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After what seems to be about the last three decades of seeing spy photos of Porsche's first four-door super sedan, the Panamera, the car is now officially official. Porsche is calling this a four-door grand touring sports car rather than a coupe or sedan. According to the Stuttgart-based brand, the Panamera combines traditional Porsche dynamic behavior with a spacious interior and GT comfort. Unfortunately, they seem to have left an attractive shape out of the equation. Any hopes we had that the Panamera would look better when the camouflage was removed have been quickly dashed.

Power for the Panamera will come from a range of V6 and V8 engines that will likely mirror the Cayenne lineup. The engines will run from a paltry 300 horsepower up to the 500-hp unit from the Cayenne Turbo. Both naturally aspirated and turbo models will be included, with most using direct fuel injection. Getting the power to the wheels will be a choice of six-speed three-pedal gearbox or a seven-speed dual clutch unit. All-wheel drive will be an option on top of the standard rear-wheel drive, as well. At some point, probably sometime later in 2010-11, a hybrid variant will also debut. There's no word on whether Porsche will add the 3.0L diesel V6 now appearing in the Cayenne to the Panamera, but production starts next spring for a summer on-sale date.

[Source: Porsche]