Porsche revealed its plans for 2011 IAA Frankfurt Motor Show, and among major debuts are the new 911, and the Panamera Diesel.

The diesel-powered Gran Turismo car is powered by a 3.0-litre V6 developing 250 hp and maximum torque of 550 Nm, and is almost as economical as a bloody hybrid.

Mated to an eight-speed Tiptronic S automatic transmission which sends the power to the rear, this engine manages 43.5mpg and 172 g/km CO2. Fit the car with the optional lower rolling resistance tyres, efficiency improves further still, to 167 g/km and 44.8mpg on the Combined cycle. That means you get range of more than 745 miles on one 80-litre tank.

The new Porsche 91 is also the car everyone is waiting to see at the show. The 2012 model features revised design and thoroughly upgraded mechanics, more powerful engines, and for the first time, a seven-speed manual gearbox.

Other important Porsche models on display include the 911 GT3 RS 4.0, Cayman S Black Edition and the Boxster E electric sportsccar.