Grid Cheats

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Unlockable: Liveries

To unlock the liveries listed below, insert the password given into the in-game cheats menu.

Buchbinder 320si Livery

Enter "F93857372" as a code to unlock the Buchbinder 320si Livery.

eBay Motors Mustang

Enter "DAFJ55E01473M0" as a code to unlock the eBay Motors Mustang.

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.

Unlockable: All Drift Cars

To unlock all of the drift cars in the game automatically, insert TUN58396 into the in-game cheats menu.

Unlockable: All Muscle Cars

To unlock all of the muscle cars in the game automatically, insert MUS59279 into the in-game cheats menu.

Source: cheatcc.com & ign.com