Read the car listing in this tab and value it from real completed sales.
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#376K
#282K among extensions
Version
0.9.33
updated 15 Oct 2026
About BidBetter
Shopping for a car online? Before you bid or make an offer, find out what it's really worth.
Open a car listing, click BidBetter and press **Read this listing**. BidBetter reads the year, make, model, miles and VIN from the page. It then finds completed sales of the same car in BidBetter sales data and shows you a value range based on them.
**WHAT YOU GET**
• A "most likely" range and a full range, adjusted for mileage and year
• The completed sales behind the number, so you can check every one
• A confidence badge that tells you how tight the data is. If nothing close sold, BidBetter says so instead of guessing
• Live auctions: in the final hour, the current bid blended with completed sales, plus the price with the buyer's fee
• A walk-away price for auctions, with the buyer's fee already added
• Dealer and classified listings: the asking price next to what the car actually sold for
• A VIN decode from NHTSA
• A summary of the seller's answers and the comment thread on auction sites
**VALUE A CAR WITHOUT A LISTING**
Enter a VIN or the car's details on the Value a Car tab.
**MY GARAGE**
Save the cars you own and check what they're worth.
**SAVED REPORTS**
Save any read as a report, then export it as a PDF, print it, email it or send a share link to a lender or partner.
**WORKS ON**
Major online car auction, classified and dealer listing sites.
**PRIVACY**
The first time you use BidBetter on a site, Chrome asks for access to that site only. Nothing is read until you allow it.
**PLANS**
Free accounts include 3 lookups a month, 3 saved reports and 1 garage car. Paid plans are unlimited.
BidBetter gives an estimate based on past sales. It is not an appraisal or an offer.