Lancia Delta S4

The Lancia Delta S4 is a Group B rally car that competed in the World Rally Championship in 1985 and 1986, until the were banned from competition by the FIA.
The car’s 1759 cc four cylinder engine combined supercharging and turbocharging to reduce turbo lag at low RPM.
Officially the car produced 550 horsepower (410 kW). Unofficial figures claimed the S4 could accelerate from 0 to 100 km/h on gravel in just 2.5 seconds