How to Interpret Auction Odometer Records
A reading is only as good as its status. Compare readings in date order and check the units.
Updated
Auction listings record the odometer reading at check-in together with a status. The status matters as much as the number, because a damaged vehicle's odometer is not always readable or reliable.
Common statuses
- Actual. The seller states the reading reflects the true mileage to the best of their knowledge.
- Not actual. The reading is known not to reflect true mileage, for example after an instrument cluster was replaced.
- Exceeds mechanical limits. The mileage has gone past what the odometer can display.
- Exempt. Federal rules do not require a mileage statement for the vehicle because of its age. Since 2021, vehicles from model year 2011 onward stay covered for 20 years; older vehicles were exempt after 10 years.
- Unreadable / not available. Common when a digital odometer has no power after an accident.
Exact wording differs between auctions. AutoBimer shows the status exactly as reported.
Comparing readings across records
When a VIN appears in several listings, put the readings in date order. In a normal history each reading is equal to or higher than the one before. AutoBimer does this automatically in the Vehicle Insights section of each VIN page.
If a later reading is lower, it is worth investigating, but there are innocent explanations:
- One record is in kilometres and another in miles.
- A digit was mistyped when the listing was created.
- The instrument cluster was replaced. The status should then say "not actual".
A lower reading on its own does not prove tampering. Check service records, inspection reports and the title's odometer statement.
Photos help
Listings often include a photo of the instrument cluster. If the photo is readable, compare it with the reading in the record. AutoBimer links each photo set to its own listing, so you can see which reading belongs to which date.