- Completion bonuses
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.

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

- 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. Notice: You must have $40,000 to begin your own team to get the option to view and test drive the bonus cars.

GameStation BMW 320si Livery Enter 'G29782655' as a code to unlock the GameStation BMW 320si Livery.
Buchbinder 320si Livery Enter 'F93857372' as a code to unlock the Buchbinder 320si Livery.
Micromania Pagani Zonda R Livery Enter 'M38572343' as a code to unlock the Micromania Pagani Zonda R Livery.
Stage 1 classic muscle cars Enter 'MUS59279' as a code to unlock the Stage 1 classic muscle cars.
Drift cars Enter 'TUN58396' as a code to unlock drift cars.
Play.com Aston Martin DBR9 Livery Enter 'P47203845' as a code to unlock the Play.com Aston Martin DBR9 Livery.

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