May 7, 2025 William Zerella Chief Financial Officer ACV Auctions Inc. 640 Ellicott Street, #321 Buffalo, NY 14203 Re: ACV Auctions Inc. Form 10-K for Fiscal Year Ended December 31, 2024 File No. 001-40256 Dear William Zerella: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Trade & Services