The Lancia Delta S4 is a remarkable rally car that competed in the World Rally Championship in 1985 and 1986. It was developed as part of Group B, a category known for its powerful and innovative vehicles. The Delta S4 represents an evolution of the Lancia 037 Monte Carlo and takes advantage of the Group B regulations to achieve exceptional performance. With a mid-mounted engine and all-wheel drive, it offers superior traction and handling, making it one of the standout vehicles of its time. The 1759 cc four-cylinder engine combines both supercharging and turbocharging, resulting in an impressive output of 550 horsepower. These technical features allow the S4 to accelerate from 0 to 100 km/h in just 2.3 seconds, making it one of the fastest rally cars of its era. The FIA regulations allowed the S4 to compete in the under 2500 cc class, giving it a weight advantage of 890 kg.