This is another 911 that wrote history: the first turbocharged Porsche 911, and the first turbo-powered race car at Le Mans. Porsche campaigns the RSR Turbo in the 1974 World Championship for Manufacturers against thoroughbred prototypes in order to prepare for the World Championship with production based -acers touted for 1975. In 1972/73, Porsche had pioneered turbocharged race engines with the 917, and now successfully applies the acquired knowledge. For a low vehicle weight, the roll cage is made of aluminium, the doors and all add-on body parts are plastic. For consistent handling, the 120-litre fuel tank is positioned in the rear of the cockpit. Gijs van Lennep and Herbert Müller score third at the Monza 1,000 kilometres with this chassis. At Le Mans, Helmuth Koinigg and Manfred Schurti retire with a damaged connecting rod, while their team colleagues Van Lennep and Müller bring the sister car home in a sensational second place.
| Model Year: | 1974 |
| Engine: | 6-cyl. flat |
| Displacement: | 2,142 cc |
| Power Output: | 367 kW (500 hp) |
| Weight: | 750 kg |
| Acceleration 0-100 km/h: | 3.2 s |
| Top speed: | 300 km/h |
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