Formula One '04 Cheats

Jordan 191 car:
By winning a season in arcade mode.

Lotus 72E car:
By winning a season in simulation mode.

Williams FW14B car:
By winning a race in arcade mode.

Alternate introduction sequence:
Get an entry in the top ten lap times in time attack mode.

Control car preview:
When previewing a car, use the Analog-sticks to turn the wheels. 

Unlock All Classic Cars:
Enter RETROF1 as a name.
User Cheat by lewis

Formula One 04 Official Website

Formula One 04 Review - RewiredMind

Formula One 04 Review - Totalgames.net