Roadkill Cheats

Find a short hill, then hold Down and jump it.

All Vehicles:
During game-play pause the game and highlight the Map option. Then press the following combination: Up, Down, Up, Down, Y, A, Y, A, B, X(2), B.
You will hear the sound of an engine if the code has been entered correctly.
Restore Health:
During game-play pause the game and highlight the Map option. Then press the following combination: B, X, B, X, B, X, B, X.
You will hear the sound of an engine if the code has been entered correctly.
Infinite Ammunition:
During game-play pause the game and highlight the Map option. Then press the following combination: Y, B(2), X, Y, B(2), X.
You will hear the sound of an engine if the code has been entered correctly.

Pause the game and highlight "Map", then enter these codes:
Y, B, B, X, Y, B, B, X-Infinite ammunition
Y, A, A, Y, B, X, X, B, A, B, X, Y-Powerups respawn immediately
B, X, B, X, B, X, B, X-Restore health

Press Start to pause game play and highlight the "Map" option. Then, press Y, X, A, B, Y, X, A, B, Down. The sound of an engine will confirm correct code entry.

If a gang of cops or rival gangs are coming after you, learn to drive and shoot in reverse. Back away from the cars that are about to explode or the explosion will take off a tremendous amount of armor.