A hydraulic pump and 11 computer-controlled hydraulic cylinders power the system, and top operation is controlled by a distinctive switch on the center console. When the top is stowed, pressing a red button located inside the trunk raises the folded roof about 20 degrees, making cargo access easier.
LEANER, CLEANER, STRONGER AND SLEEKER
A five-liter V8 engine — one of the most potent in its class — produces 302 horsepower, accelerating the new SL500 from 0 to 60 mph in approximately 6 seconds. Advanced twin-spark-plug, three-valve-per-cylinder technology also means the new SL500 is a ULEV, or Ultra Low Emission Vehicle.
Sparkling performance is due in part to the SL sports car's sophisticated, lightweight body. The hood, doors, trunk lid and roof are all aluminum, and the front hood alone is 33 pounds lighter than a comparable steel hood.
At the same time, over 30 percent of the body structure is made of high-strength steel, so that the new SL body is 20 percent stiffer than the previous model, even with the top down.
The aerodynamic shape of the SL body contributes its impressive performance and fuel efficiency as well as to a quiet cockpit. The drag coefficient is 0.29 — greater than nine percent lower than the previous model.