Collectors Edition cars:
Successfully complete the indicated event(s) in the Challenge Series to unlock the corresponding car:

Aston Martin DB9 (Exotic) - Defeat Wolf in Boss Battle mode.
Dodge Charger RT Classic (Muscle) - Defeat the 21st Muscle Car Gang.
Jaguar XK 2007 (Exotic) - Successfully complete all three Turf War races.
Mazda RX7 (Tuner) - Defeat Kenji in Boss Battle mode.
Nissan 240SX (Tuner) - Successfully complete all three Checkpoint challenges.

Crew members:
Successfully complete the indicated task to unlock the corresponding crew member:

Sal - Joins after four to six races.
Yumi - Joins after defeating Kenji/Bushido.
Colin - Joins after defeating Wolf/TFK.
Samson - Joins after defeating Angie/21st Street.
Nikki - Joins after defeating all three beginning Bosses.

Easier Speedtrap races:
Activate your Blocker/Brawler before the race. While racing and coming up towards a speed trap, stop your Blocker/Brawler. Your Blocker/Brawler will stop, crash the other car(s), and drastically slow down their time. Remember that the peak Blocker/Brawler moment is just before the speed trap.

Easy money:
Once you have completed Career mode, set Samson as your wingman with Neville also in your crew. You can repeat any races you have already completed in which a wingman is used and recieve $750 for each race completed instead of the $500 without. This can also be used on first time races for maximum cash output.

Extra money:
At the title screen, press Down, Up, Left, Down, Right, Up, Square, Triangle to get an extra $10,000 in Career mode. If you entered the code correctly, a message will appear.

Infinite crew charge:
At the title screen, press Down, Up(2), Right, Left(2), Right, Square. If you entered the code correctly, a message will appear.

Infinite nitrous:
At the title screen, press Left, Up, Left, Down, Left, Down, Right, Square. If you entered the code correctly, a message will appear.

Infinite SpeedBreaker:
At the title screen, press Down, Right(2), Left, Right, Up, Down, Square. If you entered the code correctly, a message will appear.

Need For Speed Carbon Logo Vinyls:
At the title screen, press Right, Up, Down, Up, Down, Left, Right, Square to unlock the Need For Speed Carbon Logo Vinyls. If you entered the code correctly, a message will appear.

Need For Speed Carbon Special Logo Vinyls:
At the title screen, press Up(2), Down(4), Up, Square to unlock the Need For Speed Carbon Special Logo Vinyls. If you entered the code correctly, a message will appear.