The Mercedes Benz Sl65 AMG stands as a testament to automotive excellence, blending breathtaking performance with luxurious refinement. At the heart of this iconic roadster lies the formidable AMG 6.0-liter V12 biturbo engine, a powerhouse that delivers an astounding 621 horsepower and a staggering 738 lb-ft of torque. This potent combination of power and engineering prowess ensures the SL65 AMG is not just a car, but an experience.
The visual appeal of the Mercedes Benz SL65 AMG is immediately striking. The front end is characterized by the distinctive “twin-blade” grille, a hallmark of AMG design. This grille, featuring two blade-shaped fins and a lower horizontal bar, all finished in high-gloss chrome, not only enhances the car’s aggressive stance but also optimizes airflow. The all-aluminum body-in-white construction plays a crucial role in reducing the overall weight, making the MY14 SL65 AMG a remarkable 254 pounds lighter than its predecessor. This weight reduction contributes significantly to both performance and fuel efficiency.
Performance and Efficiency: A Harmonious Blend
The intelligent lightweight design of the Mercedes Benz SL65 AMG extends beyond just the body shell. It’s a philosophy that permeates every aspect of the vehicle’s engineering, contributing to enhanced fuel consumption without compromising on the exhilarating performance AMG is known for. Key to this efficiency is the AMG SPEEDSHIFT PLUS 7-Speed transmission, working in concert with the ECO stop/start function and optimized engine and alternator management systems.
The AMG 6.0-liter V12 biturbo engine, the soul of the Mercedes Benz SL65 AMG, represents a significant leap in power compared to previous models. Boosting the output from 604 hp to 621 hp (comparing MY2012 to MY2014), this engine delivers unparalleled performance. The immense torque of 738 lb-ft ensures breathtaking acceleration, propelling the SL65 AMG from 0 to 60 mph in a mere 3.9 seconds. For the US market, the top speed is electronically limited to 186 mph. The defining characteristics of this AMG V12 engine are its instantaneous acceleration, seamless power delivery, and the signature, deeply resonant AMG V12 soundtrack. The Mercedes Benz SL65 AMG truly captures the essence of refined, high-performance driving.
Advanced Engine Technology and Design
The AMG 6.0-liter V12 biturbo engine (M 279) is an evolution of the M 275 unit, meticulously refined for the Mercedes Benz SL65 AMG. Significant advancements include a multi-spark ignition system with twelve twin ignition coils, ensuring smoother operation. This system, coupled with a more powerful engine management system and optimized cylinder heads, results in more efficient combustion. The benefits are twofold: enhanced performance and reduced exhaust emissions, further aided by an improved catalytic converter system.
The redesigned AMG sport exhaust system is another testament to AMG’s commitment to performance and efficiency. Featuring a modified pipe layout for improved flow and a weight reduction of seven pounds due to thinner walls, the exhaust system contributes to both the engine’s responsiveness and the car’s overall agility. Beyond its technical prowess, the engine’s aesthetics are equally impressive. The carbon-fiber and aluminum engine cover not only protects the engine but also visually emphasizes the exceptional nature of the V12 powerhouse underneath.
AMG SPEEDSHIFT PLUS 7-Speed Transmission: Precision and Control
The Mercedes Benz SL65 AMG harnesses the immense power of its V12 engine through the AMG SPEEDSHIFT PLUS 7-Speed transmission. This advanced transmission is engineered for both performance and efficiency. Its wide ratio spread allows for lower engine revving, contributing to reduced fuel consumption, especially at cruising speeds. A new fuel-economy torque converter, low-friction bearings, and sophisticated transmission oil thermal management further optimize power transfer to the wheels.
The AMG SPEEDSHIFT PLUS 7-Speed transmission offers four distinct drive programs, selectable via a button on the center console: Controlled Efficiency (C), Sport (S), Sport plus (S+), and Manual (M). In “C” mode, the ECO stop/start function is always active, maximizing fuel efficiency. For drivers seeking a more engaging and dynamic experience, the “S,” “S+,” and “M” modes deliver progressively sportier responses. These modes feature an automatic double-declutch function for downshifting and rapid, precise ignition and injection retardation during upshifts under full load, minimizing shift times and maximizing driver involvement.
Intelligent Lightweight Design: Aluminum and Carbon Fiber Innovation
The Mercedes Benz SL65 AMG pioneers intelligent lightweight design, utilizing an all-aluminum body-in-white structure. Compared to steel constructions, aluminum offers significant weight savings, enhanced stiffness, improved safety, and increased comfort. This intelligent design philosophy extends to component optimization, employing various aluminum processes such as gravity die casting, vacuum pressure casting, extruded profiles, and aluminum sheets of varying thicknesses. The result is a chassis that achieves high levels of stiffness, safety, and refined vibration characteristics. Magnesium, even lighter than aluminum, is used for parts like the cover behind the fuel tank, while high-strength steel tubes are integrated into the A-pillars for crucial safety reinforcement.
Further weight reduction is achieved through innovative use of carbon composite material in the rear decklid’s internal frame. The plastic exterior shell is bonded to this incredibly stiff carbon component, resulting in an eleven-pound weight saving compared to a conventional rear lid. This innovative solution, initially implemented in AMG’s SL models, is a key contributor to the Mercedes Benz SL65 AMG’s remarkable curb weight of 4,299 pounds – a significant 254 pounds less than the previous model.
AMG Sport Suspension and Steering: Precision Handling
Chassis engineering in the Mercedes Benz SL65 AMG prioritizes lightweight construction. The four-link front suspension incorporates aluminum steering knuckles and control arms, a material extensively used throughout the multilink rear axle suspension components. Reducing unsprung masses not only enhances agility but also improves the responsiveness of the spring and damper units. The SL65 AMG comes standard with the Active Body Control (ABC) active suspension system. This AMG sport suspension, based on ABC, is an evolution of the system found in the SL63 AMG, specifically tuned for the unique characteristics of the V12 engine.
Handling and performance were paramount during the development of the Mercedes Benz SL65 AMG’s chassis. Drivers can select between two chassis settings at the touch of a button: “Sport,” for a very sporty setup with reduced roll rate and tighter body damping, and “Comfort,” for a more compliant ride suitable for long distances. Increased negative camber on both axles and re-engineered elastokinematics contribute to enhanced agility and higher cornering speeds.
Complementing the advanced suspension is the new electromechanical AMG speed-sensitive sports steering. This system provides exceptional dynamics and clear feedback, especially at the limits of performance. The steering ratio is constant and direct, while power assistance adjusts based on the selected chassis mode. Standard features also include 3-stage ESP®, an AMG exclusive with “SPORT Handling” mode for spirited driving. The immense engine power is effectively managed by the standard AMG rear-axle locking differential.
High-Performance Braking System and AMG Design Cues
The Mercedes Benz SL65 AMG is equipped with an AMG high-performance braking system, ensuring top-tier deceleration, precise modulation, and exceptional stability. The front axle features 15.4 x 1.4-inch compound discs with six-piston fixed calipers, while the rear axle utilizes 14.2 x 1.0-inch integral discs with single-piston floating calipers. An electric parking brake is standard. For even greater braking performance, the weight-optimized AMG carbon ceramic brake system, derived from the SLS AMG, is available as an option.
Visually, the Mercedes Benz SL65 AMG is instantly recognizable as a high-performance, exclusive roadster. It showcases the new AMG “face,” characterized by the twin-blade grille and reinterpreted lower air inlet, exuding a more dynamic and premium aesthetic. The twin-blade grille, finished in high-gloss chrome, is a central design element, featuring the Mercedes star mounted on two blade-like fins with aerofoil profiles. The grille’s arrow-form enhances the car’s proportions, emphasizing its aerodynamic and minimalist design.
The stylized “A” emblem, a hallmark of AMG vehicles, is positioned beneath the twin-blade grille. The lower air intake incorporates a slit and a black fin for optimized airflow to the cooling modules, blending design with functionality. A high-gloss chrome horizontal bar on the front skirt adds visual depth, creating a premium accent. These design elements, including the twin-blade grille and lower horizontal bar, define the contemporary AMG brand “face,” ensuring immediate recognition of AMG performance vehicles.
Further distinguishing the Mercedes Benz SL65 AMG from the SL63 AMG are meticulously applied high-gloss chrome accents. These include the twin-blade grille, the lower horizontal bar on the AMG front skirt, bezels in the AMG-specific LED daytime running lights, side fins on the fenders, and hood fins. The characteristic AMG styling extends to the front skirt with large cooling openings, specially designed sill panels, an AMG spoiler lip, and a rear skirt with a diffuser-look inlay in body color.
Typical V12 design cues include the two chromed, standalone dual end pipes of the AMG sports exhaust and the “V12 BITURBO” lettering on the fenders. Titanium grey painted and polished 5-spoke AMG alloy wheels, sized 255/35 ZR 19 at the front and 285/30 ZR 19 at the rear, are standard. Optional AMG forged alloy multi-spoke wheels from the AMG Performance Studio, with 255/35 R 19 front and 285/30 R 20 rear tires, reduce unsprung mass and are available in matte black with polished outer rims.
Retractable Hard-Top and Luxurious Interior
The sixth-generation SL, including the Mercedes Benz SL65 AMG, features a space-saving electro-hydraulic retractable hard-top, transforming the roadster into a coupe in under 20 seconds. A unique feature is the MAGIC SKY CONTROL, allowing the roof’s transparency to be switched from light to dark at the touch of a button, enhancing the open-air experience or providing shade and privacy.
Inside, the Mercedes Benz SL65 AMG distinguishes itself with exclusive design and equipment features. Electrically adjustable AMG sports seats, upholstered in exclusive leather with AMG-specific V12 diamond stitching, are a visual highlight. This distinctive stitching is also found on the center door panels. The AMG logo embossed on the seatbacks is standard, while the designo headliner in leather with AMG V12 diamond stitching adds a touch of bespoke luxury.
The cockpit design echoes the SLS AMG, with jet-engine style air vents, the E-SELECT gear lever, and the AMG DRIVE UNIT. Exquisite materials and meticulous craftsmanship define the interior, underscored by AMG trim elements in carbon, an IWC-design analog clock, chromed and white illuminated AMG entry trim, and an AMG performance steering wheel with an AMG logo. The AMG instrument panel, with a 225 mph scale and an AMG start-up display featuring an exclusive AMG V12 BITURBO animation, hints at the SL65 AMG’s phenomenal performance capabilities.
Standard equipment is extensive and includes features like the AIRSCARF neck-level heating system, PARKTRONIC with Active Parking Assist, DISTRONIC PLUS with PRE-SAFE Brake, Active Blind Spot Assist, Active Lane Keeping Assist, a Bang & Olufsen BeoSound AMG Surround Sound System, carbon fiber trim, COMAND with navigation, MAGIC SKY CONTROL, and much more.
Optional enhancements from the AMG Performance Studio include the AMG Carbon Ceramic Braking System and the AMG Exterior Carbon Fiber Package, allowing for further personalization and performance upgrades.
Safety and Security: A World-Class Roadster
The Mercedes Benz SL65 AMG is not only a high-performance machine but also one of the world’s safest roadsters. Its collision-optimized aluminum structure, standard PRE-SAFE® System, and suite of advanced assistance systems, comparable to the S-Class, ensure exceptional safety. The stiff aluminum body-in-white forms a robust occupant cell with precisely defined crumple zones. In case of a rollover, A-pillars made of a steel/aluminum mix and two automatic pop-up rollover bars provide outstanding protection for occupants.
Advanced restraint systems, including two-stage driver and passenger airbags and head/thorax side impact airbags, are standard. NECK-PRO Active Head Restraints and pedestrian-friendly design features further enhance safety. The Mercedes Benz SL65 AMG embodies a commitment to both thrilling performance and uncompromising safety.
