Quick Cash
Several codes provide varying amounts of money, which you can use to upgrade your car or buy new vehicles. Enter "1MA9X99" to get $2,000, "W2IOLL01" to net $4,000, "L1IS97A1" to earn $8,000 and "1MI9K7E1" to get $10,000.
Free Cars
Normally, you must play through the game to unlock certain vehicles. To get them the fast way, enter some cheat codes. Enter "HORSEPOWER" and you will acquire the Chevelle SS. For the Audi TT, input the code "ITSABOUTYOU." The code "WORLDSLONGESTLASTING" unlocks the Dodge Viper SRT10. Use the super cheat "UNLOCKALLTHINGS" to open up several cars, including the Nissan 240 SX, Chevy Cobalt SS, Pontiac GTO and Dodge Viper SRT 10.
More Detail
Get bonus vinyls to use in detailing your car with the code "ENERGIZERLITHIUM." Earn a special Castrol Syntec vinyl by using the code "CASTROLSYNTEC."
Cheat Mechanic
Get five repair markers for free by entering the cheat "SAFETYNET." This should keep you on the road and out of the shop.