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[2] [20] The first use of a PDK in competition was the 1985 Porsche 962 C Le Mans racing car, which won the World Sportscar Championship in 1986. [2] [21] The PDK transmission was also used in the 1985 Audi Sport Quattro S1 Group B rally car. [7] [22] The first mass-production passenger car to use a DCT was the 2003 Volkswagen Golf R32. [2] [6] [9]
The Porsche 969 was a concept intended to succeed the Porsche 959 and was based on the then upcoming 964 platform. The car was conceived in 1982 as a twin-turbo 911 with four-wheel drive and a PDK gearbox. [17] The project received the in-house code 965 and was developed along with the new, 964 generation of the 911.
Porsche's focus was on reducing internal friction to improve throttle response. Compared to the 991.1, the rear spoiler is higher and located further back to be more effective. There is a new front spoiler and changes to the rear suspension. The 991.2 GT3 brought back the choice between a manual transmission or PDK dual-clutch transmission.
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All models include standard 6-speed manual transmission except for the Turbo S models and Speedster. The 7-speed PDK transmission was available in all but GT3, GT3 RS, GT3 Cup, GT3 RS 4.0, GT2, GT2 RS, and Sport Classic models. The PDK transmission features a Sport Plus setting that includes launch control and faster shifts.
The transaxle configuration combines the gearbox and final drive in one housing and is only built in individual cases; In the transverse direction, the gearbox and final drive are very often combined in one housing due to the much more restricted space available; Every type of transmission occurs in every type of installation.
A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.
The engine is a 2.0-liter four-cylinder turbo, closely related to the engine found in the Golf GTI ‘Performance Pack’ and sending 233bhp and 258lb ft of torque to the wheels through Porsche's seven-speed ‘PDK’ gearbox.