Instructions
Create save files for "Burnout 3" and "Madden NFL 06" on the same card or hard drive as your "Burnout Revenge" save. According to GameSpot, this is the only way to unlock the extra cars hidden in "Burnout Revenge." These save files must be created prior to creating a "Burnout Revenge" save file, otherwise the extra cars will remain locked. The "Burnout 3" save file will unlock the Dominator Assassin car and the "Madden NFL 06" save file will unlock the Madden Van.
Finish 100 percent of the game. This will unlock the Revenge Racer.
Achieve elite rank. This will unlock the black elite racer.
Finish the White Mountain Challenge to unlock the Criterion GT Racer.
Finish the Sunshine Keys Challenge to unlock the custom classic car.
Finish the Central Route Challenge to unlock the EA GT Racer.
Finish the Motor City Challenge to unlock the Etnies Racer.
Finish the Eternal City Challenge to unlock the Euro Classic LM.
Finish the Lone Peak Challenge to unlock the Hot Rod.
Finish the Rank 10 Ultimate Revenge GP to unlock the Logitech World Racer.
Finish the Angel Valley Challenge to unlock the Low Rider.
Finish the Eastern Bay Challenge to unlock the Nixon Special.
Earn any medal. Every medal you earn unlocks another car, according to Cheats Codes Guides.