BC817B87BF614B55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_0465E8292A8A728134B87B87BF6187FA" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_0465E8292A8A728134B87B87BF6187FA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_346F7BEFF7D5A28233367B87BF615077" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_346F7BEFF7D5A28233367B87BF615077" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ACEC3197BACCB90C79E97B87BF61100D" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01927B37BF0A0562E29E7B87BF61D8C2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ACEC3197BACCB90C79E97B87BF61100D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageGrantDateFairValue" xlink:label="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageGrantDateFairValue_10E4B96B23365500E0D77B87BF61573B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageGrantDateFairValue_10E4B96B23365500E0D77B87BF61573B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm" xlink:label="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm_274467DABEB9BD54C7E17B87BF61835F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedtoVestWeightedAverageRemainingContractualTerm_274467DABEB9BD54C7E17B87BF61835F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_6ACA87C03A5BE78069987B87BF619ABA" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_6ACA87C03A5BE78069987B87BF619ABA" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsAggregateIntrinsicValueExpectedtoVest" xlink:label="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsAggregateIntrinsicValueExpectedtoVest_7B7D3FF75CEA7F4671807B87BF61C4E1" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82DE64AC473662A2D5AA7B87BF61041D" xlink:to="loc_car_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsAggregateIntrinsicValueExpectedtoVest_7B7D3FF75CEA7F4671807B87BF61C4E1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationStockUnitValuationAssumptionsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C50D9E50CACA1AE3B0E752F1C4EB7759" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C50D9E50CACA1AE3B0E752F1C4EB7759" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_B12D64D672443C626BDB52F1C4EB1DB9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C50D9E50CACA1AE3B0E752F1C4EB7759" xlink:to="loc_us-gaap_AwardTypeAxis_B12D64D672443C626BDB52F1C4EB1DB9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_B12D64D672443C626BDB52F1C4EB1DB9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_B12D64D672443C626BDB52F1C4EB1DB9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_832C09F017E811646A6D52F1C4EB9E8D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_832C09F017E811646A6D52F1C4EB9E8D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_8EF0BD7677A0C086C299531E4FC3A716" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543C095D44F4D3F1F94552F1C4EB4A7D" xlink:to="loc_us-gaap_PerformanceSharesMember_8EF0BD7677A0C086C299531E4FC3A716" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_DB05945C56AF986E400752F1C4EB8E70" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_DB05945C56AF986E400752F1C4EB8E70" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F573F05F9048EAE1271E52F1C4EB0B6B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F573F05F9048EAE1271E52F1C4EB0B6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_055AAE9413C5F9CD58B952F1C4EB5AF1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_055AAE9413C5F9CD58B952F1C4EB5AF1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_6D04CE5FA2A8FEA03B3A52F1C4EBA4FE" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_6D04CE5FA2A8FEA03B3A52F1C4EBA4FE" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ShareBasedCompensationPercentageInAnnualBaseSalaryMin" xlink:label="loc_car_ShareBasedCompensationPercentageInAnnualBaseSalaryMin_8B857E8A9C90EFF23FB852F1C4EB75DD" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_car_ShareBasedCompensationPercentageInAnnualBaseSalaryMin_8B857E8A9C90EFF23FB852F1C4EB75DD" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ShareBasedCompensationPercentageInAnnualBaseSalaryMax" xlink:label="loc_car_ShareBasedCompensationPercentageInAnnualBaseSalaryMax_7B761D3DA132446E3D1452F1C4EB9604" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C264E3A0B46184E0175B52F1C4EB0F20" xlink:to="loc_car_ShareBasedCompensationPercentageInAnnualBaseSalaryMax_7B761D3DA132446E3D1452F1C4EB9604" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/StockBasedCompensationTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockholdersEquity" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/StockholdersEquityAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_StockholdersEquityLineItems" xlink:label="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_StockholdersEquityTable" xlink:label="loc_car_StockholdersEquityTable_DD3592125C3CED2B970E8A5802B14326" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_car_StockholdersEquityTable_DD3592125C3CED2B970E8A5802B14326" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_87517B4E15BBF79826598A5802B293C6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_StockholdersEquityTable_DD3592125C3CED2B970E8A5802B14326" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_87517B4E15BBF79826598A5802B293C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_95702FEC79A69E43F70D8A5802B2C6DC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_87517B4E15BBF79826598A5802B293C6" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_95702FEC79A69E43F70D8A5802B2C6DC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_95702FEC79A69E43F70D8A5802B2C6DC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_87517B4E15BBF79826598A5802B293C6" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_95702FEC79A69E43F70D8A5802B2C6DC" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_CorporateInterestExpenseMember" xlink:label="loc_car_CorporateInterestExpenseMember_7FA117037843D7FA2CD28A5802B24E04" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_95702FEC79A69E43F70D8A5802B2C6DC" xlink:to="loc_car_CorporateInterestExpenseMember_7FA117037843D7FA2CD28A5802B24E04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_67E06D16AD2D00E03CD08A5802B25034" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_StockholdersEquityTable_DD3592125C3CED2B970E8A5802B14326" xlink:to="loc_us-gaap_HedgingDesignationAxis_67E06D16AD2D00E03CD08A5802B25034" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_5F9B41B4C168CCEA1A628A5802B2BD5A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_67E06D16AD2D00E03CD08A5802B25034" xlink:to="loc_us-gaap_HedgingDesignationDomain_5F9B41B4C168CCEA1A628A5802B2BD5A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_5F9B41B4C168CCEA1A628A5802B2BD5A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_67E06D16AD2D00E03CD08A5802B25034" xlink:to="loc_us-gaap_HedgingDesignationDomain_5F9B41B4C168CCEA1A628A5802B2BD5A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_A3B1A50F03255152054A8A5802B26B5F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_5F9B41B4C168CCEA1A628A5802B2BD5A" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_A3B1A50F03255152054A8A5802B26B5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_82EA11DE74E8F8A2EF458A5802B2C83F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_StockholdersEquityTable_DD3592125C3CED2B970E8A5802B14326" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_82EA11DE74E8F8A2EF458A5802B2C83F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_64D686AAB19A27BE7D428A5802B2165D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_82EA11DE74E8F8A2EF458A5802B2C83F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_64D686AAB19A27BE7D428A5802B2165D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_64D686AAB19A27BE7D428A5802B2165D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_82EA11DE74E8F8A2EF458A5802B2C83F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_64D686AAB19A27BE7D428A5802B2165D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_76EBFBB69E34762E3BDD8A5802B332B0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_64D686AAB19A27BE7D428A5802B2165D" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_76EBFBB69E34762E3BDD8A5802B332B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_E2164681D757F14B26C88A5802B35600" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_dei_EntityPublicFloat_E2164681D757F14B26C88A5802B35600" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_4A6775AC5E7429AC33A28A5802B31296" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_4A6775AC5E7429AC33A28A5802B31296" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_C535CDC14497591B8B138A5802B3D2C7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_C535CDC14497591B8B138A5802B3D2C7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_75C097B44AD2DA0C61BF8A5802B3A66C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_75C097B44AD2DA0C61BF8A5802B3A66C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_5D1DD69ABD0574CDA2AA8A5802B3B2CE" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_5D1DD69ABD0574CDA2AA8A5802B3B2CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_69A4102A5A704729495C8A5802B368FC" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_69A4102A5A704729495C8A5802B368FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_B8E8F3E959111C3D768D8A5802B4A9DC" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax_B8E8F3E959111C3D768D8A5802B4A9DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_5C3B6EA99C57468D3FE18A5802B4E45B" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_5C3B6EA99C57468D3FE18A5802B4E45B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_4D1CE7528956E4B512A48A5802B4998E" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_4D1CE7528956E4B512A48A5802B4998E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_0470D4F953217EFD51208A5802B4B1F7" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_StockholdersEquityLineItems_A47F893094A069751DA18A5802B30139" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_0470D4F953217EFD51208A5802B4B1F7" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/StockholdersEquityTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SubsequentEvents" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SubsequentEventsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_3F082E4A5243827ED60877A4EF88D3F1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_DA6F43FBE2A0987E18B077A4EF8802DD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_3F082E4A5243827ED60877A4EF88D3F1" xlink:to="loc_us-gaap_SubsequentEventTable_DA6F43FBE2A0987E18B077A4EF8802DD" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_47208F2AED7EE0A0104177A4EF88BAFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_DA6F43FBE2A0987E18B077A4EF8802DD" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_47208F2AED7EE0A0104177A4EF88BAFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_21E52814AEAF93B11EAE77A4EF882314_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_47208F2AED7EE0A0104177A4EF88BAFF" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_21E52814AEAF93B11EAE77A4EF882314_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_21E52814AEAF93B11EAE77A4EF882314" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_47208F2AED7EE0A0104177A4EF88BAFF" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_21E52814AEAF93B11EAE77A4EF882314" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_F81F0957D8A1CD9EEF1B77A4EF88A981" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_21E52814AEAF93B11EAE77A4EF882314" xlink:to="loc_us-gaap_SubsequentEventMember_F81F0957D8A1CD9EEF1B77A4EF88A981" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants_27756B8AD299BB1DDCAD77A4EF8987C6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_3F082E4A5243827ED60877A4EF88D3F1" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants_27756B8AD299BB1DDCAD77A4EF8987C6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfAssumptionsUsedToDeterminePensionObligationsAndPensionCostsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DFA0DC462A528B1F3F247B87BF420CAD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DFA0DC462A528B1F3F247B87BF420CAD" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_E54BEBE1F8ABA9835FC17B87BF424AD0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DFA0DC462A528B1F3F247B87BF420CAD" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_E54BEBE1F8ABA9835FC17B87BF424AD0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_E54BEBE1F8ABA9835FC17B87BF424AD0" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_E54BEBE1F8ABA9835FC17B87BF424AD0" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="loc_us-gaap_DomesticPlanMember_94062E1F8A4FB539994F7B87BF42EC28" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E" xlink:to="loc_us-gaap_DomesticPlanMember_94062E1F8A4FB539994F7B87BF42EC28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_CCFBD83D5F8FDF8043627B87BF42675A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3C863D274708C3E0FFBE7B87BF422F1E" xlink:to="loc_us-gaap_ForeignPlanMember_CCFBD83D5F8FDF8043627B87BF42675A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_5A0D8EC60750AB5EF0C07B87BF4280D9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DFA0DC462A528B1F3F247B87BF420CAD" xlink:to="loc_us-gaap_RangeAxis_5A0D8EC60750AB5EF0C07B87BF4280D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_5A0D8EC60750AB5EF0C07B87BF4280D9" xlink:to="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_5A0D8EC60750AB5EF0C07B87BF4280D9" xlink:to="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_41D25EECEA17F3DFF4887B87BF42DEEE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061" xlink:to="loc_us-gaap_MaximumMember_41D25EECEA17F3DFF4887B87BF42DEEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_9C46176AD2DCE515A0DD7B87BF42F6E3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5A284F5422466509ACCC7B87BF42A061" xlink:to="loc_us-gaap_MinimumMember_9C46176AD2DCE515A0DD7B87BF42F6E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9572BDAFDFA9882A4EA27B87BF429318" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DFA0DC462A528B1F3F247B87BF420CAD" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9572BDAFDFA9882A4EA27B87BF429318" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9572BDAFDFA9882A4EA27B87BF429318" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9572BDAFDFA9882A4EA27B87BF429318" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtSecuritiesMember" xlink:label="loc_us-gaap_DebtSecuritiesMember_B19D38AB9F6E714ADE7F7B87BF42EB9B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41" xlink:to="loc_us-gaap_DebtSecuritiesMember_B19D38AB9F6E714ADE7F7B87BF42EB9B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_5FBA0023230B08AF17917B87BF420F8B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_7D63FF3A967491EAD1C67B87BF429F41" xlink:to="loc_us-gaap_EquitySecuritiesMember_5FBA0023230B08AF17917B87BF420F8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_4E9282CF5484931351D57B87BF422BE7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_4E9282CF5484931351D57B87BF422BE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanTargetAllocationPercentage_16CAB2A357A59A319C697B87BF42F24B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_DefinedBenefitPlanTargetAllocationPercentage_16CAB2A357A59A319C697B87BF42F24B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_297C0B78480DC5D9BC537B87BF42CD36" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_297C0B78480DC5D9BC537B87BF42CD36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_82989C42D4E4E8A69E167B87BF42E6F6" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_82989C42D4E4E8A69E167B87BF42E6F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_323575F4BE354D6D83F27B87BF427D5A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8CEA09CA0945B2134CF17B87BF42622C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_323575F4BE354D6D83F27B87BF427D5A" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfChangesToRestructuringRelatedLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_AEB7447DFE1C9637D9AF7B87C02CD299" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF850BA4A4A4B3D9F1BB7B87C02C0A16" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_AEB7447DFE1C9637D9AF7B87C02CD299" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF850BA4A4A4B3D9F1BB7B87C02C0A16" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_89C9737DEF3B7C5EF4297B87C02C0533" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF850BA4A4A4B3D9F1BB7B87C02C0A16" xlink:to="loc_us-gaap_RestructuringPlanAxis_89C9737DEF3B7C5EF4297B87C02C0533" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_89C9737DEF3B7C5EF4297B87C02C0533" xlink:to="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_89C9737DEF3B7C5EF4297B87C02C0533" xlink:to="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2011AvisEuropeRestructuringMember" xlink:label="loc_car_A2011AvisEuropeRestructuringMember_102FC4794EEB6F350C947B87C02C1D9C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:to="loc_car_A2011AvisEuropeRestructuringMember_102FC4794EEB6F350C947B87C02C1D9C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2018TruckRestructuringMember" xlink:label="loc_car_A2018TruckRestructuringMember_3D6CEBE91E79DA5D23107B87C02C50A8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:to="loc_car_A2018TruckRestructuringMember_3D6CEBE91E79DA5D23107B87C02C50A8" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_T17RestructuringMember" xlink:label="loc_car_T17RestructuringMember_7BFB2F3F2366C98A19457B87C02C87E0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:to="loc_car_T17RestructuringMember_7BFB2F3F2366C98A19457B87C02C87E0" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2014T15RestructuringMember" xlink:label="loc_car_A2014T15RestructuringMember_C5EC3FD699DC28EB452A7B87C02CD79C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:to="loc_car_A2014T15RestructuringMember_C5EC3FD699DC28EB452A7B87C02CD79C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_A2015AcquisitionIntegrationMember" xlink:label="loc_car_A2015AcquisitionIntegrationMember_B9DF76EC0332017EE16F7B87C02CDF82" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_51268A14F117C11F8E257B87C02C22E3" xlink:to="loc_car_A2015AcquisitionIntegrationMember_B9DF76EC0332017EE16F7B87C02CDF82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_C87E373F249BB753BC177B87C02CAF5B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF850BA4A4A4B3D9F1BB7B87C02C0A16" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_C87E373F249BB753BC177B87C02CAF5B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_C87E373F249BB753BC177B87C02CAF5B" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_C87E373F249BB753BC177B87C02CAF5B" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="loc_us-gaap_EmployeeSeveranceMember_13FDCEABE06D1758E4D57B87C02C298E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD" xlink:to="loc_us-gaap_EmployeeSeveranceMember_13FDCEABE06D1758E4D57B87C02C298E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FacilityClosingMember" xlink:label="loc_us-gaap_FacilityClosingMember_F48E28050C86DBEF60B17B87C02CCC3F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD" xlink:to="loc_us-gaap_FacilityClosingMember_F48E28050C86DBEF60B17B87C02CCC3F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherRestructuringMember" xlink:label="loc_us-gaap_OtherRestructuringMember_7576EEC1AFB5E9B97A6C7B87C02C386D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_02871055B5467B6BCDC77B87C02CD8BD" xlink:to="loc_us-gaap_OtherRestructuringMember_7576EEC1AFB5E9B97A6C7B87C02C386D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_38A8EB7DAABB428F5B7D7B87C02CF728" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF850BA4A4A4B3D9F1BB7B87C02C0A16" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_38A8EB7DAABB428F5B7D7B87C02CF728" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_38A8EB7DAABB428F5B7D7B87C02CF728" xlink:to="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_38A8EB7DAABB428F5B7D7B87C02CF728" xlink:to="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmericasMember" xlink:label="loc_us-gaap_AmericasMember_83A61D01A5018C95D7487B87C02CD209" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F" xlink:to="loc_us-gaap_AmericasMember_83A61D01A5018C95D7487B87C02CD209" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalMember" xlink:label="loc_car_InternationalMember_88026CF3C66AFA288A6E7B87C02CA020" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8C147C9A0CE1B5FB0ED17B87C02C953F" xlink:to="loc_car_InternationalMember_88026CF3C66AFA288A6E7B87C02CA020" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_E2878C853172ACCAABFC7B87C02C5AD7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_AEB7447DFE1C9637D9AF7B87C02CD299" xlink:to="loc_us-gaap_RestructuringReserve_E2878C853172ACCAABFC7B87C02C5AD7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="loc_us-gaap_RestructuringCharges_96302F8A2CC5B8A144C77B87C02CD9E1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_AEB7447DFE1C9637D9AF7B87C02CD299" xlink:to="loc_us-gaap_RestructuringCharges_96302F8A2CC5B8A144C77B87C02CD9E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="loc_us-gaap_PaymentsForRestructuring_ABCF2EB23888A8E6F1957B87C02C5E91" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_AEB7447DFE1C9637D9AF7B87C02CD299" xlink:to="loc_us-gaap_PaymentsForRestructuring_ABCF2EB23888A8E6F1957B87C02C5E91" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfDefinedBenefitPensionPlansAssetsFairValueDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9BDBF38FE9FA2160202E7B87BF321CBC" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_28E040679EA081D7BE997B87BF32B506" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9BDBF38FE9FA2160202E7B87BF321CBC" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_28E040679EA081D7BE997B87BF32B506" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9939D40ADA8B402EE8287B87BF32F9F8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_28E040679EA081D7BE997B87BF32B506" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9939D40ADA8B402EE8287B87BF32F9F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9939D40ADA8B402EE8287B87BF32F9F8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9939D40ADA8B402EE8287B87BF32F9F8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_28476F0B9A608B26775E7B87BF329796" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_28476F0B9A608B26775E7B87BF329796" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_5356A17E23A43F2054E17B87BF328DD0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F9A5D40B088A94A6155A7B87BF32A6C3" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_5356A17E23A43F2054E17B87BF328DD0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_27328458EE76D914CBDF7B87BF320A1C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_28E040679EA081D7BE997B87BF32B506" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_27328458EE76D914CBDF7B87BF320A1C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_27328458EE76D914CBDF7B87BF320A1C" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_27328458EE76D914CBDF7B87BF320A1C" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_140EBC4DFF8582776BA87B87BF32155C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_140EBC4DFF8582776BA87B87BF32155C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DomesticStockMember" xlink:label="loc_car_DomesticStockMember_1DCD983CC4D55BDFC4237B87BF328E8B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_car_DomesticStockMember_1DCD983CC4D55BDFC4237B87BF328E8B" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalStockMember" xlink:label="loc_car_InternationalStockMember_662BAB607563FD8A39F87B87BF3242B3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_car_InternationalStockMember_662BAB607563FD8A39F87B87BF3242B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RealEstateMember" xlink:label="loc_us-gaap_RealEstateMember_826E6FD8D81F52AD1CC27B87BF323D7A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_us-gaap_RealEstateMember_826E6FD8D81F52AD1CC27B87BF323D7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_6732B591E40FAEB1C1CB7B87BF326C42" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_6732B591E40FAEB1C1CB7B87BF326C42" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_1B14293D0FAE4E25BFED7B87BF32CFDF" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_1B14293D0FAE4E25BFED7B87BF32CFDF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_879F459E5C7AFE000FBD7B87BF32B6E9" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B00EA72D33ECE4417BBA7B87BF32877A" xlink:to="loc_us-gaap_OtherAssetsMember_879F459E5C7AFE000FBD7B87BF32B6E9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6108EFB944009C937CCE7B87BF326A67" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9BDBF38FE9FA2160202E7B87BF321CBC" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6108EFB944009C937CCE7B87BF326A67" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfFundedStatusOfPensionPlansDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfGeographicSegmentInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_319CDC19EF41FB1870E9481A0A54C66E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_319CDC19EF41FB1870E9481A0A54C66E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_40961672C2F52C2C1DC3481A0A5464B2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_319CDC19EF41FB1870E9481A0A54C66E" xlink:to="loc_us-gaap_StatementGeographicalAxis_40961672C2F52C2C1DC3481A0A5464B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis_40961672C2F52C2C1DC3481A0A5464B2" xlink:to="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis_40961672C2F52C2C1DC3481A0A5464B2" xlink:to="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_F6DBB90C827B4B93ABFD481A0A542F53" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45" xlink:to="loc_country_US_F6DBB90C827B4B93ABFD481A0A542F53" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AllOtherCountriesMember" xlink:label="loc_car_AllOtherCountriesMember_9C4E115CE227D0DF22A8481A0A547936" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_F4A1A68D648C6C8030E0481A0A545A45" xlink:to="loc_car_AllOtherCountriesMember_9C4E115CE227D0DF22A8481A0A547936" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_A415FCF5727474EA775B481A0A549F22" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:to="loc_us-gaap_SalesRevenueServicesNet_A415FCF5727474EA775B481A0A549F22" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram" xlink:label="loc_car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram_D7B4A60A67AD492B501F481A0A545C26" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:to="loc_car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram_D7B4A60A67AD492B501F481A0A545C26" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AssetsUnderVehiclePrograms" xlink:label="loc_car_AssetsUnderVehiclePrograms_685B9BFE3A5D19F72932481A0A545E30" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:to="loc_car_AssetsUnderVehiclePrograms_685B9BFE3A5D19F72932481A0A545E30" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NoncurrentAssets" xlink:label="loc_us-gaap_NoncurrentAssets_DC78313740D0DFAD6590481A0A544D4D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_61473A7F022F9665BF5A481A0A5411A0" xlink:to="loc_us-gaap_NoncurrentAssets_DC78313740D0DFAD6590481A0A544D4D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfNetPeriodicBenefitCostDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSegmentsInformationDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_98D33323706603F718117B87BEE4755F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_98D33323706603F718117B87BEE4755F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_F1D3FEEACE90F6C9C9017B87BEE4B9B0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_98D33323706603F718117B87BEE4755F" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_F1D3FEEACE90F6C9C9017B87BEE4B9B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_931338699CE5C8023B567B87BEE4B941_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_F1D3FEEACE90F6C9C9017B87BEE4B9B0" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_931338699CE5C8023B567B87BEE4B941_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_931338699CE5C8023B567B87BEE4B941" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_F1D3FEEACE90F6C9C9017B87BEE4B9B0" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_931338699CE5C8023B567B87BEE4B941" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AcquisitionRelatedCostsMember" xlink:label="loc_us-gaap_AcquisitionRelatedCostsMember_4D60B754D136A6F49D287B87BEE49164" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_931338699CE5C8023B567B87BEE4B941" xlink:to="loc_us-gaap_AcquisitionRelatedCostsMember_4D60B754D136A6F49D287B87BEE49164" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_D06DA63CF39E1A7A08C77B87BEE41E5A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_98D33323706603F718117B87BEE4755F" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_D06DA63CF39E1A7A08C77B87BEE41E5A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D06DA63CF39E1A7A08C77B87BEE41E5A" xlink:to="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D06DA63CF39E1A7A08C77B87BEE41E5A" xlink:to="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmericasMember" xlink:label="loc_us-gaap_AmericasMember_14D57C80A3AFF8637EEA7B87BEE41EAA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108" xlink:to="loc_us-gaap_AmericasMember_14D57C80A3AFF8637EEA7B87BEE41EAA" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_InternationalMember" xlink:label="loc_car_InternationalMember_EF459F971809BB52961E7B87BEF401A9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108" xlink:to="loc_car_InternationalMember_EF459F971809BB52961E7B87BEF401A9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CorporateAndOtherMember" xlink:label="loc_us-gaap_CorporateAndOtherMember_01B4ACFDDA48423C5A867B87BEF480D2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3BE8F833C47EC6FE75977B87BEE45108" xlink:to="loc_us-gaap_CorporateAndOtherMember_01B4ACFDDA48423C5A867B87BEF480D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_8E0E354033EFD4EB7C777B87BEF41702" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_us-gaap_SalesRevenueServicesNet_8E0E354033EFD4EB7C777B87BEF41702" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfServicesDepreciation" xlink:label="loc_us-gaap_CostOfServicesDepreciation_B97C5E0305889CC3DEA77B87BEF4F987" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_us-gaap_CostOfServicesDepreciation_B97C5E0305889CC3DEA77B87BEF4F987" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleInterestNet" xlink:label="loc_car_VehicleInterestNet_EA64FE19F4489BF38EF37B87BEF48084" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_VehicleInterestNet_EA64FE19F4489BF38EF37B87BEF48084" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AdjustedEarningsBeforeIncomeDepreciationAndAmortization" xlink:label="loc_car_AdjustedEarningsBeforeIncomeDepreciationAndAmortization_8633EA655552EAD80C267B87BEF48844" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_AdjustedEarningsBeforeIncomeDepreciationAndAmortization_8633EA655552EAD80C267B87BEF48844" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NonVehicleRelatedDepreciationAndAmortization" xlink:label="loc_car_NonVehicleRelatedDepreciationAndAmortization_91B4ADB9994A7784E7527B87BEF4B87A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_NonVehicleRelatedDepreciationAndAmortization_91B4ADB9994A7784E7527B87BEF4B87A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram" xlink:label="loc_car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram_885CA54E4B5F1B2612A67B87BEF40360" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_SegmentAssetsExclusiveOfAssetsUnderVehicleProgram_885CA54E4B5F1B2612A67B87BEF40360" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_AssetsUnderVehiclePrograms" xlink:label="loc_car_AssetsUnderVehiclePrograms_3826728AFC1847E1B34E7B87BEF405C6" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_AssetsUnderVehiclePrograms_3826728AFC1847E1B34E7B87BEF405C6" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_CapitalExpenditureExcludingVehicles" xlink:label="loc_car_CapitalExpenditureExcludingVehicles_1340F2D1C0AA0EA947FA7B87BEF45077" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_8992225C1F9EC91CC4537B87BEF408E8" xlink:to="loc_car_CapitalExpenditureExcludingVehicles_1340F2D1C0AA0EA947FA7B87BEF45077" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_SummaryOfSignificantAccountingPoliciesLineItems" xlink:label="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_SummaryOfSignificantAccountingPoliciesTable" xlink:label="loc_car_SummaryOfSignificantAccountingPoliciesTable_FCB5C6F8E2EE07FD5B6F8A5804BFF79D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_SummaryOfSignificantAccountingPoliciesTable_FCB5C6F8E2EE07FD5B6F8A5804BFF79D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_4ECAB3C52EF201FC02A28A5804BF7B1A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesTable_FCB5C6F8E2EE07FD5B6F8A5804BFF79D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_4ECAB3C52EF201FC02A28A5804BF7B1A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5F3B2AD55EA03D9331A08A5804BFF300_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_4ECAB3C52EF201FC02A28A5804BF7B1A" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5F3B2AD55EA03D9331A08A5804BFF300_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5F3B2AD55EA03D9331A08A5804BFF300" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_4ECAB3C52EF201FC02A28A5804BF7B1A" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5F3B2AD55EA03D9331A08A5804BFF300" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_B18BED9E012FE7EC4BEC8A5804BF35E3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesTable_FCB5C6F8E2EE07FD5B6F8A5804BFF79D" xlink:to="loc_us-gaap_RangeAxis_B18BED9E012FE7EC4BEC8A5804BF35E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_B18BED9E012FE7EC4BEC8A5804BF35E3" xlink:to="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_B18BED9E012FE7EC4BEC8A5804BF35E3" xlink:to="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_4880C453CF585A7C329C8A5804C0E200" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD" xlink:to="loc_us-gaap_MaximumMember_4880C453CF585A7C329C8A5804C0E200" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_7F7FDB101119DCF3DF788A5804C0FE61" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_01F55F270096E8EDAB1A8A5804BF5DCD" xlink:to="loc_us-gaap_MinimumMember_7F7FDB101119DCF3DF788A5804C0FE61" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_C08885B63016203CC6B58A5804C012FF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_C08885B63016203CC6B58A5804C012FF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalizedComputerSoftwareNet" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareNet_F3BD862039336C0708198A5804C01518" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareNet_F3BD862039336C0708198A5804C01518" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_VehicleInterestIncome" xlink:label="loc_car_VehicleInterestIncome_37608383341C7C124C218A5804C02F21" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_VehicleInterestIncome_37608383341C7C124C218A5804C02F21" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdvertisingExpense" xlink:label="loc_us-gaap_AdvertisingExpense_16D207575EF5221122A48A5804C0DDC3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_AdvertisingExpense_16D207575EF5221122A48A5804C0DDC3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_2427DCB37A84BA5AC4A28A5804C06D0C" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_2427DCB37A84BA5AC4A28A5804C06D0C" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_RetainedRisksOfLiabilities" xlink:label="loc_car_RetainedRisksOfLiabilities_9529E54A14C0A15CAEAC8A5804C029EA" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_RetainedRisksOfLiabilities_9529E54A14C0A15CAEAC8A5804C029EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_48483704713303AE43378A5804C0C740" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_48483704713303AE43378A5804C0C740" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_156D8787FA90562B063B8A5804C14246" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_156D8787FA90562B063B8A5804C14246" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_F04B1B924E2A8BD5D62B8A5804C688A8" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_F04B1B924E2A8BD5D62B8A5804C688A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_2645662E92C10D7C42608A5804C6D87D" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_2645662E92C10D7C42608A5804C6D87D" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_BusinessCombinationContingentConsiderationLiabilityFavorableCurrencyExchangeRateMovements" xlink:label="loc_car_BusinessCombinationContingentConsiderationLiabilityFavorableCurrencyExchangeRateMovements_22EB6840AC8C73A6F8CD8A5804C616B5" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_BusinessCombinationContingentConsiderationLiabilityFavorableCurrencyExchangeRateMovements_22EB6840AC8C73A6F8CD8A5804C616B5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_4E7FE7B54049D6EA8EAF8A5804C6AC49" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_4E7FE7B54049D6EA8EAF8A5804C6AC49" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_EmployeeServiceShareBasedCompensationIncrementalTaxBenefitToBeRealizedFromExerciseOfStockAwards" xlink:label="loc_car_EmployeeServiceShareBasedCompensationIncrementalTaxBenefitToBeRealizedFromExerciseOfStockAwards_619CEA40B83C8227CDC18A5804C68A0A" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_EmployeeServiceShareBasedCompensationIncrementalTaxBenefitToBeRealizedFromExerciseOfStockAwards_619CEA40B83C8227CDC18A5804C68A0A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_3C9970FDD7C9677AF30F8A5804C6BBA1" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_3C9970FDD7C9677AF30F8A5804C6BBA1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInCustomerLoyaltyProgramLiability" xlink:label="loc_us-gaap_IncreaseDecreaseInCustomerLoyaltyProgramLiability_11878F898DF2D717D1C68A5804C79743" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_us-gaap_IncreaseDecreaseInCustomerLoyaltyProgramLiability_11878F898DF2D717D1C68A5804C79743" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_IncreaseDecreaseinCustomerLoyaltyProgramLiabilityNetofTax" xlink:label="loc_car_IncreaseDecreaseinCustomerLoyaltyProgramLiabilityNetofTax_1C063BE6300D92013A0A8A5804C76461" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_SummaryOfSignificantAccountingPoliciesLineItems_AEC15009600B5B67E7BD8A5804C06E4A" xlink:to="loc_car_IncreaseDecreaseinCustomerLoyaltyProgramLiabilityNetofTax_1C063BE6300D92013A0A8A5804C76461" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesCashFlowsReconciliation201618Tables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesReconciliationOfCashAndCashEquivalentsAsu201618Tables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesRestrictedCashAdjustmentDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_0B5E2E9616E95B1F327F77932107448D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_0B5E2E9616E95B1F327F77932107448D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_C1AB026D92198B41148377932107D920" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_0B5E2E9616E95B1F327F77932107448D" xlink:to="loc_us-gaap_StatementScenarioAxis_C1AB026D92198B41148377932107D920" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_C1AB026D92198B41148377932107D920" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_C1AB026D92198B41148377932107D920" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember_A1CAF4A74C71C17E17CE779321078ECA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember_A1CAF4A74C71C17E17CE779321078ECA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="loc_us-gaap_RestatementAdjustmentMember_D2BB54AE72A311CF269077932107A659" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_F9D8CE84C8B57C2D7307779321077A29" xlink:to="loc_us-gaap_RestatementAdjustmentMember_D2BB54AE72A311CF269077932107A659" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_DecreaseIncreaseInProgramCash" xlink:label="loc_car_DecreaseIncreaseInProgramCash_114236FD0A4DE59D8AFB7793210810E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_car_DecreaseIncreaseInProgramCash_114236FD0A4DE59D8AFB7793210810E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_BBEF0679CD33056DB5E37793210841D0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_BBEF0679CD33056DB5E37793210841D0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0C28A5B931D33C021AB977932108CD0B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0C28A5B931D33C021AB977932108CD0B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_31329091DEDE88F20F5F77932108E4B7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_31329091DEDE88F20F5F77932108E4B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_680DFB0C22C9BA93E1587793210816DC" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_680DFB0C22C9BA93E1587793210816DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_DB4B561A17DAA85C2761779321082D9A" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_DB4B561A17DAA85C2761779321082D9A" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ProgramCash" xlink:label="loc_car_ProgramCash_4000E4DF1AED64032D4277932108CFB9" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_car_ProgramCash_4000E4DF1AED64032D4277932108CFB9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_CE6E8184FA92668320A877932108FC3D" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_CE6E8184FA92668320A877932108FC3D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_A623DF94660E58F5F5E8779321082AD5" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_0126AE76701457AE3D5977932107E2CF" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_A623DF94660E58F5F5E8779321082AD5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/UnrecognizedTaxBenefitsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxesLineItems" xlink:label="loc_car_IncomeTaxesLineItems_061C68C2DD6146E09F1F765D0C9EE058" xlink:type="locator" />
    <link:loc xlink:href="car-20171231.xsd#car_IncomeTaxesTable" xlink:label="loc_car_IncomeTaxesTable_4734DD4032780E09AF78765D0C9E70F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_car_IncomeTaxesLineItems_061C68C2DD6146E09F1F765D0C9EE058" xlink:to="loc_car_IncomeTaxesTable_4734DD4032780E09AF78765D0C9E70F7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_5F3CEC95A22E461E19F6765D0C9EE09C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_car_IncomeTaxesTable_4734DD4032780E09AF78765D0C9E70F7" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_5F3CEC95A22E461E19F6765D0C9EE09C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_8F8949164CDBC246A6A9765D0C9ECE48_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_5F3CEC95A22E461E19F6765D0C9EE09C" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_8F8949164CDBC246A6A9765D0C9ECE48_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_8F8949164CDBC246A6A9765D0C9ECE48" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_5F3CEC95A22E461E19F6765D0C9EE09C" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_8F8949164CDBC246A6A9765D0C9ECE48" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_NonAvisBudgetCarRentalTaxContingenciesMember" xlink:label="loc_car_NonAvisBudgetCarRentalTaxContingenciesMember_E3E1FC8572735DDBCB7F765D0C9E8BAB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_8F8949164CDBC246A6A9765D0C9ECE48" xlink:to="loc_car_NonAvisBudgetCarRentalTaxContingenciesMember_E3E1FC8572735DDBCB7F765D0C9E8BAB" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_Unrecognizedtaxbenefitsnoncurrentincometaxespayable" xlink:label="loc_car_Unrecognizedtaxbenefitsnoncurrentincometaxespayable_A68CE5F5CADF71107891765D0C9E7BF6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_061C68C2DD6146E09F1F765D0C9EE058" xlink:to="loc_car_Unrecognizedtaxbenefitsnoncurrentincometaxespayable_A68CE5F5CADF71107891765D0C9E7BF6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_8238E0C43ADCC9D4A3BF765D0C9EBA4A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_061C68C2DD6146E09F1F765D0C9EE058" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_8238E0C43ADCC9D4A3BF765D0C9EBA4A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_9494E7CB49F2721F77DB765D0C9EA1E2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_car_IncomeTaxesLineItems_061C68C2DD6146E09F1F765D0C9EE058" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_9494E7CB49F2721F77DB765D0C9EA1E2" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/UnrecognizedTaxBenefitsDetail" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ValuationAndQualifyingAccounts" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/ValuationAndQualifyingAccountsDetail" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:label="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:label="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable_EA5461DA194E051906517B2853584348" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:to="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable_EA5461DA194E051906517B2853584348" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_3A6FD6A4D4B0AD927C0F7B285358AEB8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable_EA5461DA194E051906517B2853584348" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_3A6FD6A4D4B0AD927C0F7B285358AEB8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_3A6FD6A4D4B0AD927C0F7B285358AEB8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_3A6FD6A4D4B0AD927C0F7B285358AEB8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsMember" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsMember_7D7DFB7AB82A7334C8587B285358F690" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsMember_7D7DFB7AB82A7334C8587B285358F690" xlink:type="arc" />
    <link:loc xlink:href="car-20171231.xsd#car_ValuationAllowanceOfTaxAssetsMember" xlink:label="loc_car_ValuationAllowanceOfTaxAssetsMember_6D21091B7D4EABF584037B2853585CE6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_B402F1D3BDBE6F9CC4B67B285358D074" xlink:to="loc_car_ValuationAllowanceOfTaxAssetsMember_6D21091B7D4EABF584037B2853585CE6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_463763D3AA9130CE40FD7B28535808BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_463763D3AA9130CE40FD7B28535808BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_F28A72E5CDFF82EE65347B285358B1A1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_F28A72E5CDFF82EE65347B285358B1A1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesAdjustments" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesAdjustments_DB72482DAB1F6909B1B37B2853588D6E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesAdjustments_DB72482DAB1F6909B1B37B2853588D6E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_F9A410CC677EACF66C007B28535812A1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_1DD9ADB3D215A9DD7F7D7B28535893C3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_F9A410CC677EACF66C007B28535812A1" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.avis.com/role/VehicleRentalActivities" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.avis.com/role/VehicleRentalActivitiesTables" xlink:type="extended" />
</link:linkbase>
