Mercedes-Benz amplified its four-door coupe legacy with the introduction of the 2014 Mercedes Cls 63 AMG lineup, showcasing not just a performance upgrade but also a brand-new model: the CLS 63 AMG S-Model. This iteration took the already impressive CLS 63 AMG to new heights, especially with the S-Model variant boasting performance-tuned AMG 4MATIC all-wheel drive and a potent AMG 5.5-liter V8 biturbo engine. This powerhouse now churned out an impressive 577 horsepower and 590 lb.-ft. of torque, solidifying its position as a leader in its segment. The AMG 5.5-liter V8 biturbo engine, internally known as the M157, remained a marvel of engineering, uniquely combining high-octane performance with surprising fuel efficiency, a feat unmatched globally in its class.
Mercedes-AMG’s commitment to high performance extended across its sedan and coupe range, integrating an AMG-engineered version of the 4MATIC all-wheel-drive system. This system, designed for spirited driving, delivered an unprecedented level of performance for the segment. Beyond the already successful AMG SUVs like the ML63 AMG, GL63 AMG, and G63 AMG, the CLA, E-Class, and CLS-Class lines now featured five distinct models equipped with the standard high-performance AMG 4MATIC system.
Ola Källenius, CEO of Mercedes-AMG GmbH, highlighted the significance of these models, stating, “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 and Shooting Brake variants. 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.”
2014 CLS 63 AMG Lineup: Power and Specifications
The 2014 CLS 63 AMG range presented two compelling options for discerning drivers: the standard CLS 63 AMG 4MATIC and the upgraded CLS 63 AMG S-Model 4MATIC. The S-Model distinguished itself through enhanced power and performance figures, catering to those seeking the ultimate driving experience.
| 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 |
This table clearly illustrates the performance edge of the S-Model. Achieving 0-60 mph in a mere 3.6 seconds, the 2014 CLS 63 AMG S-Model 4MATIC firmly positioned itself at the forefront of its competitive landscape. This superior performance wasn’t solely due to increased power; the performance-oriented all-wheel drive system with a 33:67 front-rear power distribution played a crucial role. This setup ensured optimal traction during acceleration, minimizing wheel slip and contributing to its electronically limited top speed of 186 mph.
Engine and Performance Enhancements in the S-Model
Under the hood of the new CLS 63 AMG S-Model, the AMG 5.5-liter V8 biturbo engine delivered a staggering 577 horsepower and 590 lb.-ft. of torque. This represented a significant 27 hp increase over the AMG Performance Package previously offered as an option. This power boost was achieved through refined engine electronics and increased turbo boost pressure, elevated from 0.9 to 1.0 bar. Even the standard CLS 63 AMG model saw an increase of 32 hp over its predecessor, now producing 550 hp and 531 lb.-ft. of torque.
Despite these power gains and enhanced performance metrics, all 2014 CLS 63 AMG models maintained commendable fuel mileage and low exhaust emissions. The AMG 5.5-liter V8 biturbo engine continued to be recognized as the most efficient high-performance V8 engine in production, a testament to AMG’s engineering prowess.
AMG SPEEDSHIFT MCT 7-Speed Sports Transmission
The 2014 Mercedes CLS 63 AMG models featured the AMG SPEEDSHIFT MCT 7-Speed sports transmission, a key component in delivering a dynamic driving experience. This transmission offered customizable settings through four drive programs: “C” (Controlled Efficiency), “S” (Sport), “S+” (Sport plus), and “M” (Manual), allowing drivers to tailor the car’s behavior to their preferences and driving conditions.
In “C” mode, the focus was on smooth and comfortable gearshifts. The ECO start/stop feature was activated, conserving fuel by turning off the V8 engine at a standstill, and the car typically started in second gear for smoother launches.
Switching to “S”, “S+”, or “M” modes transformed the driving dynamics, making the engine and transmission noticeably more responsive and agile. The ECO start/stop function was deactivated in these modes, prioritizing performance. For a truly sporty driving style, the transmission employed momentary suppression of ignition and injection during full-throttle upshifts, resulting in rapid gear changes accompanied by an exhilarating sound. Automatic rev-matching during downshifts and RACE START functionality were also standard features, further enhancing the sporty character of the 2014 CLS 63 AMG.
Performance-Oriented 4MATIC All-Wheel Drive
A significant feature of the 2014 CLS 63 AMG was its performance-oriented AMG 4MATIC all-wheel drive system. This system intelligently distributed engine torque at a 33:67 ratio between the front and rear wheels. This rear-biased torque split was crucial in providing exceptional driving fun and handling agility, characteristic of rear-wheel-drive sports cars while offering the added grip and stability of all-wheel drive.
The 3-stage ESP® (Electronic Stability Program) was specifically calibrated to complement the full-time all-wheel drive system. In “SPORT Handling” mode, the Torque Vectoring Brake system selectively applied braking force to individual wheels, further enhancing agility and cornering prowess. By subtly braking the inside rear wheel during поворотах, the system facilitated impressively neutral steering response during corner entry.
The core of the AMG 4MATIC system was a transfer case seamlessly integrated with the AMG SPEEDSHIFT MCT 7-Speed sports transmission. This compact design minimized added weight, with the entire all-wheel-drive system adding only approximately 155 lbs. Torque transfer from the power take-off occurred via a propeller shaft to the front differential, and power was delivered to the left front wheel via an intermediate shaft routed through a sealed duct in the engine oil pan. A multi-plate clutch with a locking force of 37 lb.-ft. modulated torque distribution to all four wheels as needed, ensuring optimal traction in various driving scenarios.
CLS 63 AMG S-Model: Limited-Slip Differential and Enhanced Dynamics
Taking performance a step further, the CLS 63 AMG S-Model came standard with a limited-slip differential integrated within the rear final drive. This advanced component further amplified traction, resulting in even greater vehicle dynamics and enhanced driving enjoyment, particularly on a racetrack or during spirited driving.
All 2014 CLS 63 AMG models were equipped with AMG Adaptive Sports Suspension, featuring an electronically controlled damping system. Drivers could easily switch between “Comfort,” “Sport,” and “Sport Plus” settings using a dedicated button in the AMG DRIVE UNIT, adjusting the suspension firmness to match their desired driving style and road conditions. The front wheels utilized a steel-spring suspension system, while the rear axle incorporated a load-leveling air suspension system, ensuring a balanced and comfortable ride.
The three-link front suspension was further refined on the S-Model and the CLS 63 AMG with all-wheel drive. Newly developed aluminum control arms enhanced grip, agility, and steering neutrality during high-speed cornering. The S-Model featured exclusive, more performance-oriented elastokinematics, providing the driver with even more neutral handling, improved feedback, and enhanced wheel grip at the limits of adhesion. A wider front track (increased by 0.9 inches or 2.4 cm) contributed to greater stability at higher cornering speeds and improved road feel. Increased negative camber on all wheels further optimized cornering performance.
AMG’s electromechanical speed-sensitive steering system complemented the chassis setup. A rack-and-pinion steering ratio of 14:1 ensured agile handling in curves, and the variable power assist adjusted based on the selected suspension mode, providing optimal steering feel and responsiveness.
The high-performance S-Model sported exclusive 10-spoke light-alloy wheels finished in matte titanium gray with a high-sheen rim flange, while the standard CLS 63 AMG featured triple five-spoke light-alloy wheels painted titanium gray with a high-sheen finish. Both models were equipped with 255/35 tires on 9 x 19-inch wheels at the front and 285/30 tires on 10 x 19 rear wheels.
Braking and High-Performance Options
The 2014 CLS 63 AMG models were equipped with a high-performance AMG braking system featuring 14.2-inch ventilated and perforated brake discs on both front and rear wheels. The front discs incorporated AMG’s compound disc technology, extensively tested in motorsport, to withstand extreme heat. The standard CLS 63 AMG featured brake calipers with a grey finish and white AMG lettering, employing six pistons at the front and four at the rear for rapid, fade-resistant braking and short stopping distances.
For the ultimate braking performance, an optional AMG ceramic composite brake system was exclusively available for the S-Model. These brakes were identifiable by even larger 15.8-inch brake discs with an “AMG Carbon Ceramic” logo on bronze metallic calipers. The exceptional hardness of ceramic brake discs provided superior resistance to extreme heat and ensured extended service life. This ceramic system was also approximately 40 percent lighter, reducing unsprung mass, which further enhanced handling, agility, and ride comfort.
S-Model Design Differentiation
The CLS 63 AMG S-Model was subtly distinguished by red brake calipers and an AMG logo on the trunk lid featuring a contrasting black “S”. The standard black premium nappa leather interior of the S-Model was 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 in black Premium leather featured Alcantara® grip areas and a flattened top and bottom. The front head restraints of the AMG sports seats in the S-Model showcased the AMG crest embossed directly into the premium leather. The AMG instrument cluster also displayed an “S AMG” logo on the speedometer and red accents on the dials. Illuminated AMG door sill panels with white backlighting completed the exclusive appointments of the S-Model.
Bang & Olufsen BeoSound AMG High-End Surround Sound System
An exceptional optional feature for all 2014 CLS 63 AMG models was the Bang & Olufsen BeoSound AMG high-end surround sound system. Developed in collaboration with renowned Danish audio specialist Bang & Olufsen, this system delivered an unparalleled audio experience. Capable of Dolby Digital 5.1 playback, the system boasted a 1,200-watt amplifier and 14 high-end speakers with neodymium drivers. An integrated digital sound processor (DSP) managed music signal distribution, offering selectable B&O sound menus within the COMAND system.
The “True Image™” mode allowed individual sound settings for the front, center, and rear, creating a realistic listening experience at the chosen position. The “Sound Mode” menu provided preset sound modes, allowing selection between a high-end “Reference” studio sound and immersive surround sound. “Reference” mode focused on faithful reproduction of the artist’s intended sound, while surround sound mode delivered a spacious audio experience. Particularly with live recordings or concertos, this system created a unique panoramic sound within the vehicle without compromising the natural sound of the recording. Illuminated 50-watt tweeters with acoustic lens technology in the mirror triangle and high-end speaker covers in silver chrome with Bang & Olufsen logos further distinguished this exceptional sound system.
Conclusion: The 2014 Mercedes CLS 63 AMG – A Performance Benchmark
The 2014 Mercedes CLS 63 AMG and CLS 63 AMG S-Model represented a significant leap forward in performance and luxury within the four-door coupe segment. With its potent AMG 5.5-liter V8 biturbo engine, available performance-oriented 4MATIC all-wheel drive, and meticulously engineered chassis and braking systems, the CLS 63 AMG delivered an exhilarating driving experience. The S-Model, with its further enhanced power, standard limited-slip differential, and exclusive design features, stood as the ultimate expression of performance within the CLS range. For enthusiasts seeking a blend of breathtaking power, sophisticated technology, and luxurious appointments, the 2014 Mercedes CLS 63 AMG remained a compelling and highly desirable choice.
