While it might sound counterintuitive to the aerodynamically inclined, but the economy position helps with flow separation at the rear of the body and, more importantly, it moves an area of high pressure away from the rear window. At speeds of 125 mph and above, the wing’s angle of attack is increased to provide optimum downforce on the rear axle.
The spoiler in its most aggressive state provides a lift coefficient of -0.01, which equates to an additional 440 pounds pushing down on the rear of the car at 186 mph.
Porsche also has a remarkable chassis system for the 2017 Panamera, which it calls as the 4D Chassis Control.
The 4D Chassis Control system looks at inputs from the driver and the attitude of the car and then modifies the chassis system to give the 2017 Porsche Panamera the best setup to negotiate a turn at the highest possible speed.
With a varied list of performance-oriented chassis systems, 4D Chassis Control links them all together. Such performance systems actually include the Porsche Torque Vectoring Plus, the Porsche Active Suspension Management, and the Porsche Dynamic Chassis Control Sport.
It is not just a simple program that talks to all its sub-systems. The original model of the Panamera had around two million lines of code that dealt with electronic systems. The big difference is that the 2017 model has more than 100 million lines of code.