    <SEC-DOCUMENT>0001564590-18-004564-index.html : 20180306
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    <ACCEPTANCE-DATETIME>20180306171935
    ACCESSION NUMBER:		0001564590-18-004564
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20180306
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180306
    DATE AS OF CHANGE:		20180306

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Cars.com Inc.
    		CENTRAL INDEX KEY:			0001683606
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
    		IRS NUMBER:				813693660
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37869
    		FILM NUMBER:		18670937

    	BUSINESS ADDRESS:
    		STREET 1:		300 S. RIVERSIDE PLAZA
    		STREET 2:		SUITE 1000
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    		BUSINESS PHONE:		312-601-5000

    	MAIL ADDRESS:
    		STREET 1:		300 S. RIVERSIDE PLAZA
    		STREET 2:		SUITE 1000
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>cars-8k_20180306.htm
    <DESCRIPTION>8-K - COMMUNICATION TO EMPLOYEES RE EARNINGS
    <TEXT>
    Document 1 - file: cars-8k_20180306.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>cars-ex991_17.htm
    <DESCRIPTION>EX-99.1 ERNGS RELEASE PRES.
    <TEXT>
    Document 2 - file: cars-ex991_17.htm

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    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>cars-ex992_123.htm
    <DESCRIPTION>EX-99.2 EMPLOYEE E-MAIL
    <TEXT>
    Document 3 - file: cars-ex992_123.htm

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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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