The Mercedes-Benz C 400 4MATIC Coupe (C205) was a performance-oriented variant of the C-Class Coupe, produced between 2016 and 2018. Positioned as a mid-to-high-range offering within the C205 coupe lineup, it bridged the gap between the more economical base models and the full-fledged AMG variants. This model aimed to deliver a blend of luxury, performance, and all-weather capability through its potent engine, sophisticated transmission, and standard all-wheel-drive system. It was primarily marketed towards buyers seeking a sporty grand tourer with a premium badge.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Coupe (C205) |
| Type | C 400 (333 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 10.9-10.6 l/100 km (21.6 – 22.2 US mpg) |
| Fuel consumption (extra urban) | 6.2-5.8 l/100 km (37.9 – 40.6 US mpg) |
| Fuel consumption (combined) | 8.0-7.6 l/100 km (29.4 – 30.9 US mpg) |
| CO2 emissions | 181-172 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 | 4.8 kg/Hp |
| Weight-to-torque ratio | 3.3 kg/Nm |
| Power | 333 Hp @ 5250-6000 rpm |
| Torque | 480 Nm @ 1600-4000 rpm (354.03 lb.-ft.) |
| 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 |
| Compression ratio | 10.5:1 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant capacity | 10.9 l (11.52 US qt | 9.59 UK qt) |
| Kerb Weight | 1600 kg (3527.4 lbs) |
| Max. weight | 2155 kg (4750.96 lbs) |
| Max load | 555 kg (1223.57 lbs) |
| Trunk (boot) space (minimum) | 400 l (14.13 cu. ft) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Max. roof load | 75 kg (165.35 lbs) |
| Permitted trailer load (with brakes) | 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) |
| Width including mirrors | 2016 mm (79.37 in) |
| Height | 1405 mm (55.31 in) |
| Wheelbase | 2840 mm (111.81 in) |
| Front track | 1563 mm (61.54 in) |
| Rear track | 1546 mm (60.87 in) |
| Front overhang | 790 mm (31.1 in) |
| Rear overhang | 1056 mm (41.57 in) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.45 m (37.57 ft) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 17 |
INTRODUCTION
The C 400 4MATIC Coupe, introduced in 2016 as part of the C205 generation, represented a significant step up in performance from the base C300 models. Built on the rear-wheel-drive biased MRA (Modular Rear-wheel-drive Architecture) platform shared with the W205 C-Class sedan and other Mercedes-Benz models, the C205 coupe prioritized style and a more engaging driving experience. The C 400 specifically aimed to deliver a compelling alternative to competitors like the BMW 4 Series and Audi A5 Coupe, offering a blend of luxury, technology, and respectable power. Production continued through 2018, after which it was superseded by revised models within the C-Class range.
Powertrain & Engine Architecture
At the heart of the C 400 4MATIC Coupe lies the M276.823 engine, a 3.0-liter V6 engine employing direct injection and twin-turbocharging. This engine, a cornerstone of Mercedes-Benz’s powertrain lineup during this period, produces 333 horsepower at 5250-6000 rpm and 480 Nm (354 lb-ft) of torque between 1600-4000 rpm. The twin-turbo setup utilizes a single scroll turbine design for quicker response and reduced turbo lag. The engine features a compression ratio of 10.5:1 and is longitudinally mounted within the engine bay. The engine is paired with Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission. This transmission is known for its smooth shifts and wide gear ratio spread, contributing to both fuel efficiency and performance. The 9G-TRONIC features a torque converter lockup clutch for improved efficiency at cruising speeds. The 4MATIC all-wheel-drive system operates with a rear-wheel bias, sending power to all four wheels as needed for optimal traction.
Driving Characteristics
The C 400 4MATIC Coupe delivers a noticeably more spirited driving experience than its lower-powered siblings. The 333 hp engine provides 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 contributes to smooth and responsive gear changes, although some drivers may find it occasionally hesitant in certain driving situations. The all-wheel-drive system provides excellent grip and stability, particularly in adverse weather conditions. The steering is precise and well-weighted, offering a good level of feedback. 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, making it a suitable choice for both daily commuting and weekend drives.
Equipment & Trim Levels
The C 400 4MATIC Coupe came standard with a generous array of features, reflecting its position as a mid-to-high-range model. Standard equipment typically included leather upholstery, heated front seats, a premium audio system, dual-zone automatic climate control, and a power-adjustable steering column. Mercedes-Benz’s COMAND infotainment system with a central display screen was also standard, offering navigation, Bluetooth connectivity, and smartphone integration. 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 modern aesthetics, with high-quality materials and a well-crafted dashboard layout.
Chassis & Braking
The C 205 C 400 Coupe utilizes an independent multi-link suspension system at both the front and rear axles. This suspension setup provides a comfortable ride while maintaining good handling characteristics. The suspension is tuned to offer a balance between sportiness and comfort, providing a relatively compliant ride over uneven surfaces. The C 400 Coupe is equipped with ventilated disc brakes at the front and solid disc brakes at the rear. The braking system is assisted by ABS (Anti-lock Braking System) and electronic brake-force distribution. The standard tire size is 225/50 R17, although larger wheel and tire options were available as optional extras.
Market Reception & Comparison
The C 400 4MATIC Coupe was generally well-received by automotive critics. Reviewers praised its powerful engine, smooth transmission, and comfortable ride. The all-wheel-drive system was also highlighted as a significant advantage, particularly in regions with inclement weather. Compared to the base C300 models, the C 400 offered a substantial performance upgrade. However, it was often seen as a stepping stone to the more focused AMG variants. Fuel economy was respectable for a performance coupe, averaging around 29.4-30.9 US mpg in combined driving. Reliability reports suggest that the M276 engine is generally reliable, although preventative maintenance is crucial.
Legacy
The C 400 4MATIC Coupe represents a compelling blend of luxury, performance, and technology from Mercedes-Benz. While it has been superseded by newer models, it remains a desirable option in the used car market. The M276 engine, known for its robust construction and smooth power delivery, continues to be well-regarded. The 9G-TRONIC transmission, while occasionally exhibiting minor quirks, is generally considered a reliable and efficient unit. The C 400 Coupe offers a refined and engaging driving experience, making it a suitable choice for buyers seeking a stylish and capable grand tourer.
