from worldcarfans: "German TV motor show host Klaus Niedzwiedz took the a 911 Carrera fitted with the new PDK transmission for a little joy ride covering 648 kilometers that resulted in an average fuel consumption of only 6.7 l/100km (or 42 mpg imp. - 35 mpg U.S.). Not bad for a 3.6 liter, 345 hp vehicle."
From what I could gather elsewhere the driving included autobahn, smaller routes etc with speeds between 90-130kmh with average speed of 84kmh. This was officially monitored by a DEKRA certified personnel. I am really impressed