Organization and Business Description	3 Months Ended
Mar. 31, 2025
Accounting Policies [Abstract]
Organization and Business Description	1. Organization and Business Description CarGurus, Inc. (the “Company”) is a multinational, online automotive platform for buying and selling vehicles that is building upon its industry-leading listings marketplace with both digital retail solutions and the CarOffer, LLC (“CarOffer”) online wholesale platform. The CarGurus platform gives consumers the confidence to purchase and/or sell a vehicle either online or in person, and it gives dealerships the power to accurately price, effectively market, instantly acquire, and quickly sell vehicles, all with a nationwide reach. The Company uses proprietary technology, search algorithms, and data analytics to bring trust, transparency, and competitive pricing to the automotive shopping experience. The Company operates principally in the U.S., where it also operates the Autolist online marketplace and the CarOffer online wholesale platform as independent brands. The Company also operates online marketplaces under the CarGurus brand in Canada and the U.K. In the U.K. it also operates the PistonHeads online marketplace as an independent brand. The Company has subsidiaries in the U.S., Canada, Ireland, and the U.K. and it has two reportable segments, U.S. Marketplace and Digital Wholesale. See Note 12 of the Unaudited Condensed Consolidated Financial Statements (as defined in Note 2 of the Unaudited Condensed Consolidated Financial Statements) for further segment reporting and geographic information. 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, patent litigation, and dependence on key individuals.

Organization and Business Description

3 Months Ended

Mar. 31, 2025

1. Organization and Business Description

CarGurus, Inc. (the “Company”) is a multinational, online automotive platform for buying and selling vehicles that is building upon its industry-leading listings marketplace with both digital retail solutions and the CarOffer, LLC (“CarOffer”) online wholesale platform. The CarGurus platform gives consumers the confidence to purchase and/or sell a vehicle either online or in person, and it gives dealerships the power to accurately price, effectively market, instantly acquire, and quickly sell vehicles, all with a nationwide reach. The Company uses proprietary technology, search algorithms, and data analytics to bring trust, transparency, and competitive pricing to the automotive shopping experience.

The Company operates principally in the U.S., where it also operates the Autolist online marketplace and the CarOffer online wholesale platform as independent brands. The Company also operates online marketplaces under the CarGurus brand in Canada and the U.K. In the U.K. it also operates the PistonHeads online marketplace as an independent brand.

The Company has subsidiaries in the U.S., Canada, Ireland, and the U.K. and it has two reportable segments, U.S. Marketplace and Digital Wholesale. See Note 12 of the Unaudited Condensed Consolidated Financial Statements (as defined in Note 2 of the Unaudited Condensed Consolidated Financial Statements) for further segment reporting and geographic information.

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, patent litigation, and dependence on key individuals.