German magazine Autobild has reported new details on the upcoming 2012 Porsche 911 in its print edition.

According to the report, there are more changes coming to the 911 than initially expected.

First off are the new dimensions of the next 911. From the spy shots we could spot that the model has been stretched but Autobild now has the exact numbers.

The next-generation 911 will be 56 mm longer than the current one and measure 4.49 meters in length. The wheelbase has also been extended by 10 mm and the car will stand 11 mm shorter.

The standard 911's width remains the same but the Carrera variant will feature a 60 mm wider rear end.

A completely new rear axle has been developed for the next 911 too and its engines have been revised for improved performance and fuel-economy.

The entry-level 3.6 liter Boxer engine gets shrunk down to 3.4 liters and produces 350 PS (257 kW / 345 bhp) for a 0 to 100 km/h sprint time of 4.8 seconds and a top speed of 289 km/h (180 mph). Fuel-economy is down 13 percent to 8.5 liters/100 km (27.7 mpg-US).

For the Carrera S, a revised 3.8 liter unit will come with 400 PS (294 kW / 395 bhp) and feature a 0 to 100 km/h sprint time of 4.5 seconds and a top speed of 302 km/h (188 mph). Fuel-economy is reduced by 14 percent to 9.1 liters/100 km (25.8 mpg-US).

The next 911 will weigh about 20 kg less than the current one in base-model configuration and will come with 19-inch wheels. The Carrera S model gets 20-inch wheels as standard.

The 2012 Porsche 911 will debut at the Frankfurt motor show in September 2011.



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