At the upcoming 2012 Detroit Motor Show, Porsche will reveal the all-new 911 Cabriolet to the North American public for the very first time before it goes on sale this spring along with the also new 430-horsepower Panamera GTS, which we first saw at the L.A. Auto Show in November.

But these aren’t the only new models being prepared for the American market as Porsche also has plans to launch its first ever compression-ignition car in the USA, the Cayenne Diesel along with the soon-to-be revealed Cajun compact crossover, which the German automaker said will arrive in showrooms in 2013.

The Cayenne Diesel was recently updated with a modified version of the VW Group’s 3.0-liter V6 featuring a new turbocharger, increased direct injection pressure and a lighter crankshaft.

The diesel unit is rated at 245-horses offering the Cayenne a 0 to 100 km/h (62 mph) sprint time of 7.6 seconds and a top speed of 220 km/h (137 mph), while returning a combined fuel consumption of 7.2 liters/100 km (equal to 32.7 mpg US) in the European cycle. Porsche has not yet announced performance or fuel economy figures for the American market model.

As for the new Cajun, Porsche continues testing the Cayenne’s smaller crossover sibling in Europe. The Cajun will share its platform architecture with the Audi Q5 and will likely offer both four-cylinder and V6 engine options.

Other models being prepared by Porsche include the replacements for the Boxster roadster and Cayman coupe.

In other related news, Porsche made an announcement on its new U.S. headquarters located in Atlanta. The complex, which is adjacent to the new terminal of Atlanta’s international airport, will for the first time centralize all administrative, training and sales functions and financial services, and is scheduled for completion in 2013.

“By building a new headquarters in Atlanta in the US State of Georgia we are underlining our growth ambitions in the region,” said aid Bernhard Maier, Porsche AG Board of Management Member for Sales and Marketing.

In addition, Porsche said that it plans to invest more than US$100 million to build a new customer test facility in Carson in California, between the airports of Los Angeles and Long Beach.

PHOTO GALLERY

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