Porsche is set to unveil the latest evolution of its iconic 911 at the upcoming Frankfurt Motor Show.

The famous silhouette remains, though now emphasised by a lower roof line and wider front track.  A 100mm longer wheelbase, combined with a weight reduction of almost 45kg, improves stability and offers greater interior space, Porsche claim.

The 911 Carrera is powered by a new 3.4-litre engine developing 350 hp, and the Carrera S features a 400 hp version of the familiar 3.8-litre. The 3.4-litre Carrera with PDK accelerates from 0-62mph in 4.6 sec. Pressing the Sport Plus button on the optional Sport Chrono Pack cuts that to 4.4 sec. The 3.8-litre Carrera S with PDK can accelerate from 0- 62 mph in 4.3 sec (Sport Plus 4.1 sec), 0.2sec quicker than its predecessor. Porsche Dynamic Chassis Control (PDCC) active roll stabilisation system is also available for the first time on the 911 Carrera S. The system reduces body roll when cornering, meaning maximum cornering speeds are increased, and lap times on racing circuits are improved.
Inside, the new 911 takes its cue from that of the Porsche Carrera GT. The driver is now even more closely integrated with the cockpit thanks to the centre console rising up to the front with the high-mounted shift lever located close to the steering wheel.

The new 911 models will be in UK Porsche Centres from December 17 2011. The 911 Carrera is priced from £71,449 and the 911 Carrera S is priced from £81,242.