The Mercedes-Benz S-Class Coupe (C217) facelift S 450 4MATIC G-TRONIC, produced from 2017 to 2020, represents a compelling blend of luxury, performance, and technology within the flagship coupe range. Positioned as a mid-range offering in the C217 lineup – sitting between the S 560 and the AMG variants – the S 450 aimed to deliver a refined grand touring experience with a focus on comfort and sophisticated power. This model benefited from the 2017 facelift, which brought updated styling, enhanced technology, and improvements to the powertrain. It was primarily marketed towards buyers seeking a luxurious and capable coupe without the outright performance focus of the AMG models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-Class |
| Generation | S-Class Coupe (C217, facelift 2017) |
| Type (Engine) | S 450 (367 Hp) 4MATIC G-TRONIC |
| Start of production | 2017 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption at Low speed (WLTP) | 10 l/100 km (23.5 US mpg, 28.2 UK mpg, 10 km/l) |
| Fuel consumption at very high speed (WLTP) | 10.6 l/100 km (22.2 US mpg, 26.6 UK mpg, 9.4 km/l) |
| CO2 emissions (WLTP) | 228-240 g/km |
| Fuel consumption (economy) – urban | 12.3-12.6 l/100 km (19.1 – 18.7 US mpg, 23 – 22.4 UK mpg, 8.1 – 7.9 km/l) |
| Fuel consumption (economy) – extra urban | 7.0-7.2 l/100 km (33.6 – 32.7 US mpg, 40.4 – 39.2 UK mpg, 14.3 – 13.9 km/l) |
| Fuel consumption (economy) – combined | 8.9-9.2 l/100 km (26.4 – 25.6 US mpg, 31.7 – 30.7 UK mpg, 11.2 – 10.9 km/l) |
| CO2 emissions | 204-208 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.4 kg/Hp, 185.8 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 253.2 Nm/tonne |
| Power | 367 Hp @ 5500-6000 rpm |
| Power per litre | 122.5 Hp/l |
| Torque | 500 Nm @ 1600-4000 rpm (368.78 lb.-ft. @ 1600-4000 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 | 13.2 l (13.95 US qt | 11.61 UK qt) |
| Kerb Weight | 1975 kg (4354.13 lbs.) |
| Max. weight | 2555 kg (5632.81 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 | 5032 mm (198.11 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 (Back) track | 1649 mm (64.92 in.) |
| Front overhang | 959 mm (37.76 in.) |
| Rear overhang | 1128 mm (44.41 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.60 m (38.06 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 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 |
Powertrain & Engine Architecture
The S 450 4MATIC utilizes Mercedes-Benz’s M276.824 3.0-liter V6 engine. This engine is a direct-injection, twin-turbocharged powerplant, producing 367 horsepower and 500 Nm (368 lb-ft) of torque. The twin-turbo configuration employs a ‘hot-side-inside’ layout, positioning the turbochargers within the V of the engine to improve responsiveness and reduce turbo lag. The engine features a high compression ratio of 10.5:1 and utilizes variable valve timing on both intake and exhaust sides. The G-TRONIC 9-speed automatic transmission is a key component, offering smooth and efficient gear changes. This transmission is known for its wide gear ratio spread, contributing to both fuel economy and performance. The 4MATIC all-wheel-drive system provides enhanced traction and stability, particularly in adverse weather conditions, distributing power between the front and rear axles as needed.
Driving Characteristics
The S 450 4MATIC delivers a refined and comfortable driving experience. While not as overtly sporty as the AMG variants, the 367 hp engine provides ample power for effortless cruising and confident overtaking. The 9-speed automatic transmission is well-tuned, offering seamless shifts and keeping the engine within its optimal power band. The all-wheel-drive system inspires confidence in various driving conditions. Compared to the S 560 with its larger V8, the S 450 feels slightly less potent, but the difference is often negligible in everyday driving. The gear ratios are optimized for both fuel efficiency and responsive acceleration. The suspension, typically featuring Mercedes’ AIRMATIC air suspension, provides a smooth and controlled ride, effectively isolating passengers from road imperfections.
Equipment & Trim Levels
The S 450 4MATIC came standard with a comprehensive array of luxury features. These included leather upholstery, heated and ventilated front seats with massage functions, a premium Burmester sound system, a large infotainment display with navigation, and a suite of advanced driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included a panoramic sunroof, upgraded leather packages, rear-seat entertainment systems, and various cosmetic enhancements. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The standard dashboard configuration featured dual 12.3-inch displays, seamlessly integrated to create a wide digital cockpit.
Chassis & Braking
The C217 S-Class Coupe features an independent multi-link suspension at both the front and rear axles. The AIRMATIC air suspension system, often standard or optional, further enhances ride comfort and allows for adjustable ride height. The S 450 4MATIC is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability program (ESP) and anti-lock braking system (ABS) are standard features, enhancing safety and control. Steering is rack-and-pinion with electric power assistance, offering precise and responsive handling. The chassis is designed to minimize noise, vibration, and harshness, contributing to the overall luxurious driving experience.
Market Reception & Comparison
The S 450 4MATIC was generally well-received by automotive critics. It was praised for its comfortable ride, refined engine, and luxurious interior. While some reviewers noted that it lacked the outright performance of the S 560 or AMG models, it was considered a compelling option for buyers prioritizing comfort and sophistication. Fuel economy was respectable for a vehicle of its size and class, although not exceptional. Compared to the S 560, the S 450 offered a lower price point, making it more accessible to a wider range of buyers. Reliability reports generally indicate good dependability, although maintenance costs can be significant due to the complexity of the vehicle’s systems.
Legacy
The S 450 4MATIC (C217) has established itself as a desirable used luxury coupe. The M276 engine, while complex, has proven to be relatively reliable with proper maintenance. The 9-speed G-TRONIC transmission is also generally considered durable. However, potential buyers should be aware of the potential for costly repairs related to the air suspension system and electronic components. Today, these vehicles offer a significant value proposition, providing a high level of luxury and technology at a more affordable price point than newer models. The C217 S-Class Coupe, and the S 450 variant in particular, remains a benchmark for grand touring coupes, representing a pinnacle of Mercedes-Benz engineering and design.
