Motorists are being urged to stop filling their petrol tanks after the first 'click' - to prevent damage and save cash.
The common practice, known as 'topping off', could not only waste money but could also cause as much as £500 of damage to a vehicle, an expert has said. Graham Conway, managing director of UK leasing firm Select Car Leasing, says drivers should fight the urge to round up to the nearest pound.
He explained: "That’s because it’s likely to still dispense some fuel that won’t end up in your tank. If you ignore the first click you could be filling past the top of the fuel tank port, and that extra fuel will end up running into the small drain under the entry and onto the ground beneath your vehicle.