that the upcoming
hybrid will use almost a third less fuel than the standard version. The
is coming in late 2009 and will supposedly get 26.8 mpg (8.9 liters per 100 kilometers). The standard
gets 18.5 mpg (12.9 liters/100 km). The current Cayenne also belches between 320 and 378 grams of CO2 per kilometer driven, and new rules will go into effect sometime around 2012 that will make the European fleet average 130 grams. No word on the CO2 output of the part-electric Cayenne.