The Mercedes-Benz SL 550 is a luxury grand tourer produced by the German automaker Mercedes-Benz. It is the successor to the previous SL 500 and it debuted in 2013. It is powered by a 4.6-liter bi-turbo V8 engine that produces 429 horsepower and 516 lb-ft of torque. It features a seven-speed automatic transmission and rear-wheel drive. The exterior features a long, low-slung profile, a retractable hardtop, and an aerodynamic design. The interior is luxury-focused, with Mercedes-Benz's advanced technology and safety features.