The Mercedes-benz Cls 63 Amg has long been synonymous with breathtaking performance and sophisticated luxury. For the 2014 model year, the bar is raised even higher with a performance upgrade across the CLS 63 AMG four-door coupe line and the introduction of the exhilarating new CLS 63 AMG S-Model. This new flagship variant takes the already impressive CLS 63 AMG to unprecedented levels of power and handling, solidifying its position at the pinnacle of the high-performance coupe segment.
The heart of the CLS 63 AMG S-Model is the potent AMG 5.5-liter V8 biturbo engine, meticulously engineered to unleash a staggering 577 horsepower and 590 lb.-ft. of torque. This remarkable engine, known internally as the M157, continues to be a testament to AMG’s commitment to efficiency, delivering an unparalleled combination of high performance and surprisingly commendable fuel economy within its class. Complementing this powerhouse is the integration of performance-oriented AMG 4MATIC all-wheel drive, ensuring optimal power delivery and control in all driving conditions.
Enhanced Power and S-Model Exclusivity
While the standard CLS 63 AMG is already a formidable machine, the S-Model elevates performance to new heights. The AMG 5.5-liter V8 biturbo engine in the S-Model produces an additional 27 horsepower and 59 lb.-ft. of torque compared to the standard model. This power increase is achieved through refined engine electronics and a boosted turbo pressure, now operating at 1.0 bar compared to the standard 0.9 bar. It’s worth noting that even the base CLS 63 AMG sees a significant power bump of 32 horsepower over its predecessor, highlighting AMG’s continuous pursuit of performance enhancement across the range.
Despite these significant power gains, both models maintain impressive fuel efficiency and low emissions, a testament to the advanced engineering of the AMG 5.5-liter V8 biturbo engine, recognized as the most efficient high-performance V8 in series production globally.
AMG 4MATIC: Performance-Oriented All-Wheel Drive
Mercedes-AMG is expanding its lineup of high-performance vehicles equipped with AMG 4MATIC all-wheel drive. This system, engineered for sporty driving dynamics, provides a level of performance and traction previously unseen in this vehicle segment. Joining the ranks of successful AMG SUVs like the ML 63 AMG, GL 63 AMG, and G 63 AMG, the CLS 63 AMG S-Model, alongside select CLA and E-Class models, now benefits from this sophisticated system as standard.
Ola Källenius, CEO of Mercedes-AMG GmbH, emphasizes the S-Model’s unique appeal: “The S-Models in particular represent the most attractive proposition in the segment. With its superlative power and torque ratings and the new performance-oriented AMG 4MATIC all-wheel drive, the CLS 63 AMG is without parallel in its Coupe variants.” He further adds, “Our AMG 5.5-liter V8 engine remains the most efficient series production V8 engine in the world. The new, customized model variants provide greater scope than ever for individual solutions.”
| 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 |
The performance figures speak for themselves. The CLS 63 AMG S-Model 4MATIC achieves a blistering 0-60 mph acceleration in just 3.6 seconds, placing it firmly at the top of its competitive set. This exceptional acceleration is not only due to the increased power output but also to the performance-oriented all-wheel drive system, which features a rear-biased 33:67 front-rear power distribution for optimal traction and dynamic handling. The electronically limited top speed of the S-Model is an impressive 186 mph, further distinguishing it from the standard model.
AMG SPEEDSHIFT MCT 7-Speed Sports Transmission
The AMG SPEEDSHIFT MCT 7-Speed sports transmission is a key component in delivering the CLS 63 AMG’s exhilarating driving experience. This transmission offers a range of customizable settings to suit various driving styles and conditions. Four distinct drive programs – “C” (Controlled Efficiency), “S” (Sport), “S+” (Sport plus), and “M” (Manual) – allow drivers to tailor the car’s responsiveness to their preferences.
In “C” mode, the transmission prioritizes smooth and comfortable gear changes, activating the ECO start/stop function to enhance fuel efficiency by shutting off the V8 engine at idle. The car typically starts in second gear in this mode for smoother launches. Switching to “S”, “S+”, or “M” modes transforms the driving character, sharpening engine and transmission response and deactivating the ECO start/stop function. These modes are designed for a more engaging and sporty driving experience, featuring rapid gear shifts accompanied by a thrilling sound, achieved through momentary suppression of ignition and injection during full-throttle upshifts. Standard features also include automatic rev-matching during downshifts and RACE START for optimized launch control.
Performance-Oriented All-Wheel Drive: Maximizing Driving Excitement
The AMG 4MATIC all-wheel drive system in the CLS 63 AMG is engineered to maximize driving enjoyment while ensuring exceptional traction and control. Its rear-biased torque distribution (33:67 front to rear) provides the characteristic agility and handling feel of a rear-wheel-drive vehicle, enhanced by the benefits of all-wheel traction. The 3-stage ESP® (Electronic Stability Program) system is specifically calibrated to work in harmony with the all-wheel-drive system. In “SPORT Handling” mode, the Torque Vectoring Brake system further enhances agility by selectively braking individual wheels to induce precise turn-in and neutral steering behavior during cornering.
The core of the AMG 4MATIC system is a transfer case seamlessly integrated into the AMG SPEEDSHIFT MCT 7-Speed sports transmission. This compact design minimizes added weight, contributing only approximately 155 lbs to the vehicle. Power is transferred to the front differential via a propeller shaft, and an intermediate shaft running through a sealed duct in the engine oil pan delivers power to the left front wheel. A multi-plate clutch with a 37 lb.-ft. locking force regulates torque distribution to all four wheels as needed, optimizing traction in various driving scenarios.
CLS 63 AMG S-Model: Enhanced Traction with Limited-Slip Rear Differential
The CLS 63 AMG S-Model takes traction and handling a step further with a standard limited-slip differential integrated into the rear final drive. This advanced feature significantly enhances traction, particularly during spirited driving and on the racetrack, providing improved vehicle dynamics and even greater driving pleasure.
AMG Adaptive Sports Suspension
All CLS 63 AMG models are equipped with AMG Adaptive Sports Suspension, featuring electronically controlled damping. This system allows drivers to adjust suspension firmness on the fly, switching between “Comfort,” “Sport,” and “Sport Plus” modes via a button on the AMG DRIVE UNIT. The front suspension utilizes a steel-spring setup, while the rear axle incorporates a load-leveling air suspension system, ensuring a balance of comfort and performance.
The front three-link suspension has been further refined for the S-Model and the all-wheel-drive CLS 63 AMG variants. Newly developed aluminum control arms improve grip, agility, and steering neutrality during high-speed cornering. The S-Model benefits from even more performance-focused elastokinematics, offering enhanced handling feedback and wheel grip at the limits of adhesion. A wider front track (increased by 0.9 inches or 2.4 cm) enhances stability during cornering and improves road feel. Increased negative camber on all wheels further contributes to enhanced cornering prowess.
AMG’s electromechanical speed-sensitive steering complements the chassis setup, offering a direct 14:1 rack-and-pinion steering ratio for agile handling. The variable power assist adapts based on the selected suspension mode, providing optimal steering feel in all driving situations.
The S-Model distinguishes itself visually with exclusive 10-spoke light-alloy wheels finished in matte titanium gray with a high-sheen rim flange. The standard CLS 63 AMG features triple five-spoke light-alloy wheels painted titanium gray with a high-sheen finish. Both models are equipped with staggered tire sizes: 255/35 tires on 9 x 19-inch wheels at the front and 285/30 tires on 10 x 19-inch wheels at the rear.
Optional AMG Ceramic High-Performance Composite Brake System
The CLS 63 AMG boasts a high-performance AMG braking system with substantial 14.2-inch ventilated and perforated brake discs at both front and rear. The front discs incorporate AMG’s compound disc technology, rigorously tested in motorsport, to withstand extreme heat. Standard CLS 63 AMG models feature grey-finished brake calipers with white AMG lettering, employing six pistons at the front and four at the rear for exceptional stopping power, fade resistance, and short stopping distances.
For the ultimate in braking performance, the CLS 63 AMG S-Model offers an optional AMG ceramic composite brake system. Easily identifiable by their even larger 15.8-inch brake discs and bronze metallic calipers adorned with the “AMG Carbon Ceramic” logo, these brakes provide superior resistance to extreme temperatures and offer extended service life. Furthermore, the ceramic system reduces unsprung mass by approximately 40 percent, leading to improvements in handling, agility, and ride comfort.
S-Model Design Distinctions
The CLS 63 AMG S-Model features subtle yet distinctive design cues that set it apart. Red brake calipers and an “S” in contrasting black on the AMG logo on the trunk lid immediately identify the S-Model. Inside, the standard black premium nappa leather interior of the S-Model is enhanced with silver seat belts and contrasting gray stitching on the AMG sports seats, door panels, armrests, steering wheel, and center console. The AMG Performance steering wheel, trimmed in black premium leather with Alcantara® grip areas, features a flattened top and bottom. The front head restraints of the AMG sports seats in the S-Model are embossed with the AMG crest in the premium leather. The AMG instrument cluster also features 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 interior appointments.
Bang & Olufsen BeoSound AMG High-End Surround Sound System
For audiophiles, the optional Bang & Olufsen BeoSound AMG high-end surround sound system is a standout feature available for all CLS models. Developed in collaboration with renowned Danish audio specialists Bang & Olufsen, this system delivers an unparalleled audio experience. Boasting a 1,200-watt amplifier and 14 high-end speakers with neodymium drivers, and supporting Dolby Digital 5.1 playback, the system utilizes a digital sound processor (DSP) to optimize music signal distribution.
The COMAND system provides access to a dedicated B&O sound menu, offering True Image™ mode for individual sound adjustments for front, center, and rear listening positions, creating a realistic and immersive soundstage. The “Sound Mode” menu offers preset modes, including “Reference” for studio-quality sound and a special surround sound mode for a spacious listening experience, 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 further distinguish this exceptional audio system.
The Mercedes-Benz CLS 63 AMG 4MATIC and the new CLS 63 AMG S-Model 4MATIC marked their U.S. market launch in August 2013, bringing a new era of performance and luxury to the four-door coupe segment.
