Mercedes-Benz SLR McLaren Roadster
The Mercedes-Benz SLR McLaren Roadster is powered by a supercharged 5.5-liter, 617-hp (460 kW/626 ps) AMG V8 engine. The SLR McLaren Roadster boasts 0-60 mph acceleration of only 3.8 seconds and a top speed of 206 mph. Showcasing Formula 1 technology for the street, the SLR McLaren Roadster’s carbon fiber monocoque provides high torsional rigidity for outstanding handling as well as unparalleled protection in collisions.
Thanks to its fully retractable top, the SLR Roadster offers open-air driving pleasure that’s practical for everyday use. Available in three different color combinations, the retractable top of the new SLR Roadster blends into its aerodynamic silhouette, and newly developed roof material makes the cabin relatively quiet with the top up. Even with the top down, conversation is still possible at well over 120 mph, thanks to its superior aeroacoustics.
The semi-automatic roof opens by simply unlatching it from the windshield frame and raising the top slightly, after which an electric motor folds it away in less than ten seconds.
In the wind tunnel, the SLR Roadster has been optimized for remarkable levels of aerodynamic efficiency, handling, and aeroacoustics at high speeds. The new SLR Roadster even inherits two aerodynamic features from the SLR coupe – an active airbrake integrated in the trunk lid and a diffuser in the rear bumper that provides increased downforce to the rear of the car.
The SLR McLaren Roadster showcases the collective experience of Mercedes-Benz and its Formula 1 partner McLaren in the development and production of high-performance sports cars. This unique combination of expertise is evident not only in the pioneering developments and impressive performance of the SLR, but also in its high levels of safety and practicality.
While celebrating the formidable SLR race cars of the 1950s, the launch of Mercedes-Benz SLR McLaren coupe marked a new era for high-technology, high-performance cars. Like the SLR coupe, the new Mercedes-Benz SLR McLaren Roadster unites the legend of the highly successful SLR race cars from the 1950s with the innovative technology of modern Formula 1 vehicles from the Vodafone McLaren Mercedes racing team. With a unique front mid-engine design that provides optimum weight distribution, the open two-seater features a carbon-fiber racing-type monocoque chassis and high-performance ceramic composite brake discs for remarkable braking.
Distinctive stylistic elements such as the arrow-shaped nose of the Formula 1 Silver Arrow establish a visual link with the F1 race cars. The SLR legend of the 1950s lives on stylistically in the distinctive lateral louvers, side pipes behind the front wheels and wide-opening gull-wing doors.
One dramatic example of technology transfer from Formula 1 racing is the carbon fiber composite material of the SLR body, which provides rigidity and strength never before achieved in a street car. Apart from two aluminium engine frames, its body is made entirely of carbon-fiber reinforced plastic (CFRP) materials – still an unusual feature among high-performance sports cars. The result is low weight, extremely high occupant safety as well as a degree of torsional rigidity not possible in traditional open-top vehicles.
The SLR is the first production vehicle to utilize a front crash module made exclusively of carbon fiber. Specially designed to absorb crash energy at a constant rate, the carbon fiber crash structure absorbs four to five times more energy in a severe frontal collision than similar structures made of conventional steel.
With 617 horsepower (460 kW/626 ps) and 575 lb.-ft of torque, the supercharged 5.5-liter, AMG V8 engine is coupled to an AMG SPEEDSHIFT R five-speed automatic transmission with three automatic and three manual shift modes. This advanced technology propels the SLR Roadster from zero to 60 mph in 3.8 seconds.
Each supercharged, intercooled V8 engine is hand-built at manufacturing facility of AMG, the high-performance division of Mercedes-Benz, in Affalterbach, Germany. The engine is mounted behind the front wheels in a front mid-engine position. Its dry-sump lubrication eliminates the need for an oil pan, allowing the engine to be mounted as low as possible in the frame for better aerodynamics and a lower center of gravity, which benefits handling. Dry-sump lubrication also prevents oil starvation that can occur during hard cornering.
The high-performance SLR super sports car is one of very few production cars to make use of ceramic brake technology. The brake discs on the SLR are made of a special composite material – a fiber-reinforced ceramic with astounding stopping power, high heat resistance, outstanding structural strength and long service life. The discs weigh less than half that of conventional brakes, and are fitted with eight-piston calipers in front and four-piston calipers in the rear. The brake system alone can decelerate the SLR up to 1.3 g, producing the theoretical equivalent of 2,000 horsepower.
In addition, an innovative airbrake in the form of an adaptive rear spoiler in the trunk lid increases downforce, improving stability and braking even further. Under hard braking above 59 mph, the air brake pops up at a 65-degree angle, helping to stop the car from 62 mph is just 114 feet.
In addition to its unique carbon-fiber crash elements, the SLR has steel-reinforced A-pillars and two fixed roll-over bars as well as adaptive front airbags, knee and side airbags, seat belt tensioners and a tire-pressure monitoring system.
Standard equipment includes dual-zone automatic air-conditioning; a high-quality BOSE premium 7-speaker sound system and a multifunction sport steering wheel with manual shift paddles. Its carbon-fiber bucket seats are available in 14 different leather colors and can be tailored to each driver and front passenger by using custom-fitted seat cushions.
The Mercedes-Benz SLR Roadster and coupe are produced at McLaren's Formula 1 race team factory in Woking, England, using stringent Mercedes-Benz quality criteria.
Not only does the SLR boast a rich heritage, but it is also the flagship of a multi-dimensional Mercedes-Benz brand. With by far the broadest product portfolio of any luxury automaker, Mercedes-Benz offers an array of models ranging from mid-size coupes and large sedans to luxury roadsters and the SLR super sports car.
Source: Mercedes-Benz press