Incidents of clocking rose by ten per cent between March and April last year, prompting calls for the ban of mileage correction devices to be banned.
An existing legal loophole means it is not currently illegal to alter a car’s mileage.
It is only a fraudulent act to knowingly sell a clocked car without disclosing that its odometer has been adjusted.
Simon Blackburn, chairman of the LGA’s Safer and Stronger Communities Board, said: “With up to 1.7 million clocked and potentially dangerous vehicles on UK roads, anyone buying a second-hand car should make as many checks as they can to ensure that the vehicle is showing its true mileage.
“Clocking is harming both reputable used car dealers and consumers, and unless the proposed EU ban on mileage correction services is brought forward and made part of UK law, thousands more cars will continue to be clocked over the next two years, jeopardising the safety of cars on UK roads.”