Test Drive 4 Codes -

Easy course record:
Have the checkpoints on, go to the 1/4 mile, select the Jaguar, and get a time under 11.46.

Bonus tracks:
Set a course record and enter KNACKED as a name to race on mirrored tracks at night. Note: The "Traffic" and "Timer" options must be enabled to use this code.

Bonus cars:
Set a course record and enter SAUSAGE as a name. The Viper GTSR, TVR 12/7, '69 Dodge Daytona, and Pitbull Special will now be accessible. Note: The "Traffic" and "Timer" options must be enabled to use this code.

Nitro boost:
Set a course record and enter WHOOOOSH as a name. Use the horn during game play for a nitro boost. Note: The "Traffic" and "Timer" options must be enabled to use this code. Do not activate the turbo feature in first gear.

Small R/C cars:
Set a course record and enter MJCIM.RC as a name. Note: The "Traffic" and "Timer" options must be enabled to use this code.

Flight mode:
Set a course record and enter FLY as a name. Press X to hover, and Up to move forward.

Explicit FMV sequence:
Press Up, Left, Circle, X, then select the option that shows the game's development team. The last scene in the sequence will be altered.

Hint: Clearing the San Francisco jump:
Enable the "Nitro boost" code. Go to the jumps and slow down to the point that your car is barely moving. Hit the turbo to go down the hill quickly. You must reach 169 or 170 mph to perform the stunt, and will only work with cars that have decent acceleration.

Hint: Easy course record:
Go to the drag race and select the Cobra. Race and get a time under 12 seconds. You will be able to get a course record easier and activate any of the cheats. Note. Even if you do not defeat your opponent, you can still enter a cheat if you beat the desired time.

Hint: Easy 180º turn:
This trick works with all cars. If you get turned around, hit the turbo and flip an easy 180º.