Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 18,061	$ 27,396	$ 36,899	$ 46,947
Other comprehensive income:
Foreign currency translation adjustment	(1,586)	248	(2,075)	(835)
Consolidated comprehensive income	16,475	27,644	34,824	46,112
Comprehensive loss attributable to redeemable noncontrolling interests	(1,223)	(656)	(2,295)	(3,466)
Comprehensive income attributable to CarGurus, Inc.	$ 17,698	$ 28,300	$ 37,119	$ 49,578