Race track, rally or road, Porsche celebrates sports car moments in the way we know best at Goodwood Festival of Speed 2018. #FoS #PorscheFoS #Porsche70Years Fuel consumption Cayenne Turbo: Urban in l/100 km (mpg) 16.4 - 16.2 (17.2 - 17.4); Extra-urban in l/100 km (mpg) 9.5 - 9.3 (29.7 - 30.4); Combined in l/100 km (mpg) 11.9 - 11.7 (23.7 - 24.1); CO2 emissions in g/km 272 - 267.