Clocked cars: how to spot mileage fraud

A clocked car is one whose mileage has been wound back to make it look less used, and so worth more. The quickest way to catch it is the GOV.UK MOT history: every test records the mileage, and a reading that is lower than an earlier one is a red flag. Then check that the wear on the car and the service records tell the same story. If the mileage does not add up and the seller has no paperwork to explain it, walk away.

On a modern car the mileage is stored electronically, and it can be altered with equipment plugged into the car. A dashboard that looks perfect proves nothing. The records around the car are what give it away.

Is clocking illegal?

Selling a car with a false mileage, without telling the buyer, is against the law.

• A trader who gives a false impression of a car's mileage, or leaves out that the mileage is wrong, can commit an offence under the consumer protection rules in the Digital Markets, Competition and Consumers Act 2024. These replaced the Consumer Protection from Unfair Trading Regulations 2008 in April 2025.
• Anyone, including a private seller, who dishonestly makes a false statement to make a gain, such as claiming a mileage they know is wrong, can commit fraud by false representation under the Fraud Act 2006.

There are honest reasons a recorded mileage can be wrong, such as a replaced instrument cluster. In that case the seller should have the invoice for the work and should tell you about it.

Check 1: the MOT history

The GOV.UK MOT history service shows the mileage recorded at each test, alongside the result and any defects. Cars in England, Scotland and Wales have records going back to 2005, so most used cars over three years old have several readings. Our guide on how to read MOT history walks through a record.

Look for:

• A reading lower than the one before. The clearest sign. A typing slip by a tester is possible, but then later readings carry on from the higher figure. A clocked car usually carries on from the lower one.
• A sudden drop in yearly mileage. A car that did 12,000 miles a year for five years and then 2,000 a year is worth asking about.
• A dashboard reading lower than the last MOT. Compare the mileage on the dash at the viewing with the last test. It can only be higher.
• Advisories that do not fit. Heavy brake, suspension or tyre wear noted at a low mileage can hint that the car has done more than it shows.

Our MOT pages show the median mileage at each age for many models, based on DVSA test data. A car well below the typical figure for its age is not necessarily clocked, as plenty of cars live quiet lives, but it is a reason to check the paperwork more carefully.

Check 2: the wear on the car

Wear is hard to fake on every part at once. Compare what you see with the mileage on the dash.

• Steering wheel and gear knob. Shiny, smooth or worn through at low mileage is a mismatch.
• Driver's seat bolster. The outer edge of the seat wears as people get in and out.
• Pedal rubbers. Worn smooth, or brand new on an older car.
• Carpet under the driver's heel. Worn through, or covered by a new mat.
• Stone chips on the bonnet and windscreen.
• Brake discs. A deep lip at the edge suggests many miles.

A car can be well looked after, and some parts are replaced as a matter of course. What you are looking for is a pattern that does not fit.

Check 3: the service records

Ask for the service book and invoices, and check every mileage against the MOT history and against each other.

• The mileages should rise with the dates.
• A service book with no stamps after a certain year, or a fresh book with every stamp in the same ink, deserves a question.
• If the stamps are from a garage, you can ask the garage to confirm the visit and the mileage they recorded.
• Old receipts, tyre invoices and parking or toll records in the glovebox sometimes carry a mileage too.

Check 4: a vehicle history check

A paid vehicle history check may include mileage readings from other sources, such as previous sales and servicing, alongside finance and write-off records. Use it to fill gaps in the MOT history, especially for newer cars, which have no MOT readings yet. In Great Britain a car's first MOT is due at three years, and in Northern Ireland at four. Our guide on how to check a car's history explains what each source covers.

If you have bought a clocked car

Act quickly and in writing.

1. Gather the evidence. The MOT history, the advert showing the mileage claimed, your messages, the receipt and anything the service records show.
2. If you bought from a dealer, contact them in writing. Under the Consumer Rights Act 2015, goods must match their description. A car sold with a false mileage does not. Within 30 days of taking delivery you have a short-term right to reject goods that do not match their description and get a refund. After that, you can still ask for a repair, replacement or price reduction, and a refund in some cases.
3. Report it to Trading Standards. In England and Wales, complaints usually go through the Citizens Advice consumer service, which passes them to Trading Standards. GOV.UK has a finder for your local office.
4. If you bought privately, a seller who lied about the mileage may be liable for misrepresentation. Get advice from Citizens Advice before you start a claim.
5. If you think it was fraud, report it to the police. In England, Wales and Northern Ireland that is Report Fraud.

When you sell the car on, tell the buyer that the recorded mileage is wrong. A trader who leaves it out breaks consumer protection law, and a private seller who states a mileage they know is false can commit fraud.

Frequently asked questions

How do I know if a car has been clocked?

Check the GOV.UK MOT history for a reading lower than an earlier one, compare the wear on the car with the mileage, and check that the service records and MOT readings agree.

Is clocking illegal in the UK?

Selling a car with a false mileage without telling the buyer is. A trader can commit an offence under consumer protection law, and anyone who knowingly states a false mileage to make a sale can commit fraud.

Can a digital odometer be wound back?

Yes. Modern mileage readings are stored electronically and can be altered. That is why the MOT history and the paperwork matter more than the dashboard.

What if the MOT history has one wrong reading?

A single typing slip by a tester can happen. If later readings carry on from the higher figure, it is likely an error. If they carry on from the lower one, treat the car as suspect until the seller can explain it.