The Mercedes-Benz C 400 4MATIC Coupe (C205, post-facelift) represents a compelling blend of performance and luxury within the C-Class range. Introduced for the 2018 model year and continuing through 2021, this variant occupied a significant position as a mid-to-high-performance offering, bridging the gap between the base C300 models and the more focused AMG C 43 and C 63. It was part of the W205 C-Class generation, specifically the two-door coupe (C205) body style, which received a substantial facelift in 2018 bringing updated styling, technology, and powertrain refinements.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class Coupe (C205, facelift 2018) |
| Type (Engine) | C 400 V6 (333 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2018 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption at Low speed (WLTP) | 8.3 l/100 km (28.3 US mpg, 34 UK mpg, 12 km/l) |
| Fuel consumption at very high speed (WLTP) | 9.1 l/100 km (25.8 US mpg, 31 UK mpg, 11 km/l) |
| CO2 emissions (WLTP) | 187-206 g/km |
| Fuel consumption (economy) – urban | 10.8-11.2 l/100 km (21.8 – 21 US mpg, 26.2 – 25.2 UK mpg, 9.3 – 8.9 km/l) |
| Fuel consumption (economy) – extra urban | 5.9-6.3 l/100 km (39.9 – 37.3 US mpg, 47.9 – 44.8 UK mpg, 16.9 – 15.9 km/l) |
| Fuel consumption (economy) – combined | 7.7-8.1 l/100 km (30.5 – 29 US mpg, 36.7 – 34.9 UK mpg, 13 – 12.3 km/l) |
| CO2 emissions | 176-186 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.9 sec |
| Acceleration 0 – 62 mph | 4.9 sec |
| Acceleration 0 – 60 mph | 4.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4.9 kg/Hp, 202.4 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 291.8 Nm/tonne |
| Power | 333 Hp |
| Power per litre | 111.1 Hp/l |
| Torque | 480 Nm @ 1600-4000 rpm (354.03 lb.-ft. @ 1600-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.823 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| 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 | 10.9 l (11.52 US qt | 9.59 UK qt) |
| Kerb Weight | 1645 kg (3626.6 lbs.) |
| Max. weight | 2215 kg (4883.24 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4686 mm (184.49 in.) |
| Width | 1810 mm (71.26 in.) |
| Height | 1405 mm (55.31 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1567 mm (61.69 in.) |
| Front overhang | 790 mm (31.1 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Ride height (ground clearance) | 88 mm (3.46 in.) |
| Approach angle | 13.2° |
| Departure angle | 14.3° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
INTRODUCTION
The C 400 4MATIC Coupe, launched after the 2018 facelift, was a key component of Mercedes-Benz’s strategy to offer a diverse range of C-Class models. It slotted into the lineup above the C300, providing a significant power upgrade without venturing into the territory of the full-fledged AMG models. The C205 platform, based on the MRA (Modular Rear-wheel-drive Architecture) platform, allowed for a relatively lightweight yet rigid chassis, contributing to the car’s dynamic capabilities. The facelift brought a more aggressive front fascia, updated interior technology, and refinements to the engine and transmission.
Powertrain & Engine Architecture
At the heart of the C 400 Coupe lies the M276.823 3.0-liter V6 engine. This engine is a direct-injection, twin-turbocharged powerplant, producing 333 horsepower and 480 Nm (354 lb-ft) of torque. The twin-turbo configuration utilizes a single scroll turbocharger for each bank of cylinders, minimizing turbo lag and providing a broad torque curve. The engine features a four-valve-per-cylinder design and a relatively high compression ratio, optimized for both performance and efficiency. The 9G-TRONIC nine-speed automatic transmission is standard, offering smooth and quick shifts. This transmission is known for its wide gear ratio spread, contributing to both fuel economy and acceleration. The 4MATIC all-wheel-drive system provides enhanced traction and stability, particularly in adverse weather conditions. It operates with a rear-wheel bias, maintaining a sporty driving feel.
Driving Characteristics
The C 400 4MATIC Coupe delivers a refined yet engaging driving experience. The 333 hp and 480 Nm of torque provide ample power for confident acceleration and effortless highway cruising. The 0-60 mph sprint takes approximately 4.7 seconds, making it a genuinely quick coupe. The 9G-TRONIC transmission is well-tuned, providing seamless gear changes and contributing to a smooth ride. Compared to the C300, the C 400 offers a noticeable increase in performance, particularly in mid-range acceleration. While not as aggressively tuned as the AMG C 43, the C 400 provides a satisfying level of performance for everyday driving and spirited weekend excursions. The 4MATIC system inspires confidence in all weather conditions, providing excellent grip and stability.
Equipment & Trim Levels
The C 400 4MATIC Coupe came well-equipped as standard. Typical features included leather upholstery, heated front seats, a premium sound system, dual-zone automatic climate control, and a power-adjustable steering column. The infotainment system featured a central display screen controlled by a rotary dial and touchpad. Optional extras included a panoramic sunroof, advanced driver-assistance systems (such as adaptive cruise control and lane-keeping assist), and upgraded interior trim options. The interior design was characterized by a blend of luxury and sportiness, with high-quality materials and a driver-focused layout.
Chassis & Braking
The C 400 Coupe benefits from the C-Class’s well-engineered chassis. It features a four-wheel independent suspension system, with a multi-link setup at the rear. The suspension is tuned to provide a balance between comfort and handling. The steering is precise and responsive, offering good feedback to the driver. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and Electronic Stability Program (ESP) are standard safety features.
Market Reception & Comparison
The C 400 4MATIC Coupe was generally well-received by automotive critics. It was praised for its strong performance, comfortable ride, and luxurious interior. Compared to the C300, the C 400 offered a significant performance upgrade, justifying its higher price tag for those seeking more power. However, some critics noted that it didn’t quite match the outright performance of the AMG C 43. Fuel economy was considered reasonable for a performance coupe, with combined figures in the range of 7.7-8.1 l/100 km. Reliability reports have been generally positive, with no major recurring issues reported.
Legacy
The C 400 4MATIC Coupe represents a sweet spot in the C-Class lineup for many enthusiasts. The M276 V6 engine is known for its durability and relatively straightforward maintenance. On the used car market, these models offer a compelling value proposition, providing a blend of performance, luxury, and technology at a more accessible price point than newer C-Class models or the higher-performance AMG variants. While the C 400 was replaced by the C 43 in subsequent model years, it remains a desirable and well-regarded coupe for those seeking a refined and capable grand tourer.
