Consolidated Income Statements - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021
Revenue
Total Revenue		$ 914,242	$ 1,655,035		$ 951,373
Cost of revenue
Total Cost of revenue	[1]	262,788	997,482		294,015
Gross profit		651,454	657,553		657,358
Operating expenses:
Sales and marketing		304,070	336,708		290,574
Product, technology, and development		146,169	123,768		106,423
General and administrative		152,757	73,117		97,678
Depreciation and amortization		15,831	15,482		14,415
Total operating expenses		618,827	549,075		509,090
Income from operations		32,627	108,478	[2]	148,268	[2]
Other income, net:
Interest income		18,430	3,845		120
Other income (expense), net		630	(961)		972
Total other income, net		19,060	2,884		1,092
Income before income taxes		51,687	111,362		149,360
Provision for income taxes		29,634	32,408		38,987
Consolidated net income		22,053	78,954		110,373
Net (loss) income attributable to redeemable noncontrolling interest		(14,889)	(5,433)		1,129
Net (loss) income Attributable to CarGurus, Inc		36,942	84,387		109,244
Deemed dividend on redemption of noncontrolling interest		5,838
Accretion of redeemable noncontrolling interest to redemption value			(109,398)		109,398
Net income (loss) attributable to common stockholders - basic		$ 31,104	$ 193,785		$ (154)
Net income (loss) per share attributable to common stockholders: (Note 12)
Basic		$ 0.27	$ 1.64		$ 0
Diluted		$ 0.19	$ 0.62		$ 0
Weighted-average number of shares of common stock used in computing net income (loss) per share attributable to common stockholders:
Basic		113,240,139	118,474,991		117,142,062
Diluted		114,188,834	128,150,974		117,142,062
Marketplace
Revenue
Total Revenue		$ 698,236	$ 658,771		$ 636,942
Cost of revenue
Total Cost of revenue	[1]	60,020	56,040		47,689
Wholesale
Revenue
Total Revenue		100,908	237,635		195,127
Cost of revenue
Total Cost of revenue	[1]	90,066	176,446		127,679
Product
Revenue
Total Revenue		115,098	758,629		119,304
Cost of revenue
Total Cost of revenue	[1]	$ 112,702	$ 764,996		$ 118,647

[1] Includes depreciation and amortization expense for the years ended December 31, 2023, 2022, and 2021 of $32,643, $29,852, and $26,061, respectively.

[2] As of December 31, 2022 and 2021, Digital Wholesale segment loss (income) did not reflect certain Dealer-to-Dealer and IMCO related capitalized website development expense from the U.S. Marketplace segment. During the three months ended March 31, 2023, the Company updated Digital Wholesale Depreciation and Amortization to reflect certain Dealer-to-Dealer and IMCO related capitalized website development amortization expense from the U.S. Marketplace segment and accordingly updated Digital Wholesale Depreciation as of December 31, 2022 and 2021 for comparative purposes.