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Smart VIN Check

CARFAX vs AutoCheck

Both reports read the same VIN, but they don’t hold the same records. Here is what each is strongest at, and when one is enough.

Updated October 2026

Side by side

What appears depends on what was reported for each VIN.
CARFAXAutoCheck
Made byCARFAX (S&P Global)Experian
Title brandsYesYes
Accidents and damageAs reported to CARFAXAs reported to Experian’s sources
Odometer readingsYesYes
Service recordsA strong point: many shops report to CARFAXFewer
Auction recordsSomeA strong point, including auction announcements
A comparison scoreNoThe AutoCheck score

When CARFAX is the one to get

For a car bought from a private seller or a franchise dealer, the service history is often the most useful part: regular maintenance at the dealer, mileage at each visit, recall repairs. That’s where CARFAX tends to hold more.

When AutoCheck adds something

Cars that moved through dealer auctions, rental and fleet cars, and cars you’re comparing against others of the same model are where AutoCheck’s auction records and score help.

When to read both

  • The car is expensive, or you’re importing it and can’t inspect it in person.
  • One report shows a gap: years with no records, or a mileage jump.
  • The car came through an auction. Add the auction report to see photos of the damage.
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Letters and numbers, no I, O or Q. It’s on the dashboard by the windshield, on the driver’s door frame, and on the title.

Questions

Can two reports disagree?

Yes. Each lists what its own sources reported. A brand or an accident on one and not the other is a reason to look closer, not a mistake.

Which one do dealers use?

Both are widely used. Franchise dealers often show CARFAX in listings; auction buyers often rely on AutoCheck.

Are you affiliated with either?

No. Smart VIN Check is an independent reseller of both reports.

Related

Sources