"Clocking" means winding back a car's odometer to make it look like it has covered fewer miles than it actually has — which inflates the car's apparent value and can hide wear that would otherwise raise questions. It is illegal in the UK, but enforcement is difficult, and it is not always obvious just from looking at or driving the car.
Warning signs during a viewing
- Wear on the driver's seat, steering wheel, pedals or gear knob that looks more advanced than the claimed mileage would suggest
- A service history with gaps, missing stamps, or handwriting that looks inconsistent
- A dashboard mileage that does not match figures on old MOT certificates, service invoices, or the V5C (if available)
- Tyres, timing belt, or other mileage-linked service items that look far more worn than the claimed mileage implies
Why MOT history is the most reliable evidence
Every MOT test permanently records the vehicle's mileage at the time of the test. Because these records are held independently by DVSA and cannot be edited retroactively by the seller, comparing the mileage progression across a car's full MOT history is one of the most reliable ways to spot a discrepancy — a mileage that has gone backwards, or jumped unrealistically, between tests is a clear red flag.
What the mileage anomaly check adds
Beyond the free MOT history timeline, the Full Vehicle Report includes a dedicated mileage anomaly check that cross-references mileage records across multiple sources to flag inconsistencies automatically, alongside finance, theft and write-off checks, plus valuation and full specification — all for £6.99.
Ready to check a car before you buy it?
The Full Vehicle Report checks finance, theft, write-off status, mileage anomalies, plus valuation and full spec — £6.99, instant, official data sources.
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Frequently asked questions
Is clocking actually illegal?
Yes — deliberately altering an odometer to misrepresent a vehicle's mileage is illegal in the UK, though it can still be difficult to prove or trace back to a specific seller after the sale.
Can I check MOT mileage history for free?
Yes — the free MOT history check shows the mileage recorded at every past test.
What if I already bought a car and suspect clocking?
Gather any mileage evidence you can (MOT records, service invoices) and seek advice from Citizens Advice or Trading Standards, since this may constitute misrepresentation by the seller.
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