"In the future, we will have hybrid drive in every model line," Porsche's development chief Wolfgang Duerheimer said. The move is expected to lower Porsche's average CO2 emissions to 216g/km by the year 2015, with the figure currently standing at 255g/km. The Cayenne is currently the only model with a hybrid variant, but a Panamera hybrid will be launched shortly, and the 918 Spyder is expected to become Porsche's flagship hybrid model.

Aside from introducing hybrid models, Porsche also aims to reduce emissions and improve fuel economy of its cars by cutting around 10% of their cars' weight with each generation, through the use of lightweight materials such as carbon fibre, and also possibly utilising four-cylinder engines.

"If the CO2 guidelines require it, then our engines will become smaller and may have just four cylinders," Duerheimer said. "The important thing is that the performance has to be right. The 911 must always be on the cutting edge." He added, "We want to learn how we can electrify all our sports cars in the future with the help of [the 918's] short production run."