In the 1975 model year, a particularly powerful version of the Porsche 911, the 911 Turbo, came on the market thanks to turbo charging. Since its market introduction in model year 1975, the 911 Turbo (initially referred to internally as the 930) has been the top model in the 911 model range.
The 930 had widened rear wheel arches, making it 12 cm wide. Black protective film was applied to the front of the rear wheel arches. The bonnet had a distinctive rear wing with a hard rubber edge.
Up to and including model year 1977 the bonnet was made of fiberglass-reinforced plastic. From the 1978 model year, the bonnet was made of sheet steel and the permanently mounted plastic rear wing was much larger to be able to integrate the charge air cooler. The Turbo also received an exhaust system with a double end pipe. If the boost pressure control valve of the exhaust gas turbo was open, the exhaust gas only came from the left end pipe.
From model year 1987, the Turbo was also available in the Targa and Cabriolet body versions.
For the 1989 model year, the 4-speed manual transmission was replaced by a 5-speed version