Need for Speed PS Cheats

 Lunar Springs Track:


Start a new game, and at the Game Mode screen, select 
One Player. Select Tournament, and enter the password MQKZCL. Press Start, 
and at Race location screen, press S. This takes you back to the Race Type screen. 
Enter Single Race. At the Race Location screen, highlight the Rusty Springs track 
and simultaneously press and hold L1, R1, and T. A new track appears!!! 
 Machine-Gun:


  Start a game in Head to Head mode, pick your car, then 
  your opponent's. Then press and hold Up-Left, L1, O, and S. Hold these buttons 
  through the loading screen. When the race starts, instead of a horn (usually 
  activated by pressing Up), you have a machine gun!!! 
 Lost Vegas Track:


  Select Tournament Mode and enter the password: TSYBNS, 
  then press start. When you cycle through tracks at Race Locations screen, check 
  out the new track!! 

Rally Mode:

Select either Time Trial, Head to Head, or Single Race. Simultaneously press and hold L1 and R1 at any track at the Race Location screen. The name changes....

Warrior Car:

Select either Time Trial, Head to Head, or Single Race mode. At car-select screen, simultaneously press and hold L1, L2, R1, R2. A new car appears...

No-Mercy Mode:

At Race Type screen, simultaneously press L1 and R1. Head to Head mode now changes to No Mercy...

Arcade Mode:

At Race Location screen, scroll down to the number of laps and simultaneously press and hold L1 and R1. The mode changes to Arcade Mode.

Thanks to Revolution reader Vox Humana!