Mileage Fraud: How to Spot a Clocked Car in the UK

Mileage fraud — commonly called clocking — is one of the most prevalent forms of vehicle fraud in the UK. The Society of Motor Manufacturers and Traders estimates that around 800,000 clocked cars change hands each year. A clocked car appears to have lower mileage than it actually does, deceiving buyers into paying more than the vehicle is worth and obscuring the true wear it has suffered. Knowing how to spot a clocked car could save you thousands of pounds.

What Is a Clocked Car?

A clocked car is a vehicle whose odometer has been tampered with to show a lower mileage than the car has actually covered. In older analogue odometers, this was done mechanically by running the counter backwards. In modern digital odometers, it requires specialist software — which is readily available and inexpensive. The offence of odometer fraud is illegal under the Consumer Protection from Unfair Trading Regulations 2008, but prosecutions are rare and the practice remains widespread.

How to Spot a Clocked Car: Step by Step

No single check definitively confirms clocking, but combining multiple checks gives a reliable picture.

Check the MOT history first. The DVSA's free MOT history at gov.uk records the mileage at every MOT test. A consistent upward progression is what you want to see. A mileage figure that drops between tests, or jumps implausibly in either direction, is a clear red flag. This is one of the most powerful free tools available to used car buyers.

Check the service history. Cross-reference the mileage at each service entry against the MOT history mileage timeline. A car with a full service history provides more data points to cross-reference — making any inconsistency easier to detect. If service records show 90,000 miles but the car is now presented with 40,000 miles, something is clearly wrong.

Run a vehicle history check. A paid HPI check or equivalent cross-references mileage data from multiple additional sources — insurance records, dealer records, and other databases. Mileage discrepancies flagged by a history check are strong evidence of tampering.

Inspect the physical wear. A car claiming low mileage should show low wear throughout. Check the driver's seat cushion and bolster for wear, the steering wheel for thinning on the grip area, pedal rubbers for wear patterns, and the gear knob for polish or wear. A car showing heavy wear on these items but claiming low mileage is inconsistent.

Check service stickers. Many garages place oil change stickers inside the door jamb or under the bonnet. These often record the mileage at the time of the service. Even if the main service booklet has been removed or falsified, these stickers can reveal the actual mileage history.

What to Do If You Suspect Clocking

Do not buy the car. Report your suspicions to Trading Standards via the Citizens Advice consumer helpline on 0808 223 1133. If you have already bought a car and believe it has been clocked, you may have legal remedies under consumer protection legislation — take advice from Citizens Advice or a solicitor.

Key Takeaways

• Around 800,000 clocked cars change hands in the UK each year — it is one of the most prevalent forms of vehicle fraud.
• Check the free DVSA MOT history for mileage progression — any drop or implausible jump is a red flag.
• Cross-reference service history mileages against MOT history — a full service history makes discrepancies easier to detect.
• Run a paid vehicle history check for additional mileage data sources.
• Physical wear should be consistent with claimed mileage — heavy wear on a low-mileage car is suspicious.

Related reading: Full Service History vs Partial: Does It Really Matter? | What Is an HPI Check and Do You Need One? | Free vs Paid Car History Check