How to check if a car has been clocked before you buy it

The short answer

Enter the registration on the GOV.UK MOT history service and read the mileage line at every test. The numbers should climb steadily, year on year, and the latest should be at or below what the odometer shows today. A reading that falls, a jump that does not fit the pattern, or a total on the dashboard that is lower than the last test, is a car to walk away from until the seller explains it. Then match the number to the paperwork and to the wear on the car. Citizens Advice says it plainly: ask the seller for the mileage, confirm it against official records, and do not continue with the deal if you are suspicious of the MOT history.

Step one: the MOT record

The MOT history service shows, for every test since 2005, whether the car passed or failed, the mileage the tester recorded, and the items noted. All you need is the registration, and it is free. Read the mileage column from the oldest test to the newest and ask three questions. Does it rise every time? Is the rise each year roughly the same, or does it fit a story the seller has told you, such as a long commute that ended? And is today's odometer higher than the last recorded figure? A seller who says a tester typed the number wrong may be right, since it happens, but one wrong entry should sit alone in an otherwise steady climb.

Look at the gaps too. A car that missed a test, or went two years between tests, may have been off the road under a SORN, which is legitimate; it may also be a period in which the record cannot help you. Ask about any gap, as Citizens Advice advises. Where each test was done is also on the service, if you have the 11-digit number from the V5C; a car tested at the same garage for years and then suddenly elsewhere is worth a question.

Step two: the paperwork and the DVLA record

The V5C log book must be the original, not a photocopy, and Citizens Advice says never to buy a car without it. The DVLA vehicle enquiry service shows the date of first registration, the date the current log book was issued, the engine size, fuel type and tax status for any registration; if the log book does not match the car on the DVLA record, Citizens Advice says to report the seller to the police. A log book issued very recently, on a car the seller says they have had for years, needs an explanation.

Service records and old invoices carry mileages of their own. Lay them beside the MOT readings in date order. A service stamp at a higher mileage than a later MOT test is the clearest written evidence of clocking you are likely to find.

Step three: the car itself

1. The pedals and the wheel. Rubber worn smooth on the pedals, a shiny steering wheel rim and a sagging driver's seat bolster belong on a car that has covered a lot of miles. On a car showing a low reading they are the first thing to question.
2. The stone chips. A bonnet and front bumper peppered with chips come from motorway miles. A low reading and a heavily chipped nose do not go together.
3. The tyres. Four new tyres on a car showing modest mileage is not wrong, but ask why. Tyres of different ages and brands point to a car that has been through sets.
4. The dashboard itself. On a digital display a reading that is lower than the last MOT test is the end of the conversation. Some cars also record mileage in the engine or gearbox control unit, which a garage can read, so ask a workshop to check if you are serious about the car and something does not add up.

If the mileage turns out to be false

Winding back an odometer is not in itself the offence; selling a car with a false mileage and letting a buyer rely on it is, and under consumer law a car that does not match its description can give you the right to a repair, the cost of a repair, or some or all of your money back, as Citizens Advice sets out. If you have already bought, start with the seller in writing. If that fails, call the Citizens Advice consumer helpline on 0808 223 1133, which explains the law that applies and can pass the complaint to Trading Standards, who investigate traders. Where you believe you have been deliberately deceived, report it to Action Fraud, or to the police on 101. Keep the advert, the messages and the MOT printout; the record is dated and it is the evidence.

What this does not mean

A steady MOT mileage record is strong evidence, not proof. The record starts at the first test, so a car under three years old has no readings yet, and a reading is only as good as the tester's entry on the day. Nor does an honest mileage make a car a good one: a car can show its true miles and still be in poor condition, and a high reading with a full record is often a better buy than a low one with none. For what a normal reading looks like at each age, our national mileage-by-age figures come from millions of recorded readings; this article contains none of its own.

Sources and method

This article contains no MOT statistics. It describes the checks a buyer can make with the free GOV.UK services and the steps Citizens Advice sets out, as those pages read on 30 October 2026. The MOT reliance notice below applies to the MOT history this article tells readers to use.

• GOV.UK: Check the MOT history of a vehicle
• GOV.UK: Get vehicle information from DVLA
• Citizens Advice: Buying a used car
• Citizens Advice: consumer helpline
• Action Fraud

This article is general information drawn from published test records. It is not professional, mechanical or legal advice, and an MOT pass or a clean MOT history does not guarantee that a car is roadworthy today. If you are unsure about a car, have it inspected by a qualified mechanic. You can check any vehicle's MOT history free on the official GOV.UK MOT history service.