The Mercedes-Benz CLS 63 AMG has always been synonymous with power and elegance, and the introduction of the CLS 63 AMG S-Model in the 2014 lineup takes this legacy to exhilarating new heights. This model isn’t just an upgrade; it’s a statement, representing the pinnacle of performance within the CLS four-door coupe range. For discerning drivers who demand the ultimate in power, handling, and exclusivity, the S-Model delivers an unparalleled driving experience.
At the heart of this performance beast lies an enhanced AMG 5.5-liter V8 biturbo engine, a marvel of engineering that redefines efficiency in the high-performance segment. This powerhouse now churns out an astounding 577 horsepower and 590 lb.-ft. of torque, ensuring breathtaking acceleration and relentless power delivery across the rev range. Mercedes-AMG has masterfully combined this raw power with surprising fuel efficiency, a testament to their engineering prowess and commitment to pushing boundaries.
Further amplifying its dynamic capabilities, the CLS 63 AMG S-Model features the performance-oriented AMG 4MATIC all-wheel-drive system. This advanced system, meticulously engineered by AMG, provides a level of grip and control previously unheard of in this vehicle class. By distributing power intelligently and efficiently, 4MATIC ensures optimal traction in all conditions, translating to blistering acceleration and confident handling, especially when pushing the limits. This system is not just about enhanced grip; it’s about transforming power into pure, unadulterated driving excitement.
Ola Källenius, CEO of Mercedes-AMG GmbH, aptly describes the S-Models as the “most attractive proposition in the segment.” He emphasizes the unique combination of “superlative power and torque ratings” with the “new performance-oriented AMG 4MATIC all-wheel drive,” positioning the CLS 63 AMG S-Model as a vehicle without equal in the coupe segment. The customizable nature of these models further enhances their appeal, offering drivers unprecedented scope for personalization and tailoring to individual preferences.
| CLS 63 AMG 4MATIC 4-door Coupe | CLS 63 AMG S-Model 4MATIC 4-door Coupe | |
|---|---|---|
| Displacement | 5.5-liter | 5.5-liter |
| Rated power output | 550 hp at 5,250 – 5,750 rpm | 577 hp at 5,500 rpm |
| Peak torque | 531 lb.-ft. at 1,750 – 5,000 rpm | 590 lb.-ft. at 2,000 – 4,500 rpm |
| Acceleration 0-60 mph (prelim) | 3.7 seconds | 3.6 seconds |
| Top speed (electronically limited) | 155 mph | 186 mph |
Performance Redefined: Engine and Drivetrain Advancements
The performance figures of the Mercedes CLS 63 AMG S-Model speak volumes. Achieving 0-60 mph in a mere 3.6 seconds, it firmly establishes its position at the top of its competitive landscape. This exceptional acceleration is not solely attributed to the increased horsepower; the performance-oriented all-wheel drive system plays a crucial role. With a rear-biased power distribution of 33:67, the system prioritizes engaging driving dynamics while ensuring optimal traction. This intelligent power distribution minimizes wheel slip during hard acceleration, allowing the S-Model to launch with incredible force. The electronically limited top speed is raised to an impressive 186 mph, further highlighting its high-performance credentials.
The heart of the S-Model’s performance upgrade is the meticulously tuned AMG 5.5-liter V8 biturbo engine. It now generates 577 horsepower and 590 lb.-ft. of torque, a significant increase of 27 horsepower compared to the previous AMG Performance Package. This power boost is achieved through refined engine electronics and increased turbo boost pressure, elevating it from 0.9 to 1.0 bar. Even the standard CLS 63 AMG model benefits from advancements, boasting 550 hp and 531 lb.-ft. of torque, representing a 32 hp increase over its predecessor. Despite these power enhancements, Mercedes-AMG has maintained a focus on efficiency, ensuring that all models offer commendable fuel mileage and low emissions, reinforcing the engine’s status as the most efficient high-performance V8 in production.
AMG SPEEDSHIFT MCT 7-Speed Sports Transmission: Precision and Adaptability
Complementing the potent engine is the AMG SPEEDSHIFT MCT 7-Speed sports transmission, engineered for both responsiveness and driver customization. This transmission offers four distinct drive programs: “C” (Controlled Efficiency), “S” (Sport), “S+” (Sport plus), and “M” (Manual), allowing drivers to tailor the vehicle’s behavior to their preferences and driving conditions.
In “C” mode, the focus is on smooth and comfortable gear changes, ideal for everyday driving. The ECO start/stop feature is activated, enhancing fuel efficiency by shutting off the V8 engine when the car is stationary. In this mode, the vehicle typically starts in second gear for smoother launches.
Switching to “S,” “S+,” or “M” modes transforms the driving experience. The engine and transmission become noticeably more responsive and agile, with the ECO start/stop function deactivated. These modes are optimized for sporty driving, featuring rapid gear shifts accompanied by a thrilling exhaust note. Momentary suppression of ignition and injection during full-throttle upshifts results in lightning-fast gear changes. The transmission also includes automatic rev-matching during downshifts and RACE START functionality as standard, further enhancing its performance capabilities.
Performance-Oriented 4MATIC All-Wheel Drive: Mastering Traction and Handling
The performance-oriented AMG 4MATIC all-wheel-drive system in the CLS 63 AMG S-Model is a key differentiator, distributing engine torque with a rear-biased ratio of 33:67 between the front and rear axles. This rear-wheel-drive emphasis contributes to the vehicle’s engaging driving dynamics and agile handling, providing the feel of a rear-wheel-drive sports car with the added security of all-wheel traction.
The 3-stage ESP® (Electronic Stability Program) system is specifically calibrated to work in harmony with the full-time all-wheel-drive system. In “SPORT Handling” mode, the Torque Vectoring Brake system selectively applies braking force to individual wheels, enhancing agility and responsiveness. Subtle braking of the inside rear wheel during cornering promotes neutral steering behavior and improves turn-in.
The AMG 4MATIC system’s core component is a transfer case seamlessly integrated with the AMG SPEEDSHIFT MCT 7-Speed sports transmission. This compact design minimizes space intrusion and adds only approximately 155 lbs to the vehicle’s weight. A multi-plate clutch regulates torque distribution to all four wheels as needed, optimizing traction and stability.
S-Model Exclusivity: Limited-Slip Differential and Enhanced Dynamics
The CLS 63 AMG S-Model takes performance a step further with a standard limited-slip rear differential. This advanced component, integrated within the rear final drive, further enhances traction, particularly during spirited driving and on track environments. By optimizing power delivery to the rear wheels, the limited-slip differential improves vehicle dynamics and maximizes driving enjoyment.
All CLS 63 AMG models are equipped with AMG Adaptive Sports Suspension, featuring electronically controlled damping. Drivers can easily switch between “Comfort,” “Sport,” and “Sport Plus” modes via a dedicated button in the AMG DRIVE UNIT. The front suspension utilizes a steel-spring system, while the rear axle features a load-leveling air suspension system, ensuring a balance of handling and ride comfort.
The S-Model and the all-wheel-drive CLS 63 AMG variants benefit from a refined three-link front suspension design, incorporating newly developed aluminum control arms. These enhancements improve grip, agility, and steering neutrality during high-speed cornering. The S-Model features exclusive performance-oriented elastokinematics, providing even more neutral handling, improved feedback, and enhanced wheel grip at the limits of adhesion. A wider front track further contributes to stability at high cornering speeds and improved road feel. Increased negative camber on all wheels further optimizes cornering prowess.
AMG’s electromechanical speed-sensitive steering further complements the chassis setup. A 14:1 rack-and-pinion steering ratio ensures agile handling, while variable power assist adapts to the selected suspension mode, providing optimal steering feel in all driving situations.
The high-performance S-Model is visually distinguished by exclusive 10-spoke light-alloy wheels finished in matte titanium gray with a high-sheen rim flange. Standard CLS 63 AMG models feature triple five-spoke light-alloy wheels in titanium gray with a high-sheen finish. Both models are equipped with staggered tire setups, featuring 255/35 tires on 9 x 19-inch front wheels and 285/30 tires on 10 x 19 rear wheels.
Optional AMG Ceramic High-Performance Composite Brake System: Uncompromising Stopping Power
The CLS 63 AMG models are equipped with a high-performance AMG braking system featuring substantial 14.2-inch ventilated and perforated brake discs both front and rear. The front discs utilize AMG’s compound disc technology, proven in motorsport, to withstand extreme heat. Standard CLS 63 AMG models feature grey-finished brake calipers with white AMG lettering, incorporating six pistons at the front and four at the rear, delivering powerful, fade-resistant braking and short stopping distances.
For the ultimate in braking performance, an optional AMG ceramic composite brake system is exclusively available for the S-Model. Easily identifiable by even larger 15.8-inch brake discs and bronze metallic calipers with “AMG Carbon Ceramic” logos, this system offers exceptional heat resistance and extended service life due to the inherent hardness of ceramic brake discs. The ceramic system also reduces unsprung mass by approximately 40 percent, further enhancing handling, agility, and ride comfort.
S-Model Design Differentiation: Subtle Yet Striking Details
The CLS 63 AMG S-Model is subtly distinguished by red brake calipers and an “S” in contrasting black on the AMG logo adorning the trunk lid. Inside, the standard black premium nappa leather interior of the S-Model is accented by silver seat belts and contrasting gray stitching on the AMG sports seats, center door panels, door armrests, steering wheel, and center console. The AMG Performance steering wheel, trimmed in black premium leather with Alcantara® grip areas, is flattened at the top and bottom for a sporty feel. The front head restraints of the AMG sports seats feature embossed AMG crests. The AMG instrument cluster incorporates an “S AMG” logo on the speedometer and red accents on the dials. Illuminated AMG door sill panels with white backlighting complete the exclusive S-Model appointments.
Bang & Olufsen BeoSound AMG High-End Surround Sound System: An Auditory Masterpiece
An exceptional optional feature for all CLS models is the Bang & Olufsen BeoSound AMG high-end surround sound system. Developed in collaboration with renowned Danish audio specialists Bang & Olufsen, this system delivers an unparalleled auditory experience. Capable of Dolby Digital 5.1 playback, it boasts a 1,200-watt amplifier, 14 high-end speakers with neodymium drivers, and a digital sound processor (DSP) for optimized sound distribution.
The DSP offers a dedicated B&O sound menu within the COMAND system, featuring True Image™ mode for customizable sound settings for front, center, and rear positions, creating a realistic soundstage at the selected listening point. The “Sound Mode” menu offers presets ranging from “Reference” studio sound to immersive surround sound. “Reference” mode prioritizes faithful reproduction of the artist’s intended sound, while surround sound mode creates a spacious listening environment, particularly enhancing live recordings and concertos.
Illuminated 50-watt tweeters with acoustic lens technology in the mirror triangles and high-end speaker covers in silver chrome with Bang & Olufsen logos visually distinguish this exceptional sound system.
The Mercedes CLS 63 AMG 4MATIC and the new CLS 63 AMG S-Model 4MATIC marked their U.S. market launch in August 2013, ushering in a new era of performance and luxury in the four-door coupe segment. The S-Model, in particular, stands as a testament to AMG’s relentless pursuit of automotive excellence, offering an unmatched blend of power, precision, and exclusivity for the most discerning drivers.
