The deactivated pump no longer draws any engine power, and the coolant just circulates slowly. On the one hand, this reduces friction, and on the other, the engine reaches its operating temperature more quickly. The same applies to the air conditioning compressor. While previously its throughput could be controlled, now it can also be completely deactivated via a clutch.

New gear ratios for manual transmission that has two-disc clutch for first time

The 911 Carrera traditionally stands for unadulterated sporty driving pleasure, but with a high level of shifting comfort. Therefore, Porsche developed a two-disc clutch for the new generation of engines. It enables comfortable actuation forces despite the high torques of the new turbocharged engines that are being transmitted. This lets the driver experience the dynamism of the sports car, such as on mountain roads with lots of bends or on circuit race tracks without the shifting pleasure being spoiled by strenuous clutch work. The gear ratios were adapted to the modified engine characteristic. The longer gear ratios starting with third gear make it possible to achieve low fuel consumption figures without affecting the car's sportiness. In addition, the mechanical design of the manual transmission was adapted to the higher torques of the engines.

PDK has new operating logic and dual-mass flywheel

The top priority in further development of the PDK was on greater efficiency while maintaining a high level of sporty and comfort properties. For the driver this is most apparent in the new shifting direction of the selector lever. As in the 911 GT3 and many Porsche race vehicles, pulling the lever back now means upshifting, while pressing it forward downshifts. For the first time, Porsche is using a dual-mass flywheel with a centrifugal pendulum in conjunction with the PDK, as well as intelligent overrun cut-off and virtual gears. The centrifugal pendulum, which incidentally is also used with the manual transmission, is an adaptive vibration absorber that dampens vibrations in the drivetrain over a broad range of engine speeds. The effect: when driving slowly, the driver can drive in a higher gear with low revs without any jolts. This enhances drive comfort and also saves on fuel.