Cars CodeBreaker Codes (USA, Europe)
This page contains CodeBreaker cheat codes for Cars (USA, Europe). If you're playing on an emulator you can usually input codes very easily by accessing a tab off the top of the toolbar. Anyone playing on a physical Gameboy will need to purchase a physical CodeBreaker device to use these codes.
If you're using an emulator and still can't figure out how to setup these codes, you're in luck! There's two common emulators for GBA games, the mGBA and VisualBoy Advance. Follow the link provided for the emulator you're using to be taken to a guide explaining how to get these codes working.
Master Codes (Must Be On)
9218CD0178F5
35783E8AA592
7A645A63E4A2
Drive-Thru-Walls: EC4A715AFE74
Have 99 Boltz: C02187A5C408
Max Boltz: 32015BF8 00FF
Stop Timer: 4C6B0F606673
Unlock Chick Hick: 32015BB3 0008
Unlock Doc Hudson: 32015BA7 0008
Unlock King June: 32015BBF 0008
(Unlock Character) Chick Hick: 837187A5A718
(Unlock Character) Doc Hudson: 8350D377B718
(Unlock Character) King: 03518F75371B