keithmac
Guru
Two friends at college each owned battered Renault 4s. Fortunately their MOT dates were few weeks out of sync. Bits were swapped from one car to the other so that each could each pass the test. Eventually an eagle-eyed MOT man spotted that the entire underside of one car was held together with pop rivets cunningly camouflaged by a skilfully-applied coating of mud.
I have a mate who years back used to spam his cars up for MOT, normally involved packing holes with carrier bags or newspaper then bodyfiller over the top with fake "weld" accents.
Ironically he now works for the DVSA (VOSA) as a vehicle inspector..