<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated by Fujitsu Interstage XWand B0160 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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:t1="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:roleRef roleURI="http://autobytel.com/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="abtl-20111231.xsd#DocumentAndEntityInformation"/>
  <link:roleRef roleURI="http://autobytel.com/role/ScheduleIiValuationAndQualifyingAccounts" xlink:type="simple" xlink:href="abtl-20111231.xsd#ScheduleIiValuationAndQualifyingAccounts"/>
  <link:roleRef roleURI="http://autobytel.com/role/QuarterlyFinancialDataUnaudited" xlink:type="simple" xlink:href="abtl-20111231.xsd#QuarterlyFinancialDataUnaudited"/>
  <link:roleRef roleURI="http://autobytel.com/role/IncomeTaxes" xlink:type="simple" xlink:href="abtl-20111231.xsd#IncomeTaxes"/>
  <link:roleRef roleURI="http://autobytel.com/role/SeveranceCosts" xlink:type="simple" xlink:href="abtl-20111231.xsd#SeveranceCosts"/>
  <link:roleRef roleURI="http://autobytel.com/role/StockholdersEquity" xlink:type="simple" xlink:href="abtl-20111231.xsd#StockholdersEquity"/>
  <link:roleRef roleURI="http://autobytel.com/role/RetirementSavingsPlan" xlink:type="simple" xlink:href="abtl-20111231.xsd#RetirementSavingsPlan"/>
  <link:roleRef roleURI="http://autobytel.com/role/CommitmentsAndContingencies" xlink:type="simple" xlink:href="abtl-20111231.xsd#CommitmentsAndContingencies"/>
  <link:roleRef roleURI="http://autobytel.com/role/PatentLitigationSettlement" xlink:type="simple" xlink:href="abtl-20111231.xsd#PatentLitigationSettlement"/>
  <link:roleRef roleURI="http://autobytel.com/role/SelectedBalanceSheetAccounts" xlink:type="simple" xlink:href="abtl-20111231.xsd#SelectedBalanceSheetAccounts"/>
  <link:roleRef roleURI="http://autobytel.com/role/AcquisitionOfAutotropolisIncAndCyberVenturesInc" xlink:type="simple" xlink:href="abtl-20111231.xsd#AcquisitionOfAutotropolisIncAndCyberVenturesInc"/>
  <link:roleRef roleURI="http://autobytel.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="simple" xlink:href="abtl-20111231.xsd#SummaryOfSignificantAccountingPolicies"/>
  <link:roleRef roleURI="http://autobytel.com/role/OrganizationAndOperationsOfAutobytel" xlink:type="simple" xlink:href="abtl-20111231.xsd#OrganizationAndOperationsOfAutobytel"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedStatementsOfCashFlows"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedStatementsOfStockholdersEquity" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedStatementsOfStockholdersEquity"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLossParenthetical" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedStatementsOfOperationsAndComprehensiveLossParenthetical"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLoss" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedStatementsOfOperationsAndComprehensiveLoss"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:roleRef roleURI="http://autobytel.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="abtl-20111231.xsd#ConsolidatedBalanceSheets"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLoss"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLossParenthetical"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedStatementsOfStockholdersEquity">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockholdersEquity" xlink:title="definition: StatementLineItems to StockholdersEquity" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="CommonStockSharesOutstanding" xlink:title="CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="CommonStockSharesOutstanding" xlink:title="definition: StatementLineItems to CommonStockSharesOutstanding" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:label="StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:title="StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:label="StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:title="StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:title="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:title="definition: StatementLineItems to AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:label="AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:title="AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:title="definition: StatementLineItems to AdjustmentsToAdditionalPaidInCapitalWarrantIssued" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:label="AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:title="AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:title="definition: StatementLineItems to AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodValueStockOptionsExercised" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodSharesStockOptionsExercised" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" xlink:label="OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" xlink:title="OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" xlink:title="definition: StatementLineItems to OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="NetIncomeLoss" xlink:title="definition: StatementLineItems to NetIncomeLoss" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="StatementLineItems" xlink:to="StatementTable" xlink:title="definition: StatementLineItems to StatementTable" order="1.0" t1:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="StatementTable" xlink:to="StatementEquityComponentsAxis" xlink:title="definition: StatementTable to StatementEquityComponentsAxis" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_2" xlink:title="EquityComponentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_2" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain_2" priority="1" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="CommonStockMember" xlink:title="definition: EquityComponentDomain to CommonStockMember" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="AdditionalPaidInCapitalMember" xlink:title="AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AdditionalPaidInCapitalMember" xlink:title="definition: EquityComponentDomain to AdditionalPaidInCapitalMember" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedOtherComprehensiveIncomeMember" xlink:title="definition: EquityComponentDomain to AccumulatedOtherComprehensiveIncomeMember" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="RetainedEarningsMember" xlink:title="definition: EquityComponentDomain to RetainedEarningsMember" order="1.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ConsolidatedStatementsOfCashFlows"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/OrganizationAndOperationsOfAutobytel"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/SummaryOfSignificantAccountingPolicies"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/AcquisitionOfAutotropolisIncAndCyberVenturesInc"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/SelectedBalanceSheetAccounts"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/PatentLitigationSettlement"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/CommitmentsAndContingencies"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/RetirementSavingsPlan"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/StockholdersEquity"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/SeveranceCosts"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/IncomeTaxes"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/QuarterlyFinancialDataUnaudited"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/ScheduleIiValuationAndQualifyingAccounts"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://autobytel.com/role/DocumentAndEntityInformation"/>
</link:linkbase>
