Unlockables:
When you first boot up the game you receive a bonus code that you must call Codemasters with and receive a password. Here are all the various bonus code available with the accompanying password.
Unlock All Cars:
Bonus Code 0664: OQJAMA
Bonus Code 0976: MCKLLB
Bonus Code 1154: WWACNN
Bonus Code 1432: FMGUOT
Bonus Code 1866: OQJHOK
Bonus Code 3430: QWIZEK
Bonus Code 8405: YZZSSR
Bonus Code 8622: IDMUZH
Unlock Baja Buggy:
Bonus Code 8622: FIEWHO
Bonus Code 3430: KBTDXN
Bonus Code 8405: DLBNNN
Bonus Code 1432: VURCNU
Bonus Code 0976: NQFIPE
Bonus Code 1154: PHOUOT
Unlock Battle tank:
Bonus Code 0976: LHZWOH
Bonus Code 1432: ZIIUUR
Bonus Code 1432: ZSSDBU
Bonus Code 1866: LWXEIF
Bonus Code 3430: MRJBJY
Bonus Code 8405: BFKIGJ
Bonus Code 8622: KOHOQO
Ford Super Focus:
Bonus Code 0976: OQJZZY
Bonus Code 1154: VYNFVA
Bonus Code 1384: GOSTHS
Bonus Code 1432: LPGXUE
Bonus Code 1866: WSNBSB
Hovercraft:
Bonus Code 0976: BSBNNN
Bonus Code 1154: IYYRUV
Bonus Code 1384: EUXWHO
Bonus Code 1432: NXDLLB
Bonus Code 1866: BKQBAU
Bonus Code 1154: MHXIPE
Bonus Code 0664: OHCTHS
Bonus Code 0976: IURUOT
Jet:
Bonus Code 8405: SHYOQO
Bonus Code 8622: QXCIGJ
Bonus Code 1866: RUGSSH
Bonus Code 3430: ZVISSZ
Bonus Code 1154: LOWWOH
Bonus Code 1432: YJBATU
Bonus Code 0664: BKQXVE
Bonus Code 0976: GOBUUR
R/C Cars:
Bonus Code 0976: WWBDBU
Bonus Code 1154: AQVATU
Bonus Code 1432: GBPWOH
Bonus Code 1866: PFKCXQ
Bonus Code 3430: SCFNVR
Bonus Code 8405: UZXQMU
Bonus Code 8622: ODSXAS
Gamecube games and cheats sorted
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Other -
ALL Gamecube cheats
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