15. 1985 Audi Sport Quattro S1
The 1985 Audi Sport Quattro S1 is best known as a rally car, thanks to its high performance specifications. According to official model information, this Audi Sport Quattro S1 was fitted with the five-cylinder block engine, that produces roughly 500 bhp, at 8,000 rpm. Thanks to this power plant, the Sport Quattro is known to move from 0 to 100 km/h in just 3.1 seconds. But for other car enthusiasts and car owners, the Audi Sport Quattro S1 stood out because of its rally and racing-ready looks.