The quickest way to spot a clocked car is to compare the mileage on the dashboard with the vehicle's MOT history, then check that the wear, paperwork and service records tell the same story. If the dash shows 38,000 miles but an MOT three years ago recorded 62,000, you have found a serious red flag and should walk away or ask hard questions.
Clocking means winding back or tampering with an odometer to make a car look less used, which pushes up its price. Misleading a buyer about mileage can amount to fraud, and it is still common on used cars. No single check is foolproof, so the best approach is to combine several of the steps below.
1. Check the MOT mileage history first
Every MOT test records the odometer reading, and the DVSA makes this history available online for free using the registration number. Look at the readings in date order and watch for:
- Mileage that goes down between tests
- Unusually small annual mileage compared with earlier years (the UK average is roughly 7,000 miles a year)
- Big jumps or long flat spells that do not fit how the car has been used
- Typos or unit mix-ups, which are sometimes innocent but worth asking about
Also read the advisories. Notes about worn tyres, brakes or suspension on a car with supposedly low mileage can point to a problem.
2. Look for wear that does not match the mileage
A car showing 30,000 miles should look and feel like it. Check the parts that people touch and use most:
- Driver's seat bolster (the side that you slide over when getting in) for sagging or cracks
- Steering wheel and gear knob for shiny, worn or peeling surfaces
- Pedal rubbers and the carpet beneath them
- Key and buttons with faded or rubbed-off markings
Be aware that worn parts are sometimes replaced to hide high mileage. New pedals or a new seat cover on an older car is itself a reason to ask why.
3. Check the service history and paperwork
A genuine service history should show mileage rising steadily. Check stamps and invoices carefully, and consider phoning the garage named in the book to confirm the work and the mileage they recorded. Look at the V5C logbook too. The number of previous keepers should fit the car's age and mileage. Old MOT certificates, receipts and past adverts can also reveal earlier readings.
4. Run a vehicle history check
Some history checks include recorded mileage readings from several sources, though coverage varies and they do not catch every case. A check can also show things that often go together with a dodgy car:
- Insurance write-off records (MIAFTR categories A, B, S and N)
- Stolen vehicle markers on the Police National Computer (PNC)
- Outstanding finance
- Previous keepers and plate changes
Before you travel to view a car, it is worth entering its registration on motorpeek.com to see what the records show.
5. Do not trust a digital dashboard on its own
Digital odometers can be altered with the right equipment, often leaving no physical trace. On newer cars, a garage or specialist with diagnostic equipment can sometimes compare the dashboard figure with mileage stored in other control modules, such as the engine or gearbox. If the figures disagree, treat it as a warning.
6. Watch the seller as well as the car
Sellers of clocked cars often give themselves away. Warning signs include:
- Refusing to let you see the V5C or the service book
- Meeting in a car park or somewhere other than their home or premises
- Pushing for a quick cash sale
- A price that is well below similar cars
- Vague answers about who owned the car and where it was serviced
7. Know what to do if you suspect clocking
If the evidence does not add up, walk away. There are plenty of other cars for sale. If you have already bought a car and later find that the mileage was misrepresented, keep all your evidence, including the advert, messages and receipts. You can then contact Trading Standards through Citizens Advice, and report suspected fraud to Action Fraud. If you bought from a dealer, you may have rights under the Consumer Rights Act 2015, such as a short-term right to reject faulty goods, but the outcome depends on your circumstances. It may be worth getting independent advice.
The bottom line
Compare the MOT history, inspect the car's wear, verify the paperwork, and run a history check before you pay. If you cannot make the numbers and the condition tally, do not buy the car.
Frequently asked questions
Can you check if a car has been clocked for free?
Yes, partly. The DVSA's MOT history service lets you look up past mileage readings by registration number at no cost, and a mileage drop or odd jump is the clearest sign of clocking. It will not catch every case, so also check the car's wear, service records and paperwork.
Is clocking a car illegal in the UK?
Correcting an odometer can be lawful in limited situations, such as replacing a faulty instrument, but the change should be disclosed. Selling a car while dishonestly misrepresenting its mileage can amount to fraud. If you suspect this, contact Trading Standards via Citizens Advice or report it to Action Fraud.
Can a digital odometer be clocked?
Yes. Digital odometers can be altered with specialist equipment and often leave no visible sign. A garage with diagnostic tools can sometimes compare the dashboard reading with mileage stored in other modules, and checking MOT history and service records can also help expose a mismatch.