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Clocking? My car's odometer and sat-nav show different mileages

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A case of clocking? My car's odometer and sat-nav show different mileages

Q. My second-hand Mitsubishi’s odometer shows 20,000 fewer miles than does the built-in sat nav. My dealer says the odometer reading fits the service history. Any thoughts?
BC, Abingdon, Oxfordshire


A. We can’t be sure, but it appears that a previous owner may have had the car clocked and the sat nav, which has probably been recording the mileage since new, has given the game away.

As reported here (“It must be a wind-up”, March 6), there has been a sharp increase in clocking. If it occurs each year before the car is serviced, it’s not difficult to build up a convincing mileage based on the service history. We suggest you go back to your dealer and discuss the legal implications.
Sunday Times Driving Car Clinic: Tim Shallcross, advance driving advice

Tim Shallcross used to train AA patrols to fix cars. Now he advises the Institute of Advanced Motoring — read more from Tim here.

Email your question to or write to Car Clinic, Driving, The Sunday Times, 1 London Bridge Street, London, SE1 9GF, with a daytime phone number,
your address and as much detail about your car as possible. We can’t reply in person, so don’t send original documents or SAEs. Advice is given without legal responsibility.