What a discrepancy is
It is an MOT-history entry that does not fit the wider mileage story, such as an apparent drop, a large jump or an out-of-place digit.
Compare independent records
Read MOT entries in date order, then compare them with the dashboard, service history, invoices and the seller’s explanation. Ask for documents close to the test date in question.
Possible explanations
A data-entry issue or misunderstanding of a displayed figure can occur. Do not assume a cause. Any explanation involving mileage-related work or instruments should be supported by credible, dated evidence.
Correcting an incorrect MOT record
If the MOT was within the last 28 days, ask the MOT centre that carried it out to update the mileage. The centre must see the vehicle again and will update the record to the mileage shown when it checks the vehicle. If the MOT was more than 28 days ago, report the mistake online. The process requires specific vehicle and test details plus evidence showing what the mileage should be, dated within one day of the MOT test. Check the current GOV.UK guidance before relying on the process.
When to pause
Investigate further when the discrepancy is material, documents conflict or the seller’s explanation changes. Choosing not to proceed is a decision about confidence in the evidence, not an allegation.
Practical checklist
Frequently asked questions
Does a lower MOT mileage prove the car was clocked?
No. It is a reason to investigate carefully, not proof of a cause.
Can an MOT mileage record be corrected?
Yes, where it is wrong and the official process and evidence requirements are met. Check current GOV.UK guidance.