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.

Successfully complete the game with all 51 Gold trophies to unlock all cheats and special cars. You will also unlock a final Head-to-Head race with Ravenwest consisting of three laps around Circuit de la Sarthe that must be done on the Extreme difficulty. The race is worth $20 million and also awards you bonus cars, allowing you to have a total of 47 cars in your garage.

Win all trophies and complete all Head-to-Head races in Grid World to unlock the Ninja difficulty.

Unlock all of the other regional licenses, then earn 1 million Global Points to get the Global license. Note: All other licenses that have not been acquired yet will also become unlocked.