Organization and Business Description	9 Months Ended
Sep. 30, 2024
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 United States (the "U.S."). In the U.S. it also operates as independent brands the Autolist online marketplace and the CarOffer online wholesale platform. In addition to the U.S., the Company operates online marketplaces under the CarGurus brand in Canada and the United Kingdom (the "U.K."). In the U.K. it also operates as an independent brand the PistonHeads online marketplace. 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 13 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.

Organization and Business Description

9 Months Ended

Sep. 30, 2024

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 United States (the "U.S."). In the U.S. it also operates as independent brands the Autolist online marketplace and the CarOffer online wholesale platform. In addition to the U.S., the Company operates online marketplaces under the CarGurus brand in Canada and the United Kingdom (the "U.K."). In the U.K. it also operates as an independent brand the PistonHeads online marketplace.

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 13 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.