A regular car that has been modified in the attempt to make it look like a sports car. Often has windows darkened with black see through sticky back plastic, an exhaust you could put your head in and more often than not has a huge bass music system in it that requires a small powerstation to run.
Look at that chav in his clio wanker mobile
A car, either a SAXO (usually in the blue colour that is also popular amongst Grannies) or a Subaru (either of the blue or black variety)
See that wanker in his wanker mobile, he looks like a cock - BARE laughs!