Enter Career mode. Select the "Secret Code" option at the menu.
| Code: | Result: |
| SAFETYNET | Five free repair markers |
| CASHMONEY | $10,000 |
| HORSEPOWER | Chevrolet Chevelle SS in Career mode |
| ZEROZEROZERO | Coke Zero Golf GTI In Career mode |
| MITSUBISHIGOFAR | Mitsubishi Lancer Evolution in Career mode |
| UNLOCKALLTHINGS | Master code |
| ITSABOUTYOU | Audi TT 3.8 Quattro in Career mode |
| WORLDSLLONGESTLASTING | Energizer Lithium Dodge Viper SRT10 in Career mode |
| LEIPZIG | Disable UNLOCKALLTHINGS code. |
| 1MA9X99 | $2,000 |
| 1Mi9K7E1 | 10000 CASH |
| REGGAME | 4000 CASH |
| W2iOLLO1 | 4000 CASH |
| CASTROLSYNTEC | Castrol Syntec Vinyl |
| ENERGIZERLITHIUM | Receive bonus vinyl sticker |
| UNLOCKALLTHINGS | Unlock map, cars (Dodge Viper SRT10, 2004 Pontiac GTO, Chevrolet Cobalt SS and Nissan 240SX), stage 4 parts. |
| Collectorsed | unlock Acura Integra, Acura nsx, Audi rs4, Lexus is350 and solstice gxp in collectors edition |
Complete the following achievements to unlock Xbox Live Gamerscore points.
Have a saved game file from Need For Speed Carbon to unlock three additional repair tickets and a total repair ticket.
Defeat the indicated opponent in Career mode to unlock the corresponding car.
Defeat the indicated opponent in Career mode to unlock the corresponding car.
With a saved game file from Need For Speed Carbon, you receive an extra $10,000 when you start a career.
Enable the "Master Code" then go to the car lot. You will find a red Acura Integra available for $0. You can sell it for $7,200 and can repeat this as many times as desired. You can also sell the other cars obtained when that code is enabled.
The best dragster is the Nissan 240SX. The first chance you get, make a 240SX your drag choice. Put on all the best performance parts you can afford. Remember, you need a lot of speed and traction. After you start setting new track records you will be invited to race Karol Monroe the Drag King. This car will not perform in the Wheelie comp, as it does not have enough power to do so.
Enter into an event in any of the Street King Tiers. You will be given two free Repair Markers. Leave the Race Day and reenter to get two more. Repeat this as many times as desired.