In short, the seventh-generation Porsche 911 is longer, lower, has a wider front track and is loaded with state-of-the-art features: a new rear axle design to improve dynamic precision and stability, a new electro-mechanical power steering system, Porsche Torque Vectoring (PTV), enhanced Porsche Active Suspension Management (PASM) and enhanced dynamic engine mount technology. The result raises the bar in driving dynamics with even more sure-footed tracking and roll stability. The Porsche 911 continues to exemplify the automaker's commitment to the Porsche Intelligent Performance philosophy - improved performance using less fuel with increased efficiency and reduced emissions. The new 911 Carrera, Carrera 4 and Targa models are a prime example of this. Powered by a new, highly efficient 3.0 liter twin turbo flat-six engine, they offer significantly more torque than their naturally aspirated predecessors, bringing performance to a higher level than ever before. A new PCM infotainment system offering significantly enhanced capabilities is another feature of these models. The new 911 Carrera and Targa GTS models offer an extended array of standard equipment and a 450 horsepower engine, representing the highest performance tier of the Carrera and Targa range. The 911 Turbo models with up to 580 horsepower top the 911 range, offering the highest level of performance and luxury. The 911 GT3 and GT2 RS represent the most track-focused versions of the 911.