30/06/2025
“Not even the post-fuel-crisis end of the Wankel craze can diminish the C111’s continuing relevance though. As a high-performance test bed, it remains without equal, whether powered by a Wankel engine, a regular V8, or used for developing the first ABS systems. At the behest of German motoring journalism Grandseigneur, Fritz B Busch, it even enters a third career, as a Rekordwagen.
Fitted with Mercedes’ five-cylinder diesel engine, on 12 June 1976 the C111-II D sets three world and 16 class records, as it drives 10,000 miles over the course of 60 hours on the Nardò track at an average speed of more than 155mph. Then on 29 April 1978, the C111-III, an aerodynamically focused design, sets nine speed records, reaching an average speed of 200mph over 310 miles. A year later, on 5 May 1979, the C111-IV sets the model’s final speed record (of 251mph) on the Nardò circuit. This rigorously aerodynamic version is powered by a 493bhp, 4.8-litre V8 engine with twin turbochargers.
Rekordwagen, engineering test bed, supercar, design statement: over the course of a decade, the Mercedes C111 – all 15 iterations – takes on many roles with aplomb.”
The C111-III encased in aerodynamic bodywork, 1977, and on a record run at the Nardò Ring, 1978.
Photography: Mercedes-Benz AG
Snippet taken from a story by Christopher Butt () in The Road Rat Edition 16 on Mercedes’ record-breaking prototype that ruled the Nardò test track, the C111.
Get your copy today via our archive.
https://theroadrat.com/collections/buy-magazines