50% of cars unlocked...
	Extra option...
	Formula 1 mode...
	Go-Kart Code...
	High speed mode unlocked...
	Mini-mode...

Enter the password: /6Kb /xMi irLM +/22

Finish in first place in all the races in all four championship classes.

To access Formula 1 mode, play through the championship mode and beat all four of the classes with a first place in each race. You get a new car (Formula 1 racecar) after the last race. At the menu screen, the extra 2 option will be available.

Hold the L and R buttons. Then, push right on the D-pad and B simultaneously. You will hear a chime if you entered the code correctly. Go to the main menu, and you will see that you have unlocked the Extra 1 mode.

Enter the password: 2QjD +D1Q 9Fy2 5B0C.

Select championship mode and win the beginner, middle, and high speed classes. An "Extra" option will now be unlocked at the main menu. Select it to race in mini-cars.