The Mercedes-Benz C-Class T-modell (S205), specifically the C 400 V6 4MATIC variant with the 9G-TRONIC automatic transmission, was produced from 2018 to 2021 as part of the S205 facelift generation. This model represents a high-performance offering within the C-Class estate (wagon) lineup, positioned above the C 300 models and below the more potent AMG variants. It aimed to deliver a blend of practicality, luxury, and spirited driving dynamics to buyers seeking a versatile premium vehicle. The C 400 V6 4MATIC served as a compelling alternative to similarly priced sports sedans and SUVs, offering the added benefit of a spacious cargo area.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S205, 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 | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 8.4 l/100 km (28 US mpg, 33.6 UK mpg, 11.9 km/l) |
| Fuel consumption at very high speed (WLTP) | 9.2 l/100 km (25.6 US mpg, 30.7 UK mpg, 10.9 km/l) |
| CO2 emissions (WLTP) | 190-210 g/km |
| Fuel consumption (economy) – urban | 10.8-11.3 l/100 km (21.8 – 20.8 US mpg, 26.2 – 25 UK mpg, 9.3 – 8.8 km/l) |
| Fuel consumption (economy) – extra urban | 6.1-6.5 l/100 km (38.6 – 36.2 US mpg, 46.3 – 43.5 UK mpg, 16.4 – 15.4 km/l) |
| Fuel consumption (economy) – combined | 7.9-8.3 l/100 km (29.8 – 28.3 US mpg, 35.8 – 34 UK mpg, 12.7 – 12 km/l) |
| CO2 emissions | 179-189 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5 sec |
| Acceleration 0 – 62 mph | 5 sec |
| Acceleration 0 – 60 mph | 4.8 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 | 2310 kg (5092.68 lbs.) |
| Max load | 665 kg (1466.07 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 | 4702 mm (185.12 in.) |
| Width | 1810 mm (71.26 in.) |
| Height | 1457 mm (57.36 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1584 mm (62.36 in.) |
| Front overhang | 790 mm (31.1 in.) |
| Rear overhang | 1072 mm (42.2 in.) |
| Ride height (ground clearance) | 92 mm (3.62 in.) |
| Approach angle | 13.6° |
| Departure angle | 13.8° |
| 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 |
Powertrain & Engine Architecture
The C 400 V6 4MATIC is powered by the M276.823 engine, a 3.0-liter V6 engine employing direct injection and twin-turbocharging. This engine is a member of Mercedes-Benz’s modular engine family, known for its smooth operation and strong performance. The engine produces 333 horsepower and 480 Nm (354 lb-ft) of torque, available from 1600 to 4000 rpm. The 9G-TRONIC automatic transmission, a nine-speed unit, is crucial to delivering power efficiently. This transmission features a wide gear ratio spread, contributing to both fuel economy and responsive acceleration. The 4MATIC all-wheel-drive system provides enhanced traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The C 400 V6 4MATIC offers a noticeably more engaging driving experience than the base C 300 models. The twin-turbo V6 provides ample power for confident overtaking and effortless cruising. The 9G-TRONIC transmission shifts smoothly and quickly, although some drivers may find it occasionally hesitant in lower gears. The all-wheel-drive system inspires confidence, providing excellent grip in various conditions. While not as overtly sporty as the AMG C 43 or C 63 models, the C 400 strikes a good balance between comfort and performance. The steering is precise, and the suspension provides a comfortable ride without feeling overly soft.
Equipment & Trim Levels
The C 400 V6 4MATIC typically came well-equipped as standard. Common features included leather upholstery, heated front seats, a premium sound system, a large infotainment display with navigation, and a suite of driver-assistance systems such as automatic emergency braking and lane-keeping assist. Optional extras included a panoramic sunroof, upgraded leather, advanced driver-assistance packages, and various cosmetic enhancements. Interior trim options ranged from aluminum to wood veneers, allowing buyers to personalize the cabin to their preferences.
Chassis & Braking
The S205 C-Class estate features a multi-link independent suspension at all four corners, providing a comfortable and controlled ride. The C 400 V6 4MATIC typically came equipped with larger brakes than the base models, featuring ventilated discs on all wheels. The braking system is responsive and provides ample stopping power. The steering system is a rack-and-pinion setup with electric power assistance, offering precise and predictable handling. Stabilizer bars are fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The C 400 V6 4MATIC was generally well-received by automotive critics. It was praised for its powerful engine, comfortable ride, and spacious interior. Compared to the C 300, the C 400 offered a significant performance upgrade. However, it was also more expensive and slightly less fuel-efficient. Against competitors like the BMW 5 Series Touring and Audi A6 Avant, the C 400 V6 4MATIC held its own, offering a compelling combination of luxury, performance, and practicality. Fuel economy figures were respectable for a vehicle of this class, averaging around 29.8-28.3 US mpg in combined driving.
Legacy
The M276 engine family, including the M276.823 found in the C 400, has proven to be relatively reliable, although preventative maintenance is crucial. Common issues include potential oil leaks and occasional problems with the turbochargers. The 9G-TRONIC transmission is generally robust, but some owners have reported occasional software glitches. Today, the C 400 V6 4MATIC represents a good value on the used car market, offering a luxurious and capable estate car at a reasonable price. Its blend of performance, practicality, and features continues to appeal to buyers seeking a premium wagon.
