Initial D Codes -

Bonus tracks:
Successfully complete practice mode under the beginner, intermediate, and expert difficulty settings to unlock new tracks.

Bonus cars:
Defeat each driver in story mode to unlock a new car. Three more cars will be unlocked when story mode is successfully completed. Five more cars will be unlocked when story mode is completed a second time. One more car will be awarded when story mode is completed a third time. The final bonus car is awarded when finishing first in D-Check mode.