Mercedes C111 II Quad-Rotor
First unveiled at the 1970 Geneva Motor Show, the Mercedes C111-II quad-rotor boasts a mid-mounted rotary engine producing 345 horsepower, enabling it to hit 60 mph in under 5 seconds, while topping out at 186 mph. Believe it or not, this concept was also the first car to ever be designed entirely on a computer. This meant that engineers could predict dynamic loads and also speed up the design process by four months. Read more for a test drive video, additional pictures and information.



Unfortunately, by December 1970, Mercedes deemed that rotary engines has poor emissions, abysmal fuel economy, as well as bad reliability, so they replaced the four-rotor Wankel engine with a 3.5-liter V-8. When all was said and done, a total of sixteen C111s were built, with a single C111/IV equipped with a twin-turbo 4.8-liter V8 that hit a top speed of 251 mph in 1979.

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Mercedes C111 II Quad-Rotor
Mercedes C111 II Quad-Rotor
Mercedes C111 II Quad-Rotor