Spotting mileage clocking: 7 checks before you pay
Why clocking a 100,000-mile car to 60,000 is worth £3,000-£5,000 to a dishonest seller, why it's now easy to detect, and the seven specific checks that catch nearly every case.
A smaller reading adds thousands. A trail of evidence catches the scammers.
- MOT history is publicFree DVSA records show the odometer reading at every MOT.
- Service records helpDigital service records lock in mileage at each service.
- Physical wear tellsReal-world wear is hard to fake or manipulate.
- Red flags existCertain patterns are giveaways. Learn to spot them.
- Protect your moneyCheck before you buy. Walk away if in doubt.
Why it happens (and why it still works)
Mileage is the second-biggest variable in used-car pricing after age. On a typical £14,000 five-year-old hatchback, the difference between 100,000 and 60,000 miles is usually £3,500–£4,500, and the cost of altering a digital odometer is essentially zero, using rollback software marketed as "diagnostic calibration tools".
It persists because casual inspection won't catch it, trade chains can launder mileage between auctions when nobody pulls the MOT history, and some EU imports arrive already clocked. Older mechanical odometers had to be physically rolled back, which showed; modern digital clusters can be re-flashed silently.
The potential gain
£3,000 – £5,000
added to the resale price by dropping a 100k-mile car to 60k.
MOT history is public
The DVSA records the odometer at every MOT and publishes it free. If a six-year-old car has tests at 18,000, 32,000 and 47,000 miles and the listing shows 39,000, the car has been clocked. The MOT record is the gold standard for detecting rollbacks.
Service records are digital
Most cars built after 2014 carry a Digital Service Record on the manufacturer's portal, each entry stamped with the mileage. A service at 92,000 miles last March against a current reading of 65,000 is proof, and a DSR is much harder to fake than a paper book.
The 7 checks to run, in this order
The cheap ones first, the physical ones at the viewing.
1. MOT history match
Free, five minutes, before you even contact the seller. Mileage must increase at every test, and the latest reading should be a plausible distance from the advertised figure.
2. Service record cross-check
Match each service entry's mileage against the MOT timeline. A service at 75,000 followed by an MOT at 60,000 is impossible, and the MOT is authoritative.
3. Physical wear inspection
Steering wheel, gearshift knob, brake pedal pad, driver's seat bolster, footwell carpet, cup holder. No single one is conclusive; the pattern is.
4. The tyre check
Read the four-digit date code on each sidewall. Four tyres from 2019 on a car claiming 85,000 miles since then is impossible: they'd be illegal by now.
5. Wear on the controls
Driver's door card at elbow height, the window switch, the mirror control, the most-pressed climate button. A polished key fob on a 40,000-mile car is a tell.
6. Ask the seller
"What was the mileage when you bought it?" They should know within 1,000. "Where do you take it for service?" A specific answer can be verified by phone.
7. Paid history check
£10–£20 adds write-off markers, outstanding finance, stolen or cloned plate alerts, and mileage anomalies from sources the MOT record doesn't cover.
Red flags that should make you walk away
- MOT mileage goes down, or repeats year on year
- Long gaps in the MOT history
- Service mileages inconsistent with MOT readings
- Interior suspiciously perfect for the claimed mileage
- Seller won't share the service history or the VIN
- A DVSA "mileage anomaly" note in the record
Tools & resources
DVSA MOT history
Every MOT ever recorded for the vehicle, with the odometer reading. Free, no login.
gov.uk/check-mot-historyManufacturer portals
Most cars built after 2014 carry a digital service record. Any main dealer can print it from the VIN.
History check services
HPI, Auto Trader Check, Total Car Check and others aggregate write-off, finance and mileage data.
Video inspection
Ask for a live walkaround with today's date visible, especially when buying at a distance.
Buying unseen
What to do if you find clocking
- 1Walk away. Don't negotiate: mileage fraud is not a haggling position.
- 2If you've taken delivery, write to the seller demanding a refund. From a trader, cite the Consumer Rights Act: a misrepresented mileage isn't "as described" and can be rejected within 30 days.
- 3From a private seller the route is harder: small claims for misrepresentation under the Consumer Protection from Unfair Trading Regulations 2008.
- 4Report it to Trading Standards via gov.uk. They investigate dealers who clock systematically.
Clocking is fraud. You have rights. Use them.
Quick pre-purchase checklist
- MOT history pulled and reviewed
- Service history obtained and matched
- Tyres, brakes and interior inspected
- VIN checked and paid history run
- Everything consistent and believable
Verdict
If anything doesn't add up, keep looking. The right car will have a clean story. These seven checks take about 30 minutes in total and catch almost every clocked vehicle.
Smarter decisions start with better information
Every listing you save gets its MOT history pulled from the DVSA. We compare the advertised mileage against the record and flag anomalies: a confirmed one caps the listing's score at 30/100 regardless of anything else.
- Check MOT history & advisories
- Estimate running costs & tax
- Compare similar cars side by side
- Spot missing information in listings
