Test Drive 5 Cheats (PC)

To use these codes you must be fast enough to have your time entered on the high score
screen , make sure to turn checkpoints on from OPTION screen.
  knacked - Reverse tracks
  whoooosh - Nitros (press HORN while racing)
  mjcim.rc - Tiny cars
  sausage - Bonus cars
  Note: After entering the codes make sure you save your game. Otherwise, you will have
to run this each time you play. Also, if you use the Nitro code don't try it until you're
in second or higher gear. Otherwise you'll spin out.

  GO to options menu type in nascar racers. you will have no63 nascar.

  Go to options type in Dirt road and then type in hummer. you should have an extra road
named Dirt road come in 1# Place you will have the hummer.

  cup of choice - This unlocks all cup races
  that takes me back - This enables backwards mode
  i have the key - This unlocks all cars and tracks
  i carry a badge - Drive police cars
  lone crusader in a dangerous world - Press horn for nitro
  remote braking - Press horn to freeze opponents