Part of the fun in “Need for Speed: ProStreet” comes from acquiring all 76 cars and then customising and fine-tuning those cars to suit your racing style. Naturally, the more vehicles you have, the more entertainment you can get from customising them. Fortunately, “ProStreet” has a large selection of vehicles to choose from and, while most of these vehicles must be purchased, many of them can be unlocked through cheat codes or other means.
Access “Career Mode” once “Need for Speed: ProStreet” has started and then select “Code Entry.”
Use the code “UNLOCKALLTHINGS” to unlock the Nissan 240 SX, Pontiac GTO, Chevy Cobalt SS and Dodge Viper SRT10.
Use the code “REGGAME” to unlock the Chevrolet Camaro Concept, Ford Mustang GT 500 and the Nissan R34 Skyline. This cheat code also gives you £6,500 every time you use it.
Use the codes “ITSABOUTYOU,” “ZEROZEROZERO,” “ENGERGIZERLITHIUM,” “HORSEPOWER” and “MITSUBISHIGOFAR” to unlock the Audi TT 3.8, Coke Zero Volkswagen GTI, Energizer Lithium Dodge Viper SR10, Chevrolet Chevelle SS and Mitsubishi Lancer Evolution, respectively.
Use the code “COLLECTORSED” to unlock five vehicles unique to the collector's edition of “Need for Speed: ProStreet”: the Audi RS4, Lexus IS350, Pontiac Solstice GXP and the Acura Integra and NSX.
Defeat the Grip King, Ray Krieger, to get his 2008 BMW M3 E92.
Defeat the Drag King, Karol Monroe, to get her 2006 Ford Mustang GT.
Defeat the Speed King, Nate Denver, in order to get his 1965 Pontiac GTO.
Defeat the Drift King, Aki Kimura, to get her Mazda RX-7.
Defeat the Showdown King, Ryo Watanabe, to get his Mitsubishi Lancer Evolution X.
Purchase the remaining vehicles. If you do not have enough cash, sell off some of the vehicles you unlocked with cheat codes and then re-enter the cheat codes to get those vehicles back. You can keep doing this in order to get enough money to purchase advanced parts for all of your vehicles as well.
If you are too impatient to complete your car collection, jump ahead to the Four Elite Kings races by re-entering the “UNLOCKALLTHINGS” code.
The "COLLECTORSED" code may not work if you use a patch to upgrade your version of "ProStreet."