www.autobytel.com The 2013 Mercedes-Benz SL550 has been completely redesigned and marks the 6th generation of the SL-Class. The SL550 is a roadster which is in essence a two seat convertible. The roof is 13 lbs. lighter than the previous model thanks to the use of lightweight magnesium materials. The 2013 Mercedes SL550 has an MSRP price of $103650. The SL550 is powered by a twin turbo 4.6 liter V-8 engine that produces 429 horsepower and 516 lb-ft. of torque. The 7-speed automatic transmission features wheel mounted paddle shifters as well as 3 distinct driving modes: ECO, Sport, and Manual. Combined with the start-stop system the 2013 Mercedes SL550 has a fuel economy rating of 16 MPG in the city and 24 MPG on the highway which is better than the previous model. The new 2013 Mercedes SL-Class features an all aluminum body that reduces the weight by over 300 lbs. compared to the outbound model. This weight reduction alone provides a huge boost in performance. In fact with the twin-turbo V-8 engine the SL550 can rocket from 0-60 MPH in 4.5 seconds. That figure is pure super car territory. The exterior still holds the shape that made the SL-Class famous over 60 years ago but with modern lines. The Xenon headlights feature LED running lights which are a must for any self-respecting luxury car. The 19-inch alloy AMG wheels give the 2013 Mercedes SL550 a very aggressive look. The suspension features a ton of great technology that offers the most luxurious yet sporty ride. The...