Porsche is expanding the 911 model line with five new GTS models: the 911 Carrera GTS with rear-wheel drive, the 911 Carrera 4 GTS with all-wheel drive — both  available as a Coupé and Cabriolet — and the 911 Targa 4 GTS with all-wheel drive. The 3.0-liter flat-six cylinder with larger turbochargers delivers 450 horsepower, which is 30 horsepower more than the current 911 Carrera S and 20 horsepower above the previous, naturally-aspirated GTS model. All GTS variants are equipped as standard with a seven-speed manual transmission. The seven-speed Porsche Doppelkupplung (PDK) dual-clutch transmission is available as an option.