The iconic Mercedes-Benz SL entered its sixth generation with the introduction of the sleek SL550 coupe, a marvel of automotive engineering that debuted as a 2013 model. This iteration not only marked the 60th anniversary of the SL lineage but also showcased a significant leap in vehicle technology and design. The SL550 boasted an all-new aluminum unit body and a redesigned retractable hardtop, enhancing both performance and aesthetics.
Celebrating six decades of the Mercedes-Benz SL, the 2012 unveiling of the sixth-generation coupe/roadster was a tribute to a name synonymous with automotive excellence. The “SL” designation, initially a simple abbreviation for “super” and “light,” evolved into Mercedes-Benz’s most recognized model over these sixty illustrious years.
The journey of the SL began with a race car in 1952, a stark departure from the sports/racing cars of its time. The 300SL, with its groundbreaking tubular space frame, aerodynamic aluminum body, distinctive gullwing doors, and direct-fuel-injection engine, revolutionized motorsports. Victories at prestigious races like Le Mans and the Carrera Panamericana in its debut season cemented the 300SL race car as a legend.
To the delight of enthusiasts, Mercedes-Benz introduced the road-going SL in 1954. The production 300SL Gullwing made its grand entrance in New York, not Europe, laying the foundation for a lasting legacy of thrilling SL sports cars. Building upon the 300SL Gullwing coupe, the convertible 300SL roadster was launched in 1957. These classics are often seen as predecessors to modern marvels like the SLS AMG gullwing and roadster. Mirroring today’s SLK, the 190SL, a more accessible convertible introduced in 1955, was marketed alongside the 300SL, expanding the SL family.
The Mercedes-Benz SL550 coupe is propelled by a state-of-the-art V8 engine that achieves enhanced fuel efficiency while simultaneously delivering increased power – a remarkable achievement where typically one is sacrificed for the other. This engine incorporates direct fuel injection, twin turbochargers, and multi-spark ignition systems.
Evolving from its acclaimed 5.5-liter predecessor, the new 4.6-liter V8 engine in the SL550 features a 20 percent reduction in displacement yet surpasses its forerunner in both horsepower and torque, producing an impressive 429 horsepower and 516 lb.-ft. of torque. The reduced displacement is effectively compensated by the potent twin turbochargers and an advanced air-water intercooler system.
An innovative ECO stop-start system is integrated into the SL550 engine to further boost fuel economy. This system automatically shuts off the engine when the vehicle is stationary and the brake pedal is engaged. Upon releasing the brake pedal, the engine computer intelligently selects the optimal piston position for ignition, and the direct fuel injection and multi-spark systems, working in concert with a robust starter motor, ensure a near-instantaneous engine restart.
The interior of the SL550 is equipped with a standard harman/kardon Logic 7 digital surround-sound system featuring the award-winning FrontBass® technology. In this system, the bass speakers are ingeniously integrated into the front firewall, utilizing the front frame members as substantial bass boxes.
This natural amplification design results in a sound system that is not only among the best in its class but also contributes to weight reduction by eliminating the need for separate bass boxes. The harman/kardon audio system is equipped with Dolby Surround 5.1 and employs two amplifiers with a combined output of 600 watts to drive 10 strategically placed speakers. Each amplifier channel features individually tuned frequency response, and the system includes speed-sensitive volume control for optimal listening experience at any speed.
The new SL’s wiper system, MAGIC VISION CONTROL, features laser-cut channels along the entire length of each wiper blade. These channels distribute washer fluid directly in front of the moving blades, ensuring precise and efficient cleaning. An electronic control unit adjusts the washer fluid flow each time the wipers change direction. This targeted fluid application enhances cleaning effectiveness without disrupting driver visibility during operation. The control unit also dynamically adjusts the fluid volume based on vehicle speed and outside temperature. Furthermore, when the top is down, the fluid volume is automatically reduced to prevent occupants from being sprayed during windshield cleaning.
The standard Panorama sunroof in the SL550 consists of a transparent polycarbonate roof panel with a manually operated roller blind. The optional MAGIC SKY CONTROL elevates this feature with a glass roof panel whose tint can be electronically controlled. With the touch of a button, the roof panel can transition from transparent to heavily tinted, employing technology akin to automatic dimming mirrors, providing customizable cabin ambiance and temperature control.
Mercedes-Benz has long been a pioneer in vehicle safety, notably as the first manufacturer to offer emergency calling as a standard feature. The SL550 debuts mbrace2™, the next generation of telematics innovation, offering drivers cutting-edge features encompassing safety, infotainment, personal assistance, and vehicle care. mbrace2™ includes over-the-air software updates, ensuring users always have access to the latest technology. The mbrace2™ Mobile Application, compatible with both iPhone and Android smartphones, further expands connectivity and convenience. This comprehensive service is powered by Verizon Telematics.
Beyond mbrace2™, the SL550 is equipped with pop-up roll bars and a suite of advanced electronic safety systems, solidifying its reputation as “the world’s safest convertible.” Its crash avoidance systems include standard ATTENTION ASSIST and ESP stability control, along with optional DISTRONIC PLUS, PRE-SAFE Brake, Active Blind Spot Assist, and Active Lane Keeping Assist. In the event of a collision, occupants are protected by the high-strength aluminum body, intelligent front airbags, knee bags, side airbags, head-thorax bags, seat belt tensioners, and belt force limiters, ensuring comprehensive safety.
The Mercedes-Benz SL550 coupe represents a harmonious blend of heritage and innovation, celebrating 60 years of the SL legacy while pushing the boundaries of automotive technology, performance, and safety.
