"Clocking" — winding back the odometer — adds thousands of pounds to a used car's price and hides how worn it really is. It is easier to detect than most sellers hope, because the mileage trail is public.
Digital dashboards made clocking easier, not harder: cheap "mileage correction" tools can set any figure in minutes. Industry estimates put clocked cars in the hundreds of thousands on UK roads. Altering the odometer is not itself illegal in the UK — but selling the car without declaring it is fraud.
Since 2005, every MOT test has recorded the odometer reading, and that history is public. A genuine car's mileage climbs steadily — roughly 6,000–10,000 miles a year for average use. A clocked car shows one of these patterns:
Japanese and European imports often have kilometre odometers, and MOT stations sometimes record the reading under the wrong unit. That can make a genuine history look like it fell. Check whether the units flip between tests before assuming fraud — a real clocking shows a fall in the raw numbers, not just the converted ones.
Type the plate into Vekkle for MOT & mileage history with clocking detection, tax status and live market value. No sign-up needed to start.
Run a free checkWalk away, or ask the seller for the paper trail (invoices, old MOTs) that explains it. If you have already bought the car, you may have a claim against the seller — keep the advert, messages and the history you found.