What you'll see
- Mileage recorded at every MOT test
- Annual mileage calculation between tests
- Mileage trend over the car's life
- Anomaly detection: drops or suspicious jumps flagged
- Total mileage verified against MOT records
Why check a car's mileage history?
Mileage clocking remains one of the most common forms of used car fraud in the UK. An estimated 2.5 million clocked cars are on British roads, according to the RAC. A clocked car has had its odometer wound back to show fewer miles than it has actually covered, inflating its value and hiding its true wear. Our free mileage check uses the mileage recorded at every MOT test to build a complete mileage timeline, making clocking easy to spot.
Even without deliberate fraud, checking the mileage history helps you understand how hard a car has been used. A car averaging 8,000 miles per year has lived a very different life from one averaging 25,000. High annual mileage means more wear on the engine, gearbox, suspension and brakes.all of which translate into maintenance costs for the next owner.
If the seller's claimed mileage doesn't match the MOT records, you have a concrete, documented reason to walk away or renegotiate. It's one of the simplest and most effective checks you can do before buying a used car.
How to spot a clocked car
Mileage fraud remains one of the most common used car scams in the UK. According to industry estimates, a significant proportion of used cars show signs of mileage or identity fraud, and buyers can overpay substantially for clocked vehicles. Here is how to protect yourself.
What normal mileage looks like
Average UK annual mileage is around 7,100 miles (2024 figures). Diesel cars typically do more (8,000-10,000 miles per year) while petrol cars do less (6,000-8,000). A 10-year-old petrol car with 65,000 miles is normal. The same car with 25,000 miles is either a genuine low-use vehicle or has been clocked.
Warning signs in the mileage history
- Mileage drops between MOT tests - the most obvious sign. Mileage should only ever increase. Any decrease is either a recording error or deliberate tampering.
- Sudden change in annual mileage - if a car did 12,000 miles per year for five years then suddenly shows 3,000 in the year before sale, the odometer may have been wound back.
- Suspiciously round numbers - an odometer reading of exactly 60,000 is less likely to occur naturally than 60,247.
Physical signs to check in person
A car claiming 30,000 miles but showing heavily worn pedal rubbers, a shiny steering wheel rim and sagging driver's seat bolsters has done far more. Check the condition of the gear knob, armrest and door card grab handles. Excessive stone chips on the front bumper and bonnet also indicate high motorway mileage.
Your legal rights
Selling a clocked car is illegal under the Consumer Protection from Unfair Trading Regulations 2008 and the Fraud Act 2006. If you buy from a dealer, the Consumer Rights Act 2015 gives you the right to reject within 30 days. For private sales, report the seller to Trading Standards.
Frequently asked questions
How can I tell if mileage has been clocked?
The clearest sign is a mileage reading that drops between MOT tests. If a car recorded 80,000 miles at one test and then 62,000 miles a year later, the odometer has been wound back. Less obvious clocking shows as a sudden change in the car's annual mileage pattern, for example consistently doing 12,000 miles per year and then suddenly showing only 3,000 in a year.
What is normal annual mileage for a car?
The UK average is around 7,000 to 10,000 miles per year. Cars used for commuting or business tend to be higher (12,000-20,000+). Cars used as second vehicles or in cities tend to be lower (3,000-6,000). There is no single "normal".what matters is whether the pattern is consistent and whether the seller's claims match the records.
How accurate is MOT mileage data?
MOT mileage is recorded by the testing station at the time of the test. It is read directly from the car's odometer and entered into the DVSA system. While it is possible for an odometer to be tampered with before a test, the historical sequence of readings makes this very difficult to hide over multiple years.
What if there is a mileage discrepancy?
If the MOT records show a mileage discrepancy, either a drop in mileage or an implausible jump, treat it as a serious red flag. Ask the seller to explain the discrepancy with documentation. If they cannot, walk away. A clocked car is not just overpriced; it may have hidden mechanical wear that makes it unsafe.
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Mileage data sourced from DVSA MOT testing records. Last updated September 2026.