Project Gotham Racing Cheat Codes for XBox

Get Faster Mercedes:
Put in Reki for the driver's name

Unlock all the cars:
To get all of the cars including the Ferrari F50, enter your drivers name as "Nosliw" case sensitive. You will have all of the cars and the courses too.

Get VW beetle:
Use the easy difficulty setting and get 1000 kudos

Get extra Helmets:
After every hour of gameplay you will get 1 extra helmet

Get Panoz Esperate:
Get 25,000 kudos

Get Medal Pursuit Paint Jobs:
You get them after 5 hours of accumulated gameplay

Aston Marton V12 Vanquish
Win Arcade Race level four.

Boxster S
Win the Kudos Challenge level 2:

Camaro SS
Win all golds in Quick Race level two.

Carrera GT
Get 150,000 kudos.

Corvette Z06
Win the Kudos Challenge level 7.

Delfino Feroce
Get 75,000 kudos.

F355 Spider and 355F1
Win all golds in Quick Race level four.

Ferrari F50
Get 200,000 kudos.

Focus Cosworth
Win the Kudos Challenge level 3.

Lancer Evolution VII
Win all golds in Quick Race level three.

Lotus Exige
Get 50,000 kudos.

Opel Speedster
Win Arcade Race level two.

Panoz Esperante
Get 25,000 kudos.

RX-8
Win Arcade Race level one.

Skyline GTR
Win the Kudos Challenge level 5.

Subaru WRX
Win Arcade Race level three.

TT Roadster and TT Coupe
Win all golds in Quick Race level one.

TVR Tuscan Speed Six
Get 100,000 kudos.

Viper RT-10
Win the Kudos Challenge level 11.

Get New Helmets
The more hours you play, the more helmets you unlock. Every hour you play Project Gotham, you get another.

Get New Paint
To earn some nifty new paint jobs, rack up five hours of gameplay. That's it. Just play.

Wiener Mode
To unlock cars in a quick race, take a mini cooper or a slow car and use it in the race. Because you have a slower car, your opponents have similarly slower cars as well, and makes the race a little easier.
Submitted by: Alex

Unlock Everything
To unlock it all in one go, enter "Nosliw" as your character name. All tracks and cars will now be at your disposal.
Submitted by: Alex

Slower opponent cars
You can make the cars go slower if you drive in front of them, or you can get them to get away from you by driving next to them.
Submitted by: Alex

Pacific Heights: Big air
Enable the "Cheat mode" code. Go to time attack and select Pacific Heights and free roam mode. Select either the Tuscan or the Feroce. During game play, reverse all the way to the wall in back of you. Turn down the hill, making sure that it is a brick road. Drive as fast as possible down this set of hills to get major air and possibly hit a power line.