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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 22,053	$ 78,954	$ 110,373
Other comprehensive income:
Foreign currency translation adjustment	743	(1,241)	(2,283)
Consolidated comprehensive income	22,796	77,713	108,090
Comprehensive (loss) income attributable to redeemable noncontrolling interests	(14,889)	(5,433)	1,129
Comprehensive income attributable to CarGurus, Inc.	$ 37,685	$ 83,146	$ 106,961

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