Clocking is when a vehicle's mileage is deliberately reduced to make it look newer. It is still one of the most common used car scams. The good news is that MOT history usually leaves fingerprints.
This guide shows you the patterns to spot and how to double-check before you buy.
The easiest red flags
Mileage goes backwards
If a later MOT shows fewer miles than an earlier one, something is wrong.
Big jumps with no explanation
Large increases can be normal for high-mileage drivers, but a sudden jump followed by a drop is suspicious.
Yearly averages do not make sense
If a car does 12k miles per year for five years, then suddenly 2k per year, ask why.
Common innocent explanations
Not every odd pattern is fraud. Some genuine reasons include:
- an MOT tester typing a number wrong
- a vehicle sitting off the road for months
- a replacement instrument cluster
What matters is whether the story matches the record.
How to double-check
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Compare MOT history to service records
If the service book and MOTs tell different stories, you have a problem. -
Ask for invoices
Service or repair invoices often show mileage. -
Check wear and tear
Steering wheel, pedals, seat bolsters and switches should match the mileage.
What to do if you spot a mismatch
If the mileage feels wrong and the seller is vague, walk away. The risk is not worth it.
If you still want the car, insist on written evidence of the correct mileage and a price adjustment that reflects the uncertainty.
The bottom line
Clocking is easier to spot than people think. A quick read of MOT history, plus a few simple checks, can save you from an expensive mistake.
If you are serious about a car, combine MOT history with a full report to check for finance, theft and write-off history too.
- Free check:
/check - Full report:
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