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At the Frankfurt International Motor Show (IAA) in September 1969, Mercedes-Benz presented an out-of-the-ordinary car: the C 111.
This “test lab on wheels” wore a wedge-shaped body and upward-opening gullwing doors. The color was an orange metallic, originally designated “rosé wine”. The body consisted of fibreglass-reinforced plastic and was riveted and bonded to the steel frame-floor unit.
The C 111 served to test the Wankel engine. A three-rotor unit developing 206 kW (280 hp) provided the propulsion power and permitted a top speed of 260 km/h (162 mph). Just a few months later a thoroughly revised version of the C 111 was shown at the Geneva Motor Show. It featured a four-rotor Wankel engine with an output of 257 kW (350 hp). The car accelerated from standstill to 100 km/h (62 mph) in 4.8 seconds and attained a top speed of 300 km/h (186 mph).
Little more was heard about the Wankel engine; diesel technology now b...
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