- (figuratively) A person who is overly reliant on the use of their car, resisting any suggestion to use other means of transport.
- (Australia, New Zealand, derogatory) A bogan who is overly fond of his car or motorbike and enjoys showing it off and making noise with it.
- (Australia, New Zealand) A person involved in motor racing either as participant or dedicated spectator.
- (UK) A car enthusiast.
From petrol + -head.