Mileage clocking (also known as odometer fraud or "clocking") is the illegal practice of winding back a vehicle's odometer to show lower mileage than it has actually travelled. A clocked car appears newer and commands a higher resale value, making it attractive to dishonest sellers wanting to maximise profit. Running a mileage check as part of your vehicle history report is essential to identify vehicles that have had their odometers tampered with.
Clocking is a form of fraud that costs UK car buyers millions of pounds annually. A vehicle with inflated mileage history affects everything from fuel consumption to potential mechanical reliability, so buyers naturally prefer lower-mileage examples. This makes clocking an attractive fraud for unscrupulous sellers trying to deceive buyers and inflate vehicle values.
How Common is Clocking in the UK?
Mileage fraud is disturbingly common across the UK used car market. Industry estimates suggest that one in five second-hand vehicles sold privately may have had their mileage clocked at some point. This widespread problem affects car buyers' ability to trust used car sellers and makes running a comprehensive mileage check absolutely essential before purchase.
The rise of more advanced odometers in modern vehicles has made clocking more difficult but not impossible. Sophisticated electronic odometer tampering requires specialist knowledge, but it remains a significant issue. This is why checking MOT records and historical mileage data is crucial—these official records are much harder to falsify than the odometer itself.
How to Spot a Clocked Car
Several warning signs might indicate a vehicle has had its mileage clocked:
- Mileage inconsistencies - Decreasing mileage between MOT tests or test dates
- Unrealistic low mileage - Claims of 5,000 miles per year for an older vehicle seem suspicious
- Wear and tear mismatches - High wear (worn interior, steering wheel) despite low claimed mileage
- Service history gaps - Missing service records that should exist at lower mileage intervals
- Recent odometer changes - Evidence of recent odometer replacement or repair work
MOT Mileage Records as Verification
One of the most valuable tools for identifying clocked cars is comparing mileage across multiple MOT test records. Each MOT test records the vehicle's mileage at the time of testing, creating a historical record that's difficult to falsify. When you run a mileage check, you get access to these MOT records stretching back up to ten years.
By examining MOT mileage progressions, you can verify that the mileage has increased logically year-on-year. If mileage decreases or increases unrealistically between tests, this is a clear indicator of odometer fraud. This is why MOT history is such a powerful tool for identifying clocked vehicles.
Protecting Yourself from Clocking Fraud
Always request a comprehensive vehicle history check that includes detailed MOT records before purchasing any vehicle. Cross-reference the odometer reading on your viewing with the most recent MOT record. Ask for complete service history documentation. If the seller can't provide consistent records or if you spot any mileage inconsistencies, walk away from the purchase. The investment in a proper mileage check is small compared to the cost of buying a clocked car.