Enter the following codes at the bonus screens:
Note: The codes are different from game to game, depending on the bonus number. Try all three and you should find, one will work.
All Cars:
XKIMCF, LEZEJD, or SAFREA
All Championships:
QTRRDJ
All Challenges:
LSDUXH
All Tracks:
QTRIKX, TMYTKO, NIQHLT, NPXOOY, MPXOOY, or HZCGYP
Enhanced Damage:
DAMAGE
No Damage:
IHHBIV, OATRYU, or MMMFJL
Pro Race Driver Tracks:
LQJFFA
Realistic Handling:
SIM, VIBAKH or LJLZEL
View Credits:
CREDITS or XQIXCJ