Quick answer
The mileage of a car from the USA is verified by comparing the odometer reading on the lot page, the accuracy disclosure (Actual, Not Actual, Exempt), the history in CARFAX/AutoCheck, service records, and, when possible, previous auction photos of the dashboard. Discrepancies between sources are a reason for further checking, not automatic proof of odometer rollback.
What the odometer disclosures mean
- Actual mileage — the reading matches the actual mileage based on data available at the time of registration;
- Not Actual — there is reason to believe the reading does not reflect the true mileage;
- Exempt — for vehicles of a certain age, state law may not require disclosure of exact mileage.
These disclosures are set under the rules of a specific state and are not a universal confirmation or refutation of mileage.
How to compare sources
CARFAX and AutoCheck reports may show the history of odometer readings at different stages — registrations, sales, service visits. Consistently increasing values without gaps increase confidence in the mileage; jumps, gaps, or decreasing readings are a reason for further checking.
Indirect signs of mileage inconsistency
- wear on the interior, steering wheel, and pedals does not match the stated mileage;
- service records showing higher mileage at an earlier date than the current reading;
- mileage inconsistency between different photos of the same lot in the case of a resale;
- absence of expected scheduled maintenance records despite high mileage.
Limits of the check
No source guarantees one hundred percent accuracy — reports are compiled from submitted data, and a physical inspection only shows indirect signs of wear. For an expensive purchase, an additional independent inspection may be worthwhile if available.
Frequently asked questions
Does a Not Actual status mean the mileage was definitely rolled back?
No, it only means there are grounds to doubt the accuracy of the reading — the reasons can vary.
Can low mileage without a service history be trusted?
Low mileage without supporting records should not automatically justify a higher bid.
Does CARFAX show absolutely every odometer change?
No, only those recorded by sources that report data to the database.
Next step
Use the mileage check together with the full lot evaluation method — "How to Choose a Lot on Copart" and "CARFAX and AutoCheck".
