Definition of probationary prohibited vehicle (from 1 July 2007)
A vehicle that:
-has an engine with eight cylinders or more, or
-has an engine that is turbocharged or supercharged (except those listed in the probationary vehicle database). There are also some lower powered turbocharged or supercharged vehicles which have been exempted and can be operated by a probationary driver who has been given an exemption by VicRoads. Refer to lower performance turbocharged or supercharged vehicles and the probationary vehicle database for more information
-has an engine that has been modified to increase the vehicle's performance (other than a modification made by the manufacturer in the course of the manufacture of the vehicle, or
-a nominated high performance six cylinder engine (refer to the probationary vehicle database).