CarGurus Inc

APPENDIX B

THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date SCAN TO VIEW MATERIALS & VOTE To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below. 0000642734_1 R1.0.0.6 For Withhold For All All All Except The Board of Directors recommends you vote FOR the following director nominee: 1. To elect three Class I directors to hold office until the 2027 Annual Meeting of Stockholders. Nominees 01) Lori Hickok 02) Greg Schwartz 03) Jason Trevisan CARGURUS, INC. C/O BROADRIDGE P.O. BOX 1342 BRENTWOOD, NY 11717 VOTE BY INTERNET - www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic deli

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Annual Report and Notice and Proxy Statement are available at www.proxyvote.com CARGURUS, INC. Annual Meeting of Stockholders June 5, 2024 2:00 P.M. ET This proxy is solicited by the Board of Directors The undersigned hereby appoints Elisa Palazzo and Jason Trevisan, and each or either of them, as the true and lawful attorneys of the undersigned, with full power of substitution and revocation, and authorizes them, and each of them, to vote all the shares of common stock of CarGurus, Inc. which the undersigned is entitled to vote at the Annual Meeting of Stockholders to be held virtually at 2:00 P.M. ET on Wednesday, June 5, 2024, conducted via live audio webcast at www.virtualshareholdermeeting.com/CARG2024, and any adjournment thereof upon the matters specified and upon such other matters as may be properly brought before the meeting or any adjournment thereof, conferring authority upon such true and lawful attorneys to vote in their discretion on such other matters as may properly come before the meeting and revoking any proxy heretofore given. THE SHARES REPRESENTED BY THIS PROXY WILL BE VOTED AS DIRECTED OR, IF NO DIRECTION IS GIVEN, SHARES WILL BE VOTED FOR THE ELECTION OF THE DIRECTORS IN ITEM 1, FOR THE PROPOSAL IN ITEM 2, FOR THE PROPOSAL IN ITEM 3 AND FOR THE PROPOSAL IN ITEM 4. THE PROXIES WILL VOTE IN THEIR DISCRETION ON ANY OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING AND ANY ADJOURNMENT THEREOF. Continued and to be signed on reverse side