The Mercedes-Benz SL550 is a luxury convertible sports car made by the German automaker Mercedes-Benz since 2013. It is a two-door, four-seater vehicle with an aluminum body, a 3.0L V6 biturbo engine, and a seven-speed automatic transmission. The SL550 has a retractable hardtop and can reach speeds of up to 155 mph. It also has a host of standard amenities, including a COMAND infotainment system, power front seats, a panoramic sunroof, and much more.