All Porsche models – including the 911 – are designed to operate on fuels with an ethanol content of up to 10%, e.g. ‘E10’. Ethanol has a positive impact on the CO2 balance since the plants grown for the production of this biofuel also absorb CO2 from the atmosphere.
The release of hydrocarbons from the fuel system has been minimised thanks, in no small part, to the active carbon filter and the multilayered material from which the fuel tank is made. All fuel lines are made from multilayered plastic, steel or aluminum.