Clocked Car Check
Mileage fraud is still one of the most common problems in the UK used car market. A clocked car can cost you thousands in overpayment, unexpected repairs and reduced resale value.
Checking the MOT mileage history before you buy is the most reliable way to spot whether the odometer tells the truth.
Check the mileage history
See the mileage recorded at every MOT test, plus finance, write-off and theft data in one report.
From £15 • Instant results • £30,000 data guarantee
How mileage fraud works
Clocking is the practice of winding back a vehicle's odometer to make the car appear to have covered fewer miles than it actually has. It allows sellers to ask a higher price for a car that has seen more use and wear than the dashboard suggests.
With modern digital odometers, the process is disturbingly easy. Specialist tools — available online for under £100 — can reset a digital odometer in minutes. Unlike older mechanical odometers that required physical tampering, digital clocking leaves no visible trace on the instrument cluster itself.
Estimates suggest that hundreds of thousands of clocked vehicles are currently on UK roads. The practice is illegal under the Consumer Protection from Unfair Trading Regulations, but enforcement is difficult and the financial incentive is high — reducing a car's apparent mileage by 30,000 miles can add thousands to the asking price.
Warning signs of a clocked car
Mileage drops between MOT tests
The most telling sign. If the mileage recorded at one MOT is lower than the previous test, the odometer has almost certainly been tampered with.
Wear inconsistent with displayed mileage
Heavily worn pedals, a shiny steering wheel and sagging seats on a car claiming 30,000 miles should raise questions about whether the mileage is genuine.
Gaps in MOT history
Missing MOT tests around the time of a mileage reduction can suggest the car was kept off the road while the clocking took place.
Recent keeper change before sale
Clocked cars are sometimes passed through intermediaries or traded between dealers to create distance between the tampering and the eventual buyer.
Price seems too good for the mileage
A suspiciously low mileage figure on an older car, combined with a competitive price, can be a sign that the numbers have been adjusted to attract buyers.
Service history doesn't match
Stamps and receipts in the service book may show different mileage to what the odometer now reads. Cross-referencing documents with MOT records can reveal the inconsistency.
How a history check helps detect clocking
Every time a vehicle has an MOT test, the mileage shown on the odometer is recorded. A Carpeep report shows you that full timeline — the mileage at every MOT test — so you can see at a glance whether the figures increase consistently or whether something looks wrong.
If the odometer has gone backwards between two tests, or if there is an unusually large jump followed by a drop, those are strong indicators that the mileage has been tampered with. The report lays this out clearly so you do not need to piece it together from separate sources.
Combined with keeper history, you can also see whether the car changed hands around the time of a mileage anomaly — a common pattern with clocked vehicles.
What clocking means for you as a buyer
Buying a clocked car means overpaying for a vehicle that has covered more miles than you think. The financial impact goes beyond the purchase price: higher-mileage cars need more frequent servicing, wear parts faster, and are more likely to develop expensive mechanical problems sooner than expected.
When you come to sell, the next buyer's history check may reveal the discrepancy — leaving you with a car that is worth significantly less than you paid for it. Whether you are buying a used car privately or from a dealer, running the check now costs far less than dealing with the consequences later.
Check the mileage history
Enter the registration and see the MOT mileage timeline before you buy.
Instant results • All checks included
Protecting yourself from mileage fraud
Always run a vehicle mileage check before you buy. The MOT mileage timeline is the single most effective tool for spotting clocking because it uses official records that the seller cannot alter.
When you view the car, compare the dashboard reading with the most recent MOT mileage in the report. If the figures do not align, ask the seller to explain the difference. Look at the physical condition of the car too — worn pedals, a tired interior and heavy tyre wear on a supposedly low-mileage car are all reasons to dig deeper.
For a broader look at all the checks you should run before buying, see our full car history check page. You can also view a sample report to see how the mileage timeline is presented.
Final verdict
The mileage history tells the story the odometer might not
Clocking is hard to spot with the naked eye, but the MOT mileage record does not lie. A Carpeep report shows you the full mileage timeline so you can see whether the numbers add up before you hand over any money.
Check a car before you buy
Enter the registration and get the key facts before you commit to the car.
From £15 • Instant results • £30,000 data guarantee