Some of the game's cheats are matched to the bonus code of each game, which in turn will largely vary. Some of the following codes will only work with discs that have the same bonus code. Use the following trick to change it. For example, if you want to use the cheats for "7510" but your number is different: delete your saved game file, then start the game. You will have a new bonus code. Repeat this process until you get the desired number. Type in the following codes to get the desired effect.

Unlock Honda Championship - everything

Richard

Petty's stock car - Richard Petty

Michael Andretti's 2003 IRL car - Michael Andretti

Honda Tournament - Successfully complete World Tour mode

Enter everything as a case-sensitive code (demo version)
Enter Q5QC6HTKTWP1B as a code (bonus code 1027)
Enter X4K7T2DPL7VU5 as a code (bonus code 5205)
Enter Q2MH3669N7859 as a code (bonus code 7510)

Boosts

Enter GP7AYU2VPK311 as a code (bonus code 1027)
Enter A0AERR56V7TF4 as a code (bonus code 2945)
Enter NBWQV0621K46A as a code (bonus code 5354)
Enter 5G31UN7U5JN78 as a code (bonus code 5461)

Invincible cars

Enter 6H61G288KBVP5 as a code (bonus code 2945)
Enter 5TP0CEX1RUFX3 as a code (bonus code 5354)

Championships

Enter X78YU8VLFXB1G as a code (bonus code 2945)
Enter 1QYERGJN8BDR4 as a code (bonus code 5354)
Enter BW3F7026KA24J as a code (bonus code 5461)

Bonus championships

Enter 9BDLAD4ETGQ77 as a code (bonus code 2945)
Enter 4YTND1RWFQ679 as a code (bonus code 5354)

Slot racer

Enter HXDDAWA94C3B4 as a code (bonus code 2945)
Enter 5E3V106QGHCE8 as a code (bonus code 5354)

Toy car

Enter E1WNYA9YW3K25 as a code (bonus code 2945)
Enter UX4Q0T9JX2JQ2 as a code (bonus code 5354)

All FMV sequences

Enter R4XM651GCWVJJ as a code (bonus code 1027)
Enter L98W1PNNDFXFH as a code (bonus code 5354)
Enter 06T5AGR7UFE54 as a code (bonus code 5461)

Turbo

Enter GP7AYU2VPK311 as a code (bonus code 1027)