Organization and Business Description	6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]
Organization and Business Description	1. Organization and Business Description CarGurus, Inc. (the “Company” or “CarGurus”) is a multinational automotive platform helping consumers and dealers confidently buy and sell vehicles. Founded in 2006 with a mission to bring more trust and transparency to car shopping, CarGurus is an automotive shopping site in the U.S. CarGurus’ selection, trusted automotive insights, and data-driven products and solutions support each shopper’s journey – from online research and shopping to in-dealership decisions – to empower them at every step. CarGurus provides dealers a personalized, predictive intelligence platform with software solutions that helps them run their businesses more efficiently and profitably at all stages of inventory acquisition and pricing, marketing, and conversion to sale. The Company operates under the CarGurus brand in the U.S., Canada, and the U.K, with the U.S. representing its primary market. In addition, the Company operates the Autolist online marketplace in the U.S. and the PistonHeads online marketplace in the U.K. as independent brands. The Company has subsidiaries in the U.S., Canada, Ireland, and the U.K. CarOffer, LLC (“CarOffer”) completed its wind-down and, for accounting purposes, was considered abandoned as of December 31, 2025. For further information, refer to Note 3 of the Unaudited Condensed Consolidated Financial Statements (as defined below). Effective as of the fourth quarter of 2025 the Company revised its segment reporting from two reportable segments to one reportable segment, in connection with the wind-down of CarOffer and as a result of the Chief Operating Decision Maker (“CODM”) managing the business, making operating decisions, and evaluating operating performance on a consolidated basis. For further segment reporting and geographic information, refer to Note 13 of the Unaudited Condensed Consolidated Financial Statements. The Company is subject to a number of risks and uncertainties common to companies in its and similar industries and stages of development including but not limited to rapid technological changes, competition from substitute products and services from larger companies, management of international activities, protection of proprietary rights, litigation, and dependence on key individuals.

Organization and Business Description

6 Months Ended

Jun. 30, 2026

1. Organization and Business Description

CarGurus, Inc. (the “Company” or “CarGurus”) is a multinational automotive platform helping consumers and dealers confidently buy and sell vehicles. Founded in 2006 with a mission to bring more trust and transparency to car shopping, CarGurus is an automotive shopping site in the U.S. CarGurus’ selection, trusted automotive insights, and data-driven products and solutions support each shopper’s journey – from online research and shopping to in-dealership decisions – to empower them at every step. CarGurus provides dealers a personalized, predictive intelligence platform with software solutions that helps them run their businesses more efficiently and profitably at all stages of inventory acquisition and pricing, marketing, and conversion to sale.

The Company operates under the CarGurus brand in the U.S., Canada, and the U.K, with the U.S. representing its primary market. In addition, the Company operates the Autolist online marketplace in the U.S. and the PistonHeads online marketplace in the U.K. as independent brands.

The Company has subsidiaries in the U.S., Canada, Ireland, and the U.K.

CarOffer, LLC (“CarOffer”) completed its wind-down and, for accounting purposes, was considered abandoned as of December 31, 2025. For further information, refer to Note 3 of the Unaudited Condensed Consolidated Financial Statements (as defined below).

Effective as of the fourth quarter of 2025 the Company revised its segment reporting from two reportable segments to one reportable segment, in connection with the wind-down of CarOffer and as a result of the Chief Operating Decision Maker (“CODM”) managing the business, making operating decisions, and evaluating operating performance on a consolidated basis. For further segment reporting and geographic information, refer to Note 13 of the Unaudited Condensed Consolidated Financial Statements.

The Company is subject to a number of risks and uncertainties common to companies in its and similar industries and stages of development including but not limited to rapid technological changes, competition from substitute products and services from larger companies, management of international activities, protection of proprietary rights, litigation, and dependence on key individuals.