The Mercedes-Benz S-Class Coupe (C217) S 400 4MATIC G-TRONIC, produced from 2015 to 2017, represented a compelling blend of luxury, performance, and technology within the broader S-Class Coupe range. Positioned as a mid-range offering, it slotted between the entry-level S 350 and the higher-performance S 500 and S 63 AMG models. This variant aimed to provide a sophisticated grand touring experience with a focus on all-weather capability thanks to its 4MATIC all-wheel-drive system. The C217 generation itself was the two-door coupe derivative of the W222 S-Class sedan, offering a more dynamic and driver-focused alternative to its four-door sibling.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-Class |
| Generation | S-Class Coupe (C217) |
| Type | S 400 (367 Hp) 4MATIC G-TRONIC |
| Start of production | 2015 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 11.7-11.4 l/100 km (20.1 – 20.6 US mpg, 24.1 – 24.8 UK mpg, 8.5 – 8.8 km/l) |
| Fuel consumption (extra urban) | 7.2-6.6 l/100 km (32.7 – 35.6 US mpg, 39.2 – 42.8 UK mpg, 13.9 – 15.2 km/l) |
| Fuel consumption (combined) | 8.9-8.3 l/100 km (26.4 – 28.3 US mpg, 31.7 – 34 UK mpg, 11.2 – 12 km/l) |
| CO2 emissions | 208-193 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.6 sec |
| Acceleration 0 – 62 mph | 5.6 sec |
| Acceleration 0 – 60 mph | 5.3 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.3 kg/Hp, 187.2 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 255.1 Nm/tonne |
| Power | 367 Hp @ 5500-6000 rpm |
| Power per litre | 122.5 Hp/l |
| Torque | 500 Nm @ 1800-4500 rpm (368.78 lb.-ft. @ 1800-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.824 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 12.3 l (13 US qt | 10.82 UK qt) |
| Kerb Weight | 1960 kg (4321.06 lbs.) |
| Max. weight | 2540 kg (5599.74 lbs.) |
| Max load | 580 kg (1278.68 lbs.) |
| Trunk (boot) space (minimum) | 400 l (14.13 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 5027 mm (197.91 in.) |
| Width | 1899 mm (74.76 in.) |
| Width including mirrors | 2108 mm (82.99 in.) |
| Height | 1411 mm (55.55 in.) |
| Wheelbase | 2945 mm (115.94 in.) |
| Front track | 1625 mm (63.98 in.) |
| Rear track | 1649 mm (64.92 in.) |
| Front overhang | 954 mm (37.56 in.) |
| Rear overhang | 1128 mm (44.41 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle | 11.60 m (38.06 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/50 R18 |
| Wheel rims size | 18 |
INTRODUCTION
The S 400 4MATIC G-TRONIC, launched in 2015, was a key component of the C217 S-Class Coupe lineup. Built on the same platform (1HX0) as the W222 S-Class sedan, it offered a more sporting and exclusive experience. Mercedes-Benz aimed to capture buyers who desired the prestige and luxury of the S-Class but preferred the sleeker profile and more engaging driving dynamics of a coupe. The 4MATIC all-wheel-drive system was a significant selling point, particularly in regions with inclement weather, providing enhanced traction and stability.
Powertrain & Engine Architecture
At the heart of the S 400 4MATIC lay the M276.824 3.0-liter V6 engine. This engine featured direct injection and twin turbochargers, delivering a potent 367 horsepower and 500 Nm (368 lb-ft) of torque. The engine’s architecture was designed for efficiency and refinement, utilizing features like a spray-guided direct fuel injection system and a high compression ratio of 10.5:1. The ‘G-TRONIC’ transmission was Mercedes-Benz’s designation for its 7G-TRONIC PLUS 7-speed automatic gearbox. This transmission was known for its smooth and responsive shifts, contributing to both performance and fuel economy. The 4MATIC system employed a multi-plate clutch to distribute torque between the front and rear axles, dynamically adjusting based on driving conditions.
Driving Characteristics
The S 400 4MATIC offered a refined and comfortable driving experience. While not as overtly sporty as the S 500 or S 63 AMG, it provided ample power for effortless cruising and confident overtaking. The 0-60 mph acceleration time of around 5.3 seconds was respectable for a large luxury coupe. The 7G-TRONIC transmission was well-matched to the engine, providing smooth gear changes and a wide range of ratios. Compared to the manual transmission options available on some other S-Class models, the automatic prioritized comfort and ease of use. The 4MATIC system provided excellent grip in all conditions, enhancing stability and confidence, especially on wet or slippery roads. The steering was precise and well-weighted, though it lacked some of the directness found in more performance-oriented coupes.
Equipment & Trim Levels
The S 400 4MATIC came standard with a comprehensive array of luxury features. Interior appointments typically included high-quality leather upholstery, wood trim, and brushed aluminum accents. Standard equipment included features like a premium sound system, a large infotainment display, navigation, heated and ventilated front seats, and a panoramic sunroof. Optional extras included features like massaging seats, a rear-seat entertainment system, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. The interior design emphasized elegance and sophistication, with a focus on creating a comfortable and relaxing environment for both driver and passengers.
Chassis & Braking
The C217 S-Class Coupe featured an independent multi-link suspension at both the front and rear, providing a comfortable ride and precise handling. The suspension was tuned to prioritize comfort, but also offered good body control. The S 400 4MATIC was equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard features, enhancing safety and control. The chassis was designed to be rigid and lightweight, contributing to both handling and fuel efficiency.
Market Reception & Comparison
The S 400 4MATIC was generally well-received by automotive critics. It was praised for its luxurious interior, comfortable ride, and strong performance. The 4MATIC all-wheel-drive system was seen as a valuable asset, particularly in regions with harsh winters. Compared to the S 350, the S 400 offered a significant power upgrade, while remaining more affordable than the S 500. Fuel economy was respectable for a vehicle of its size and performance, averaging around 26-28 mpg combined. Reliability was generally good, though some owners reported minor issues with the infotainment system and electronic components.
Legacy
The S 400 4MATIC G-TRONIC has proven to be a relatively reliable and durable vehicle. The M276 engine is known for its longevity, and the 7G-TRONIC transmission is generally robust. On the used car market, these models hold their value reasonably well, reflecting the prestige of the S-Class brand and the desirability of the coupe body style. While newer S-Class models offer even more advanced technology and performance, the C217 S 400 4MATIC remains a compelling option for buyers seeking a luxurious and capable grand touring coupe.
