it's a part of the FIA rules, 2.0 or 2.5 liter motors in a four door compact car with at least 25,000 units produced four sale(i think) are the basic rules for WRC cars
The SFX for the arcade videogame are actually from Colin McRae Rally 2.0, a game without the 206 WRC car - Also, the advertisement was 100% filmed in Argentina (landscape plus thanks to Salta, Argentina in the credits) SOURCE? I've played that shit way too much