| Alternate Title Screen and Ending Screen |
| Completing every single cup with a first place unlocks two new alternating Title Screens and one new Ending Photo. |
| Code | Result |
| Completing every single cup with a first place unlocks two new alternating Title Screens and one new Ending Photo. | Alternate Title Screen and Ending Screen |
| Courses |
|
| Code | Result |
| Win at least 3rd place in Banana Cup and Shell Cup | Leaf Cup |
| Win at least 3rd place in Star Cup | Special Cup |
| Win at least 3rd place in Flower Cup and Mushroom Cup | Star Cup |
| Win at least 3rd place in Leaf Cup | Lightning Cup |
| Mirror mode |
| Reach 1st place in all cups at 150cc class. |
| Code | Result |
| Reach 1st place in all cups at 150cc class. | Mirror mode |
| Unlockable Bikes |
| After meeting the requirements, some unlockables may require you to back out of your save file and reselect it. Note: In different countries, the bikes have different names but the unlocking method is the same. |
| Code | Result |
| Win Mirror Leaf Cup | Bubble Bike (small bike) |
| Win 150cc Star Cup | Quacker (small bike) |
| Play Time Trials on 8 different courses | Magikruiser (small bike) |
| Win 100cc Lightning Cup | Zip Zip (medium bike) |
| Attain at least 1 Star Rank for all 100cc Wii Grand Prix Cups | Sneakster (medium bike) |
| Win Mirror Star Cup | Dolphin Dasher (medium bike) |
| Win 100cc Star Cup | Shooting Star (large bike) |
| Win Mirror Special Cup | Phantom (large bike) |
| Unlock 12 Expert Staff Ghost Data in Time Trials | Spear (large bike) |
| Characters |
|
| Code | Result |
| Play Time Trials on 16 different courses or win 250 Wi-Fi matches. | Birdo |
| Unlock 8 Expert Staff Ghost Data in Time Trials | Baby Luigi |
| Unlock 4 Expert Staff Ghost Data in Time Trials | Funky Kong |
| 1 Star in all 150cc Wii-Cups | Dry Bowser |
| Have a Super Mario Galaxy savefile and she will be unlocked after 50 races or get 1 star in all 8 Mirror Mode Cups | Rosalina |
| Win 150cc Special Cup | Daisy |
| 1 Star in all 100cc Retro-Cups | Bowser Jr. |
| Win 100cc Leaf Cup | Dry Bones |
| Win 100cc Special Cup | Mii (Outfit A) |
| 1 Star in all 50cc Wii-Cups | Baby Daisy |
| Win 50cc Star Cup | King Boo |
| Complete retro 50cc Cups | Diddy Kong |
| Play Time Trials on all 32 different courses or win 1000 Wi-Fi matches. | Toadette |
| Unlock all 32 Expert Staff Ghost Data in Time Trials | Mii (Outfit B) |
| Unlockable Karts |
| After meeting the requirements, some unlockables may require you to back out of your save file and reselect it. Note: In different countries, the karts have different names but the unlocking methods are the same. |
| Code | Result |
| Attain at least 1 Star Rank for all 50cc Retro Grand Prix Cups | Cheep Charger (small kart) |
| Win Mirror Lightning Cup | Blue Falcon (small kart) |
| Win 50cc Special Cup | Piranha Prowler (large kart) |
| Win 150cc Lightning Cup | Honeycoupe (large kart) |
| Win 150cc Leaf Cup | Royal Racer (medium kart) |
| Win 50cc Leaf Cup | Turbo Blooper (medium kart) |
| Attain at least 1 Star in all 150cc Retro Cups | Aero Glider (large kart) |
| Unlocked 24 Expert Staff Ghosts | Sprinter (Medium Kart) |
| Beat 50 opponents during Wi-Fi play or unlock one expert staff ghost | Tiny Titan (small kart) |
| Have a star by your nickname |
| Playing extraordinarily well in Grand Prix races can produce a Star Ranking upto 3 at the end results instead of the standard "C, B or A."Collecting these stars in all Grand Prix's adds a Star Icon next to your name in WiFi Races and on the Results Screen for your opponents to see.(Note: Say, if you get a Three star rating in every Grand Prix except one which you got a One star rating in. You would get a One starred nickname until you manage to upgrade the rank.) |
| Code | Result |
| Get a one star rating in every Grand Prix | One starred nickname |
| Get a two star rating in every Grand Prix | Double starred nickname |
| Get a three star rating in every Grand Prix. | Triple starred nickname |
| Golden Wii Wheel |
| Use the wii wheel extensively in all the modes, when you go online a golden wii wheel will be next to your name. |
| Code | Result |
| Use the wii wheel extensively in all the modes, when you go online a golden wii wheel will be next to your name. | Golden Wii Wheel |
| Karts and Bikes versions of 50cc and 100cc |
| You can unlock Karts and Bikes versions of 50cc and 100cc(like 150cc, but slower) by completing all the cups in that CC.To activate these versions, press the + button on the Speed Select screen. |
| Code | Result |
| Place 1st, 2nd, or 3rd in all 50cc cups | 50cc(Karts and Bikes) |
| Place 1st, 2nd, or 3rd in all 100cc cups | 100cc(Kart and Bikes) |
| Quick Start |
When the countdown starts wait till the 2 starts to disappear and then press and hold the 2 button. So the 2 must still be visible but disappearing.
This will give you a boost at the start of the race. |
| Boost when recovering from a fall |
| When you fall into something, such as water or falling from rainbow road, when you land, if you hit 2 at the moment you hit the ground, you get a temporary boost. |
| POW Block Immunity |
| When you see the POW block on your screen and its about to hit you, just do the function you would normally use for a trick to create a shockwave for youself to become immune to the spin out the POW block creates (Control panel on GCN controller, Shaking Wii wheel, etc.). This can be done on both bikes and carts. Even though you don't loose speed or spin out, you still will loose the items you were carrying. |
| Change Mii Racer weight class |
| Go into the Mii Channel and change your Mii drivers weight, which will have an in game impact causing you to change weight class and have different cars. |
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