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Need for Speed Underground
Unlock all Circuit Tracks
Down, R1, R1, R1, R2, R2, R2, Square

Unlock all Sprint Tracks
Up, R2, R2, R2, R1, Down, Down, Down

Unlock all Drag Tracks
Right, Square, Left, R1, Square, L1, L2, R2

Unlock all Drift Tracks
Left, Left, Left, Left, Right, R2, R1, L2

Need for Speed Underground
Unlock Drift Physics in all modes
R1, Up, Up, Up, Down, Down, Down, L1

Unlock Level 1 Performance Parts
R2, R2, R1, R1, Left, Right, Left, Right

Unlock Level 2 Performance Parts
R1, R1, R1, R1, R2, R2, Left, Right

Unlock Level 2 Visual Parts
Down, Left, Up, Down, R1, R2, R2, Square

Unlock Nismo Car
Up, Down, Up, Left, Down, Down, Up, Right

Need for Speed Underground
Unlock Petey Pablo Car
Up, Up, Up, Up, Down, Up, Up, Right

Unlock Rob Zombie Car
Up, Left, Up, Up, Down, Left, Up, Right

Unlock Mystikal Car
Up, Right, Up, Up, Down, Right, Up, Right

Unlock Lost Prophets
Car Up, Up, Up, Right, Down, Down, Up, Right

Unlock Ford Focus
Left, Right, Up, R1, R2, R1, R2, Up

Unlock Subaru Impreza
Up, Down, Down, Up, L2, Up, L2, Down

Need for Speed Underground
Unlock Mitsubishi Lancer
Left, Left, Left, R1, R1, R2, R2, L2

Unlock Nissan Sentra
Right, Right, Right, L2, L2, R2, R2, Up

Unlock Hyundai Tiburon
Left, Right, Left, Right, Up, Down, Up, Down

Unlock Nissan 350Z
Right, Right, Down, Up, Square, L1, R1, L2

Unlock Nissan Skyline
Down, Down, L1, L2, L1, L2, L1, Down

Need for Speed Underground
Unlock Honda S2000
Up, Up, Down, Down, Up, Left, Square, R2

Unlock Toyota Supra
R1, R1, R2, R1, R2, R1, L2, L1

Unlock Nissan 240SX
Up, Down, Left, Right, Square, R1, L2, R1

Unlock Acura Integra
R2, R2, R1, R2, L2, L1, Down, Up

Unlock Acura RSX
R1, R2, Down, Left, Up, Right, Left, Right