The Mercedes-Benz E-Class Coupe (C238) E 400 V6, produced from 2017 to 2018, represented a compelling blend of luxury, performance, and technology within the E-Class range. Positioned as a mid-to-high-end variant of the C238 generation, it offered a significant step up in power and refinement compared to the base models, while remaining more accessible than the full-performance AMG versions. This two-door coupe aimed to deliver a sophisticated grand touring experience, appealing to buyers seeking a stylish and capable vehicle for both daily driving and longer journeys.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Coupe (C238) |
| Type (Engine) | E 400 V6 (329 Hp) 9G-TRONIC |
| Start of production | 2017 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban (EPA) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 9 l/100 km (26.1 US mpg, 31.4 UK mpg, 11.1 km/l) |
| Fuel consumption (economy) – combined (EPA) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 210 km/h (130.49 mph), Electronically limited |
| Power | 329 Hp @ 5260-6000 rpm |
| Power per litre | 109.8 Hp/l |
| Torque | 480 Nm @ 1600-4000 rpm (354.03 lb.-ft. @ 1600-4000 rpm) |
| Maximum engine speed | 6300 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 |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 82.1 mm (3.23 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 12 l (12.68 US qt | 10.56 UK qt) |
| Trunk (boot) space – minimum | 425 l (15.01 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 4826 mm (190 in.) |
| Width | 1860 mm (73.23 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1431 mm (56.34 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Front track | 1605 mm (63.19 in.) |
| Rear (Back) track | 1609 mm (63.35 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1112 mm (43.78 in.) |
| Minimum turning circle (turning diameter) | 11.37 m (37.3 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs, 360 mm |
| Rear brakes | Ventilated discs, 360 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/40 R18 |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
The heart of the E 400 V6 was the M276.823 3.0-liter V6 engine. This engine utilized direct injection and twin-turbocharging to deliver a substantial 329 horsepower and 354 lb-ft of torque. The twin-turbo setup, employing smaller turbochargers, provided excellent responsiveness and minimized turbo lag, contributing to a smooth and linear power delivery. The engine featured a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing breathing and efficiency. Paired with this engine was Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission. This transmission was designed for both fuel efficiency and smooth shifting, offering a wide range of gear ratios to keep the engine operating in its optimal power band. The 9G-TRONIC also featured paddle shifters for manual control, allowing drivers to engage more directly with the gear selection.
Driving Characteristics
The E 400 V6 offered a noticeably more engaging driving experience than the base E-Class Coupe models. The increased power and torque allowed for brisk acceleration, with a 0-60 mph time of around 5.5 seconds. The 9G-TRONIC transmission contributed to a refined and comfortable ride, with seamless gear changes. While not a dedicated sports car, the E 400 V6 provided ample power for overtaking and highway cruising. Compared to the E 300, the V6 offered a more effortless feel, particularly at higher speeds. The rear-wheel-drive configuration provided a balanced handling characteristic, although it lacked the all-weather capability of the 4MATIC all-wheel-drive system available on other E-Class models.
Equipment & Trim Levels
The E 400 V6 typically came well-equipped with standard features such as leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of safety technologies including automatic emergency braking, lane-keeping assist, and blind-spot monitoring. Optional extras included a panoramic sunroof, advanced driver-assistance systems, and various interior trim options. The interior design emphasized luxury and sophistication, with high-quality materials and a modern aesthetic. Dashboard configuration featured a dual 12.3-inch display screen, combining the instrument cluster and infotainment system into a single, integrated unit.
Chassis & Braking
The C238 E-Class Coupe utilized a sophisticated chassis design, featuring a multi-link suspension at both the front and rear. This suspension setup provided a comfortable ride while maintaining good handling characteristics. Optional air suspension was available, further enhancing ride quality and allowing for adjustable ride height. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The E 400 V6 typically featured larger brake rotors compared to the base models, contributing to improved braking performance. ABS (Anti-lock Braking System) was standard, ensuring optimal braking control in various conditions.
Market Reception & Comparison
The E 400 V6 was generally well-received by automotive critics, who praised its powerful engine, refined transmission, and luxurious interior. It was often seen as a sweet spot in the E-Class Coupe lineup, offering a compelling balance of performance and comfort. Fuel economy, while not exceptional, was reasonable for a vehicle of its size and performance, averaging around 22 mpg combined. Compared to the E 300, the V6 offered a significant performance upgrade, while remaining more affordable than the high-performance AMG variants. Reliability reports have been generally positive, with the M276 engine proving to be a robust and durable unit.
Legacy
The E 400 V6, while a relatively short-lived variant, has established a reputation as a desirable and well-rounded grand tourer. On the used car market, these models tend to hold their value well, particularly those with low mileage and a comprehensive service history. The M276 engine is known for its longevity, but regular maintenance, including oil changes and timing chain inspections, is crucial to ensure continued reliability. The combination of luxury, performance, and technology makes the C238 E 400 V6 a compelling option for buyers seeking a sophisticated and capable coupe.
