Change Car Colors

To adjust the color of your craft, press the R button while selecting you car to scroll through the available paint jobs.

Larger Racers

At the ship selection screen:

Hold L + R + Z + C-Up + C-Down + C-Left + C-Right

Rotate Car

You can examine whatever car you got by using the C-buttons to check out all your cool stuff on it.

See what you have beaten with each racer on each difficulty

On the car selection screen highlight a car and then press C-left (novice), C-right (expert), C-Up (master) or C-down (standard) to see an image of the trophies you have earnt for that difficulty.

Shrinking cars!

At the screen where you select your racer, hold L+R and press C-left and C-down.

Stop vehicle rotating

To stop the vehicle rotating, in the colour and acceleration/speed change menu, simply press all 4 ''c'' buttons at once.

Unlock All Tracks, Vehicles and Difficulties

At the title screen, press start to get the mode select, and enter:

L-Shoulder, Z, R Shoulder, Up-C, Down-C, Left-C, Right-C, Start.

You should here a sound, not choose GP Race and a new difficulty will open up.

On the select course screen, a new set of random tracks called the X Cup are opened, and on the select machine scree, you now have access to every vehicle in the game.

Codes
Unlock All Tracks, Vehicles and Difficulties

At the title screen using the Classic Controller press + (start) to enter the Mode Select screen, then enter:

Up on the D-pad, L, R, Up on the R control stick, X, Y, ZR, + (start)

If entered correctly, you will hear a sound. Enter GP race and you should see Master difficulty unlocked.

On the Course Select screen you should see two new cups unlocked: Joker Cup and the X Cup.

Then on the Select Machine screen you will see every vehicle unlocked.
Code ................................... Effect
Up on D-pad, L, R, up on the right control stick, X, Y, ZR, + (start) All Tracks, Vehicles and Difficulties unlocked

Unlockables
Alternate Title/Main Menu Screens

Complete the following to unlock different Title/ Main Menu Screens
Unlockable ............................. How to Unlock
"Comic" ................................ Complete Jack, Queen and King Cups on all difficulty levels
"Mechanical Cutaway" ................... Complete Jack, Queen, King, and Joker Cups on all difficulty levels

Unlock Cups

Unlockable ............................. How to Unlock
Joker Cup .............................. Clear the Jack, King, and Queen Cups on Expert Difficulty.
Master Difficulty ...................... Win the Jack, Queen, King, and Joker Cups on all three difficulties.
X Cup .................................. Clear the Joker Cup on Expert Difficulty.

Unlock more vehicles

To unlock more rows of vehicles, you must obtain a number of X marks on the cups. You get an X mark for each difficulty you clear a cup on (If you clear a higher difficulty before clearing a lower one, you will receive an X for all difficulties up to the one you cleared).
Unlockable ............................. How to Unlock
2nd row of vehicles .................... 3 X marks
3rd row of vehicles .................... 6 X marks
4th row of vehicles .................... 9 X marks
5th row of vehicles .................... 12 X marks