All cars

Hold L + B and press Left at the title screen.

All tracks

Hold L + B and press Right at the title screen.

All tune ups

Hold L + B and press Up at the title screen.

Extra modes

Hold L + B and press Down at the title screen. Alternately, complete all the tracks in each class of championship mode to unlock one option. To unlock the Wire Frame mode option, successfully complete all the tracks in each class of championship mode under the expert difficulty setting.

Expert championship mode difficulty

Successfully complete the championship mode with a Gold rank on all tracks under the normal difficulty setting.

Cheats
Enter these codes at the title screen: All Cars: Press L + B, LEFT All Tracks: Press L + B, RIGHT All Tune Ups: Press L + B, UP Extra Modes: Press L + B, DOWN


Unlock Co-Driver Mode
Get first place in every race in world rally mode.

Unlock Hidden Track
Get first place in co-driver mode.