xbox 360-GRID

Bonus cars
At the main menu, select "Options", "Bonus Codes", then "Enter Code". Then, enter one of the following codes to unlock the corresponding car in Grid World and Raceday mode. Note: You must have $40,000 to start your own team to get the option to view and test drive the bonus cars.
Drift cars
Enter "TUN58396" as a code to unlock drift cars.
Stage 1 classic muscle cars
Enter "MUS59279" as a code to unlock the Stage 1 classic muscle cars.
Buchbinder 320si Livery
Enter "F93857372" as a code to unlock the Buchbinder 320si Livery.
GameStation BMW 320si Livery
Enter "G29782655" as a code to unlock the GameStation BMW 320si Livery.
Micromania Pagani Zonda R Livery
Enter "M38572343" as a code to unlock the Micromania Pagani Zonda R Livery.
Play.com Aston Martin DBR9 Livery
Enter "P47203845" as a code to unlock the Play.com Aston Martin DBR9 Livery.