Reversed tracks:
Beat all thirty tracks you can race any of the tracks in the opposite direction.
Max Power track:
In arcade mode, highlight the Peru course and press Circle, Square, R2, R2, R1, R1.
GTi cars:
In arcade mode, highlight the Rome course and press L1, Circle, R1, Square, L2, Square.
Sport cars:
In arcade mode, highlight the USA course and press R1, Square, L2, Circle, R2, Circle.
R/C cars:
In arcade mode, highlight the USA course and press Square, L1, R2, L2, Circle, R1
All tracks:
In arcade mode, highlight the Africa course and press R1, R2, R1, L1, Square, L1.
Performance cars:
In arcade mode, highlight the U.K. course and press R1, Square, L1, Circle, R2, Circle.
Skip 1 lap on Africa stage 1:
This works in two player only. To skip 1 lap on Africa stage 1, you must start the first lap. Then as you come back around to start lap 2 drive your car off the edge into the water just before you get to the checkpoint (Note that the car must land past the checkpoint in the water). Then your car will be replaced behind the checkpoint so you just have to drive through the checkpoint and you have finished the race.