Car, The Porsche 911 GT2 is a sports car built by the German manufacturer Porsche since 1994. It is based on the 911 Turbo, and retains the turbo, but features numerous upgrades, including a more powerful engine, larger brakes, and stiffer suspension calibration. The GT2 is significantly lighter than the Turbo due to the use of rear-wheel drive instead of all-wheel drive, and the lightening or removal of interior components.