Race the Lake Side course:
Press X + Y at the main menu. Normally this course is only available after finishing in first place at the end of the mountain track.

Mirror mode:
Hold Y + C on the select game screen.

Hyper car mode:
Hold X + C while choosing a car on the vehicle selection screen. Your car will have improved handling and speed.

Drive the Lancia Stratos:
Press X, Y, Z, Y, X at the title screen or main menu. Move to the right edge for automatic transmission, or the left edge for manual transmission at the car select screen. This car is normally only available after finishing in first place in normal mode with one car. To select the Lancia Stratos in arcade mode, choose the Celica MT or Delta MT, and press Down instead of pressing C to select the car. Note: This car will not be included in the saved game file.

Replay zoom:
Hold Down + Z, then press L or R to zoom in or out during replays.

In-car replay:
Press A, B, or C during a replay.

Remove speed and time display:
Hold A + X + Z at the last option screen and keep the buttons held until the race screen appears.

Race against ghost car:
Enter time attack mode, select a car and race the track. After finishing the race, return to the track, and wait until the ghost car appears after the race begins.

Race against AM#3 best (PAL version):
Select any track and car in time attack mode. Highlight the 3 lap option, then hold X + Y and press C.