v3.26.1
Cover
Sep. 10, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 10, 2026
Entity File Number 001-40256
Entity Registrant Name ACV AUCTIONS INC.
Entity Central Index Key 0001637873
Entity Tax Identification Number 47-2415221
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 640 Ellicott Street #321
Entity Address, City or Town Buffalo
Entity Address, State or Province NY
Entity Address, Postal Zip Code 14203
City Area Code 800
Local Phone Number 553-4070
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.001 per share
Trading Symbol ACVA
Security Exchange Name NYSE
Entity Emerging Growth Company false