Mercedes-Benz SLR McLaren (R199) Roadster 722 S 5.5 V8 Kompressor (650 Hp) AMG SPEEDSHIFT R

Introduction to the Mercedes-Benz SLR McLaren (R199) Roadster 722 S

The Mercedes-Benz SLR McLaren (R199) Roadster 722 S represents the zenith of a celebrated collaboration between two automotive titans: Mercedes-Benz and McLaren Automotive. Launched in 2008, this ultra-exclusive grand tourer was a limited-production variant of the already formidable SLR McLaren Roadster, designed to offer an even more focused and exhilarating driving experience. The “722 S” designation is a direct homage to the starting number (722) of the Mercedes-Benz 300 SLR, famously piloted by Stirling Moss and Denis Jenkinson to victory in the 1955 Mille Miglia road race. This specific model, produced for a mere two years from 2008 to 2009, stands as a testament to engineering prowess, luxurious performance, and a rich racing heritage.

Positioned in the rarefied air of high-performance supercars, the Mercedes-Benz SLR McLaren (R199) Roadster 722 S combined breathtaking speed with open-top exhilaration, catering to an elite clientele seeking exclusivity and unparalleled driving dynamics. It was built on a carbon fiber monocoque chassis, a technology directly transferred from McLaren’s Formula 1 expertise, ensuring both exceptional rigidity and lightweight construction. As a two-door, two-seat roadster, it delivered a visceral connection to the road while enveloping its occupants in an environment of bespoke luxury and advanced technology for its era. Its limited production run cemented its status as an instant collector’s item and a significant chapter in the history of both brands.

Engine and Performance of the Mercedes-Benz SLR McLaren (R199) Roadster 722 S

At the heart of the Mercedes-Benz SLR McLaren (R199) Roadster 722 S lies a hand-built AMG M 155.980 engine, a supercharged 5.5-liter (5439 cm³ or 331.91 cu. in.) V8 power plant. This front-longitudinal engine, configured with three valves per cylinder and a SOHC valvetrain, utilizes a multi-port manifold injection system to deliver explosive performance. The “Kompressor” in its name signifies the robust supercharger, complemented by an intercooler, which forces air into the engine, resulting in a remarkable output of 650 horsepower at 6500 rpm. This power figure translates to an impressive 119.5 horsepower per liter, showcasing the engine’s high-strung, race-bred character.

The torque generated by this formidable V8 is equally impressive, peaking at 820 Newton-meters (604.8 lb.-ft.) at a relatively low 4000 rpm, providing a broad and accessible powerband. This immense torque, coupled with a curb weight of 3858.09 lbs. (1750 kg), gives the 722 S an exceptional weight-to-power ratio of 2.7 kg/Hp (371.4 Hp/tonne) and a weight-to-torque ratio of 2.1 kg/Nm (468.6 Nm/tonne). Power is channeled to the rear wheels through an AMG SPEEDSHIFT R 5-speed automatic transmission, a unit renowned for its quick shifts and durability, engineered to handle the engine’s prodigious output.

Performance metrics for the Mercedes-Benz SLR McLaren (R199) Roadster 722 S are nothing short of supercar territory. It can rocket from 0 to 60 mph in a blistering 3.5 seconds (0-100 km/h in 3.7 seconds). The acceleration continues relentlessly, reaching 200 km/h (124 mph) in just 10.6 seconds and 300 km/h (186 mph) in 30.5 seconds. Its top speed is an astounding 208.16 mph (335 km/h), making it one of the fastest production roadsters of its time. Despite its performance focus, Mercedes-Benz provided NEDC fuel consumption figures: 11.3 US mpg in urban driving, 21.8 US mpg on the extra-urban cycle, and a combined 16.2 US mpg. CO2 emissions were rated at 348 g/km, adhering to the Euro 4 emission standard.

Design and Exclusivity of the Mercedes-Benz SLR McLaren (R199) Roadster 722 S

The design of the Mercedes-Benz SLR McLaren (R199) Roadster 722 S is an unmistakable blend of Mercedes-Benz’s grand touring elegance and McLaren’s aerodynamic efficiency. As a roadster, it features a power-operated soft top that allows occupants to experience the full auditory symphony of its supercharged V8. The car’s aggressive stance is defined by its long hood, short rear deck, and distinctive side-exit exhaust pipes, a direct nod to the original 300 SLR. The “722 S” variant further amplified its aggressive aesthetic with unique design elements, including lightweight 19-inch forged alloy wheels finished in gloss black, red-painted brake calipers, and subtle carbon fiber aerodynamic enhancements.

Measuring 183.31 inches (4656 mm) in length, 75.12 inches (1908 mm) in width, and riding on a 106.3-inch (2700 mm) wheelbase, the SLR McLaren 722 S Roadster possesses a commanding presence. The carbon fiber bodywork not only contributes to its lightweight nature but also provides exceptional structural rigidity, crucial for both performance and safety in an open-top vehicle. The interior, though driver-focused, exuded luxury typical of Mercedes-Benz, featuring premium leather, Alcantara, and carbon fiber trim. The two-seat cabin was designed for both comfort on long journeys and support during high-performance driving.

Safety and handling were paramount in the SLR McLaren. The car was equipped with a robust braking system featuring large ventilated discs, 390 mm (15.35 in.) at the front, complemented by an Anti-lock Braking System (ABS). The suspension setup consisted of double wishbones with coil springs at both the front and rear, along with a transverse stabilizer for enhanced stability and cornering prowess. Hydraulic rack and pinion steering provided precise feedback, while the staggered tire setup (255/35 R19 front, 295/30 R19 rear) ensured optimal grip and handling balance. The 722 S also boasted a slightly lower ride height and stiffer suspension tuning compared to the standard SLR Roadster, further sharpening its dynamic capabilities.

Technical Specifications

Legacy and Market Impact

The Mercedes-Benz SLR McLaren (R199) Roadster 722 S holds a significant place in automotive history, representing a unique confluence of German engineering precision and British racing expertise. Its limited production of only 150 units worldwide for the 722 S Roadster variant ensured its exclusivity from the outset, making it a highly coveted vehicle for collectors and enthusiasts alike. The car’s direct lineage to the legendary 300 SLR, through its “722” designation, imbued it with an unmatched historical gravitas, connecting modern supercar performance with a golden era of motorsport.

In its primary markets, particularly in Europe and North America, the SLR McLaren 722 S competed in the upper echelons of the supercar segment. While direct open-top competitors were few, it found itself battling for supremacy and desirability against established names like the Porsche Carrera GT, the Ferrari Enzo (though a coupe), and the Aston Martin V12 Vanquish S. What set the SLR apart was its unique blend of a brutal supercharged V8, grand touring comfort, and a distinctly Anglo-Germanic character. It wasn’t just a track weapon; it was a continent-crossing missile that could devour miles with both ferocious speed and surprising refinement for a car of its capabilities.

The market impact of the Mercedes-Benz SLR McLaren (R199) Roadster 722 S extends beyond its initial sales. Today, it is regarded as a modern classic and a strong investment piece. Its status as the ultimate variant of the SLR McLaren Roadster, coupled with its historical homage and the short-lived partnership between Mercedes-Benz and McLaren in road car production, contributes to its enduring appeal. It serves as a powerful reminder of an era when supercars were beginning to push boundaries of performance and technology, yet still retained a raw, mechanical feel. The 722 S Roadster’s reputation for uncompromising performance, stunning design, and exceptional rarity ensures its place in the pantheon of automotive greats. It stands as a testament to what can be achieved when two engineering powerhouses unite to create something truly extraordinary.