The Mercedes-Benz E 350d 4MATIC Coupe (C238) represents a compelling blend of luxury, performance, and efficiency within the fifth generation of the E-Class Coupe. Produced from June 2017 to May 2018, this variant occupied a significant position in the E-Class lineup, offering a diesel-powered alternative to the gasoline engines. It was positioned as a mid-to-high range offering, appealing to buyers seeking strong torque, refined cruising, and the added security of all-wheel drive. The C238 generation, introduced in 2017, marked a significant departure from its predecessor, adopting a more fluid and contemporary design language while incorporating advanced technology and driver-assistance systems.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class Coupe (C238) |
| Type | E 350d (258 Hp) 4MATIC 9G-TRONIC |
| Start of production | June, 2017 |
| End of production | May, 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 7.8 l/100 km (30.2 US mpg, 36.2 UK mpg, 12.8 km/l) |
| Fuel consumption (extra urban) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| Fuel consumption (combined) | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| CO2 emissions | 165 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6 sec |
| Acceleration 0 – 62 mph | 6 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7 kg/Hp, 142.1 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 341.6 Nm/tonne |
| Power | 258 Hp @ 3400 rpm |
| Torque | 620 Nm @ 1600-2400 rpm (457.29 lb.-ft. @ 1600-2400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.873 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1815 kg (4001.39 lbs.) |
| Max. weight | 2425 kg (5346.21 lbs.) |
| Max load | 610 kg (1344.82 lbs.) |
| Trunk (boot) space – minimum | 425 l (15.01 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4826 mm (190 in.) |
| Width | 1860 mm (73.23 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1430 mm (56.3 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Front track | 1598 mm (62.91 in.) |
| Rear (Back) track | 1604 mm (63.15 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1112 mm (43.78 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.61 m (38.09 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 | 245/45 R18 |
| Wheel rims size | 18 |
INTRODUCTION
The E 350d 4MATIC Coupe, launched in 2017, was a key component of the C238 E-Class Coupe range. Built on the W213 E-Class platform, the C238 offered a more sporting and stylish alternative to the sedan. The “d” designation signified a diesel engine, and the 350 indicated a higher power output within the diesel lineup. The 4MATIC system provided all-wheel drive capability, enhancing traction and stability, particularly in adverse weather conditions. The 9G-TRONIC automatic transmission, a nine-speed unit, was standard, contributing to both fuel efficiency and smooth gear changes. This model aimed to deliver a luxurious grand touring experience with a focus on long-distance comfort and strong performance.
Powertrain & Engine Architecture
At the heart of the E 350d 4MATIC Coupe lies the OM 642.873 3.0-liter V6 turbocharged diesel engine. This engine is a sophisticated design featuring a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The engine boasts four valves per cylinder and a relatively high compression ratio of 15.5:1, contributing to its efficiency and power output. A variable geometry turbocharger with an intercooler further enhances performance by providing increased air intake. The 9G-TRONIC automatic transmission is a crucial element of the powertrain. With nine forward gears, it allows the engine to operate within its optimal efficiency range more frequently, resulting in improved fuel economy and reduced emissions. The transmission features a torque converter and a wide gear ratio spread, providing both responsive acceleration and relaxed cruising.
Driving Characteristics
The E 350d 4MATIC Coupe delivers a refined and effortless driving experience. The 620 Nm (457 lb-ft) of torque, available from a low 1600 rpm, provides strong acceleration in virtually any gear. While not as overtly sporty as some of its gasoline-powered siblings, the E 350d offers ample power for confident overtaking and highway cruising. The 9G-TRONIC transmission shifts smoothly and almost imperceptibly, contributing to a relaxed driving experience. The 4MATIC all-wheel-drive system provides excellent traction, particularly on slippery surfaces, enhancing stability and confidence. Compared to the E 200d, the E 350d offers a significant performance upgrade, while remaining more fuel-efficient than the higher-output gasoline variants like the E 400. The gear ratios are tuned for a balance between acceleration and fuel economy, with taller gears for efficient cruising and shorter gears for responsive acceleration.
Equipment & Trim Levels
The E 350d 4MATIC Coupe came well-equipped as standard, reflecting its position as a mid-to-high range model. Standard features typically included leather upholstery, automatic climate control, a high-resolution infotainment system with navigation, and a suite of driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included a premium sound system, panoramic sunroof, ventilated and massaging front seats, and a head-up display. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The dashboard layout was modern and elegant, with a focus on intuitive controls and a high-quality feel.
Chassis & Braking
The C238 E-Class Coupe features a sophisticated chassis design with an independent multi-link suspension at both the front and rear. This suspension setup provides a comfortable ride while maintaining good handling characteristics. The 4MATIC all-wheel-drive system distributes power between the front and rear axles as needed, optimizing traction and stability. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The E 350d 4MATIC Coupe typically featured larger brake rotors compared to lower-spec models. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard features, enhancing safety and control.
Market Reception & Comparison
The E 350d 4MATIC Coupe was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and luxurious interior. The combination of strong performance and good fuel economy was also a significant selling point. Compared to the E 200d, the E 350d offered a noticeable performance improvement, making it a more appealing option for drivers who frequently undertake long journeys or require more power for overtaking. Against gasoline-powered E-Class Coupes, the E 350d offered a compelling alternative for those prioritizing fuel efficiency and torque. However, some critics noted that the diesel engine lacked the responsiveness and sound of the gasoline engines.
Legacy
The OM 642 engine family, including the OM 642.873 found in the E 350d, has a reputation for durability and reliability. With proper maintenance, these engines can accumulate high mileage without major issues. The 9G-TRONIC transmission has also proven to be a reliable unit. In the used car market, the E 350d 4MATIC Coupe remains a desirable option for buyers seeking a luxurious and capable grand tourer. Its combination of performance, efficiency, and all-wheel-drive capability continues to appeal to a wide range of drivers. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the vehicle has primarily been used for short journeys.
