Organization and Business Description	3 Months Ended
Mar. 31, 2023
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") digital wholesale platform. The CarGurus platform gives consumers the confidence to buy and/or sell a vehicle either online or in-person, and it gives dealerships the power to accurately price, instantly acquire, effectively market, 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 is headquartered in Cambridge, Massachusetts and was incorporated in the State of Delaware on June 26, 2015. The Company operates principally in the United States. In the United States, it also operates as independent brands the Autolist online marketplace, which it wholly owns, and the CarOffer digital wholesale platform, in which it holds a 51% equity interest. In addition to the United States, the Company operates online marketplaces under the CarGurus brand in Canada and the United Kingdom. In the United Kingdom, it also operates as an independent brand the PistonHeads online marketplace, which it wholly owns. The Company has subsidiaries in the United States, Canada, Ireland, and the United Kingdom. Effective as of the fourth quarter of 2022, the Company revised its segment reporting from one reportable segment to two reportable segments – U.S. Marketplace and Digital Wholesale. See Note 12 of these 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, 2023

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") digital wholesale platform. The CarGurus platform gives consumers the confidence to buy and/or sell a vehicle either online or in-person, and it gives dealerships the power to accurately price, instantly acquire, effectively market, 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 is headquartered in Cambridge, Massachusetts and was incorporated in the State of Delaware on June 26, 2015.

The Company operates principally in the United States. In the United States, it also operates as independent brands the Autolist online marketplace, which it wholly owns, and the CarOffer digital wholesale platform, in which it holds a 51% equity interest. In addition to the United States, the Company operates online marketplaces under the CarGurus brand in Canada and the United Kingdom. In the United Kingdom, it also operates as an independent brand the PistonHeads online marketplace, which it wholly owns.

The Company has subsidiaries in the United States, Canada, Ireland, and the United Kingdom. Effective as of the fourth quarter of 2022, the Company revised its segment reporting from one reportable segment to two reportable segments – U.S. Marketplace and Digital Wholesale. See Note 12 of these 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.