What was the first 4wd rally car?
Audi launched the quattro in 1980. Destined to become the first commercially successful four-wheel drive road car, it also started a revolution in rallying. The audi quattro a2 was one of a new generation of rally supercars introduced in 1983, built to the new group b regulations. Audi engineers noticed that awd prototypes outperformed their fwd counterparts in the deep snow. Shortly after, quattro became the first permanent all-wheel drive system for passenger cars.If the wheels on one axle of the vehicle lose grip on the road and threaten to spin, power is distributed to the axle of individual wheel with better grip.