Mileage fraud

How to spot a clocked car

“Clocking” means winding back a car's mileage so it looks less used and worth more. Digital dashboards haven't stopped it: the tools to change them are cheap and widely available. The good news: the car's past usually gives it away.

Your Car Data guide · Updated 15 October 2026

In short

  • Every MOT records the mileage, and the readings should go up every year.
  • A reading that goes down is a major red flag.
  • Compare the mileage with the car's wear, service history and paperwork.
  • It's against the law to sell a clocked car without telling the buyer.

Why clocking matters

Five ways to check a car's real mileage

1. Look at the MOT mileage history

Every MOT test records the mileage, and these records are kept by the DVSA. Once a car is three years old (four in Northern Ireland) it has an MOT every year, so you get a reading roughly every 12 months. They should always rise. If one is lower than the year before, ask why.

A small dip of a few miles between a failed MOT and its retest a few days later is usually a typing slip by the tester. Clocking is normally thousands of miles.

2. Compare with typical mileage

A typical UK car covers somewhere around 7,000–10,000 miles a year. Very low mileage isn't proof of clocking (some cars genuinely do very little), but if a ten-year-old car shows 25,000 miles, it's worth asking about and checking the other signs.

3. Check the service history

Service stamps and invoices should record the mileage at each visit, and the numbers should fit the MOT history. If you can, ring the garage that last serviced the car and ask what mileage it was at.

4. Look at the wear

A car that has really done 30,000 miles shouldn't look like it has done 130,000. Look at:

Brand-new pedal rubbers or a new steering wheel on an older car can also be a sign someone has tried to hide wear.

5. Read the paperwork

Old MOT certificates, repair bills and receipts often show the mileage. Any that don't fit the story are worth questioning.

Under three years old? The car won't have had an MOT yet, so lean on the service record, the dealer's records and the car's condition.

Check a car's mileage history for free

Enter a registration in the Your Car Data free check to see every MOT mileage reading on record. It flags any reading that went backwards, shows the car's average yearly mileage and gives an estimate of its mileage today. The full history check adds a cross-check against industry mileage records, as well as stolen, write-off and outstanding finance checks.

Check a vehicle now

Free MOT, mileage and tax check for any UK car, van or motorbike. The full history check (stolen, write-off, outstanding finance and more) is £5.99.

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