what fuel does the cayenne use
2011-2012 Cayenne â Manual. 2011-2012 Cayenne â Manual. Your Porsche is equipped with catalytic converters and must use UNLEADED FUEL ONLY. Your engine is designed to provide optimum performance and fuel economy using unleaded premium fuel with an octane rating of 98 RON (93 CLC or AKI). Porsche therefore recommends the use of these fuels in your vehicle.