The Group B rally era took rally car performance to new levels, and the Delta S4 is possibly the most extreme interpretation. What looks vaguely like a hot-hatch is a mid-engine all-wheel-drive car with near perfect 50-50 weight distribution. The engine has both a super charger for low-end grunt and a turbo for near 500 high-revving hp. The S4 set the pace in Group B with drivers Markku Alén and Henri Toivonen. Sadly and historically, Toivonen suffered a fatal crash in the S4 at Corsica that prompted the end of Group B. Despite the loss, the mid-eighties will forever be remembered as a high point in rally racing development, in large part to the Delta S4.