Asking for a favour can seem the cheapest, most convenient way to fix those common motoring problems. Replacing a broken headlight, fitting a new battery or wiper blade set all seem easy enough jobs for an ‘expert’ friend.

But as we find out in a series of three TV spots, motorists need to beware that no favour is free and the return favour might be a bit more costly than first thought.

Instead it is both safer and cheaper than a favour to use WeFit from Halfords.