The first version of the C111 was completed in 1969, and presented at the 1969 IAA in Frankfurt. The car used a
fiberglass body shell and with a
mid-mounted three-rotor direct
fuel injected Wankel engine (code named
M950F). The next C111 appeared in 1970; it was shown at the 1970
Geneva International Motor Show. It used a four-rotor engine producing . The company decided not to adopt the Wankel engine and turned to
diesel experiments for the second and third C111s. The C111-IID's engine was a Mercedes-Benz OM 617, and produced at 4200 min−1. It was based on the Mercedes-Benz 85 kW variant of the OM 617 used in the
Mercedes-Benz W 116 S-Class, but had a different turbocharger without a wastegate, which allowed an increased pressure ratio of 3.3. Daimler-Benz also added an intercooler that significantly improved the engine's thermal efficiency.
Nardò Ring in 1978, and also to average a 16 l/100 km fuel consumption at an average speed of 325 km/h. The engine was fitted with an M-type inline injection pump of Bosch's PE series with a maximum injection pressure of 40 MPa. The C111 IV had a 4.5 L twin KKK-turbocharged
V8 engine that produced at 6000/min. Mercedes-Benz introduced the
C112 at the
Frankfurt Motor Show in 1991 as a proposed production sports car. The car used a mid-mounted 6.0 L
V12 engine. After accepting 700 deposits, the company decided not to proceed with production. == References ==