Enter the following codes at the main menu. 

Code         -         Effect 

R2, Right, R2, Right, Triangle, Left, Triangle, Left: Aston Martin V12 Vanquish
R1, L1, Left, Triangle, Left, Left, Left, L1: Black & White 
Square, Right, Square, Right, R2, Triangle, R2, Triangle: BMW Z8
R2, Triangle, Triangle, Triangle, R1, Square, Square, Triangle: Carrera GT NFS 
L1, Square, R2, R2, R2, R1, L1, Square: Championship Event 31 
L2, R2, Left, Square, Left, Left, Left, R2: Chrome Cars 
Triangle, left, left, left, L1, L2, L2, L3: GTR NFS 
R1, Square, Square, Square, R2, left, left, Square: F1 LM NFS 
L1, Triangle, L1, Triangle, Right, L2, Right, L2: Ferrari F50 
L1, Square, L1, Square, Right, R1, Right, R1: Ferrari F550 
Right, Left, Right, Left, R2, Square, R2, Square: Ford TS50 
Triangle, Square, Right, R2, Right, Right, Right, Square: Heavy Fog 
L1, L2, L1, L2, R1, Triangle, R1, Triangle: HSV Coupe GTS 
r, R2, r, R2, R1, L1, R1, L1: Lamborgini Diablo 6.0 VT 
Square, L1, Square, L1, Triangle, Right, Triangle, Right: McLaren F1 LM 
R2, R1, R2, R1, Left, Triangle, Left, Triangle: Mercedes CLK GTR 
L1, R2, R2, R2, left, square, square, R2: Murcielago NFS 
Left, Right, Left, Right, R1, R2, R1, R2: Porsche Carrera GT 
Left, Square, Left, Square, R2, R1, R2, R1: Pursuit Mustang Cobra R 
Left, R2, Left, R2, L1, R1, L1, R1: Corvette V06 
R2 Square R2 Square Triangle L2 Triangle L2: Ferrari 360 Spider 
Triangle, R2, Triangle, R2, Left, Square, Left, Square: Lotus Elise 
Triangle, L1, Triangle, L1, R1, Left, R1, Left: McLaren F1 
R2, Right, R2, Right, Triangle, Left, Triangle: Vanquish 

Unlockable Cars and Tracks:
Win the event listed to unlock the track or car shown:
National Forest: Complete Championship Event 1 
Outback: Complete Championship Event 11 
Mediterranean Paradise II: Complete Championship Event 14 
Unlock Diablo Murcielago: Complete Championship Event 21 
Alpine Trail: Complete Championship Event 22 
Desert Heat II: Complete Championship Event 25 
Unlock Porsche Camera GT: Complete Championship Event 26
Rocky Canyons: Complete Championship Event 27 
Tropical Circuit II: Complete Championship Event 28 
Tropical Circuit: Complete Championship Event 29 
Coastal Parklands: Complete Championship Event 4 
Scenic Drive II: Complete Championship Event 6 
Island Outskirts II: Complete Championship Event 8 
Rocky Canyons II: Complete Championship Event 9 
Unlock Corvette Z06: Complete Hot Pursuit event 13
Unlock Ford Crown Victoria: Complete Hot Pursuit Event 5
Super Bonus Event 32: Complete the hot pursuit and championship event trees including both of the bonus events
Calypso Coast II: Complete Ultimate Racer 26 
Calypso Coast: Complete Ultimate Racer Event 10 
Ancient Ruins II: Complete Ultimate Racer Event 12 
Autumn Crossing II: Complete Ultimate Racer Event 14 
Alpine Trail: Complete Ultimate Racer Event 15 
Autumn Crossing: Complete Ultimate Racer Event 17 
Outback II: Complete Ultimate Racer Event 25 
Palm City Island: Complete Ultimate Racer Event 28 
Palm City Island II: Complete Ultimate Racer Event 29 
National Forest 2: Complete Ultimate Racer Event 6 
Fall Winds II: Copplete Championship Event 24 
Vauxhall VX220: Lead all laps in a Single Race (one player, 4 laps, world racing, gull grid, advanced). 

Unlockable NFS Items:
Collect the following number of NFS points:
Unlock Ferrari 550 Barchetta: NFS Edition: Accumulate 1,000,000 NFS Points 
Unlock Dodge Viper-GTS [NFS Version]: Accumulate 1,500,000 NFS Points
Unlock Lamborghini Diablo VT 6.0 [NFS Version]: Accumulate 2,000,000 NFS points
Unlock McLaren F1: NFS Edition: Accumulate 4,000,000 NFS points. 
Unlock the McLaren F1 LM [NFS Version]: Accumulate 5,000,000 NFS points
Unlock Porsche 911 Turbo - Need For Speed Edition: Accumulate 800,000 NFS Points.