White not brilliant, the PDK double clutch gearbox delivers a predictable act, with smooth up and downshifts, and, as on the Carrera, a 7th gear as long as a United Nations speech. Improving mileage is a worthy goal, but looses its purpose if it forces such frequent downshifts whenever you need to summon power to overtake or regain freeway speed. Porsche claims that the Turbo revs at 2800 rpm at 200 km/h ! In spite of this fuel saving gear box, an average 15 L/100km in real world conditions with a Panamera S or 4S would not surprise me. Not a small figure but thankfully, Porsche installed a 100L tank so your bladder will be the first to surrender on long pan-european dashes.