Porsche offered details on its four 2009 911 models, which go on sale in September, which include a new navigation system and a double-clutch transmission. The 911 Carrera Coupe, 911 Carrera Cabriolet, 911 Carrera S Coupe, and 911 Carrera S Cabriolet also get their flat six engines fitted with direct injection, resulting in increased efficiency and performance. The cars don't look substantially different on the outside, although they do get LED tail and parking lights, along with an adaptive headlight system.
The 3.6-liter flat six-cylinder engine in the 911 Carrera gets a 20-horsepower increase to 345, while the 3.8-liter engine in the 911 Carrera S goes up by 30 horsepower to 385. These engines also show a 13 percent gain in fuel economy in the European test cycle, although the EPA test results aren't in yet. More exciting than the addition of direct injection is the seven-speed double-clutch transmission. Porsche claims this transmission has undergone 25 years of development in its racing efforts, making it well-refined for street use. Porsche calls its new transmission the Porsche-Doppelkupplung, or PDK for short. We used in its M3 recently, and found that it not only shifted smoothly, quickly, and precisely, but that it saved fuel, as well. Unlike the BMW's shifter, it appears that you push the PDK shifter up to upshift, and pull down to downshift.
Porsche also announced a much-needed update to its Porsche Communication Manager, or PCM. We've complained about this system in the past, most recently in our review of the