All Cars and Tracks
During gameplay, press B, Right, B, Right, Up, B, Up.
Infinite Nitros
During gameplay, press Down, Up, Down, Up, A, X, A.
Skip Current Class
During gameplay, press Down, Right, Down, Right, A, X, A.
Extra Money
During gameplay, press A, Right, A, Right, Up, B, A.
Full pause screen
Pause the game and press X + Y.
Infinite money
While playing a game, press B, A, B(2), A, Down, Right, Left.
Play as Driver X
At the Main screen, press A, X, Right, Left, X, A.