Complete the Wales Rally GB under the extreme difficulty setting in first place to unlock all cars, including the Extreme and Concept cars.
All Cars And Tracks
Highlight 'Quick Race' at the menu, then press Start(13), X.
A sound will confirm correct code entry.
You will start on quick race, but can quit.
Evolution Cars
After each 100km you travel, you will unlock an 'evolution' of the car. There are five 'evolution' cars in all.
Extreme Cars
In order to unlock the extreme cars, you must travel 750km in their respective WRC counterpart.
Unlocking 2003 Wrc Season's Second Half
To unlock the second half of the 2003 WRC season (Germany, Australia, Wales (GB), Corsica (France), San Remo (Italy), Catalunya (Spain) and Finland) for time trials and single rallies, you must finish first, second, or third in the Overall Driver's Standings (at the end of the season). The default rallies available are Monaco, Sweden, New Zealand, Acropolis (Greece), Cyprus, Turkey (new event last year), and Argentina.