The Mercedes-Benz E-Class Coupe (C207) facelift, specifically the E 350d V6 9G-TRONIC variant, represents a compelling blend of luxury, performance, and efficiency within the mid-size coupe segment. Produced from July 2014 to September 2015, this model occupied a significant position in the E-Class lineup, offering a diesel-powered alternative to the gasoline-fueled options. It was part of the broader C207 generation, which itself was based on the W204 sedan platform, but distinguished by its two-door coupe body style and more sporting aesthetic. This variant aimed to appeal to buyers seeking a refined grand tourer with strong torque and respectable fuel economy.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Coupe (C207, facelift 2013) |
| Type (Engine) | E 350d V6 (258 Hp) 9G-TRONIC |
| Start of production | July, 2014 |
| End of production | September, 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 6-6.4 l/100 km (39.2 – 36.8 US mpg) |
| Fuel consumption (extra urban) | 4.5-5 l/100 km (52.3 – 47 US mpg) |
| Fuel consumption (combined) | 5-5.4 l/100 km (47 – 43.6 US mpg) |
| CO2 emissions | 133-142 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.2 sec |
| Acceleration 0 – 62 mph | 6.2 sec |
| Acceleration 0 – 60 mph | 5.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.6 kg/Hp |
| Weight-to-torque ratio | 2.8 kg/Nm |
| 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 642.838 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 10.8 l (11.41 US qt | 9.5 UK qt) |
| Kerb Weight | 1710 kg (3769.9 lbs.) |
| Max. weight | 2235 kg (4927.33 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space (minimum) | 400 l (14.13 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| AdBlue tank | 26 l (6.87 US gal | 5.72 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (with brakes) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4703 mm (185.16 in.) |
| Width | 1786 mm (70.31 in.) |
| Width including mirrors | 2016 mm (79.37 in.) |
| Height | 1397 mm (55 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1538 mm (60.55 in.) |
| Rear track | 1541 mm (60.67 in.) |
| Front overhang | 862 mm (33.94 in.) |
| Rear overhang | 1081 mm (42.56 in.) |
| Minimum turning circle | 11.15 m (36.58 ft.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 9 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size (Front) | 235/45 R17; 235/40 R18; 235/35 R19 |
| Tires size (Rear) | 235/45 R17; 255/35 R18; 255/30 R19 |
Powertrain & Engine Architecture
The heart of the E 350d Coupe is the OM 642.838 3.0-liter V6 turbodiesel engine. This engine is a sophisticated design featuring a common-rail direct injection system, a variable geometry turbocharger, and an intercooler. The engine produces 258 horsepower at 3400 rpm and a substantial 620 Nm (457 lb-ft) of torque between 1600 and 2400 rpm. This broad torque curve is a hallmark of modern diesel engines and contributes significantly to the car’s effortless cruising ability. The engine utilizes a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The 9G-TRONIC nine-speed automatic transmission is a key component, offering smooth and efficient gear changes. This transmission’s wide gear ratio spread allows the engine to operate in its optimal efficiency range more frequently, contributing to improved fuel economy.
Driving Characteristics
The E 350d Coupe delivers a refined and comfortable driving experience. The abundant torque from the diesel engine provides strong acceleration, with a 0-60 mph time of around 5.9 seconds. While not a sports car, the E 350d feels surprisingly agile for its size. The 9G-TRONIC transmission contributes to this by providing quick and seamless shifts. Compared to the gasoline-powered E 350 Coupe, the diesel offers superior fuel economy and a more relaxed driving style. It lacks the high-revving excitement of the gasoline engine, but compensates with its effortless pulling power. The gear ratios in the 9G-TRONIC are tuned for both performance and efficiency, with lower gears providing brisk acceleration and higher gears optimizing fuel consumption during highway cruising.
Equipment & Trim Levels
The E 350d Coupe typically came well-equipped, reflecting its position as a premium offering. Standard features included leather upholstery, automatic climate control, a high-quality audio system, and a suite of safety features such as ABS, stability control, and multiple airbags. Optional extras included a panoramic sunroof, premium sound systems (like Harman Kardon), advanced driver-assistance systems (such as lane keeping assist and adaptive cruise control), and various interior trim options. The facelifted C207 models also benefited from updated infotainment systems and interior design elements.
Chassis & Braking
The E 350d Coupe features a sophisticated suspension system designed to balance comfort and handling. The front suspension utilizes coil springs and an independent multi-link setup with a transverse stabilizer bar. The rear suspension also employs an independent multi-link design with a stabilizer bar. This configuration provides a comfortable ride while minimizing body roll during cornering. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The car is equipped with ABS (Anti-lock Braking System) and electronic stability control to enhance safety.
Market Reception & Comparison
The E 350d Coupe was generally well-received by automotive critics. It was praised for its refined ride, powerful engine, and excellent fuel economy. Compared to other E-Class Coupe variants, the E 350d offered a compelling alternative for buyers prioritizing efficiency and torque over outright performance. The gasoline-powered E 350 offered more horsepower, but at the expense of fuel economy. The E 250, a smaller-engined variant, provided a more affordable entry point but lacked the E 350d’s effortless power. Reliability reports suggest the OM 642 engine is generally robust, although diesel particulate filter (DPF) issues can occur with infrequent long-distance driving.
Legacy
The Mercedes-Benz E 350d Coupe (C207) remains a desirable used car today. The OM 642 engine is known for its durability, and the 9G-TRONIC transmission has proven to be reliable. However, potential buyers should be aware of the potential for DPF issues and the cost of maintaining a complex diesel engine. The car’s blend of luxury, performance, and efficiency continues to appeal to buyers seeking a refined and capable grand tourer. Its relatively short production run as a facelifted model adds to its collectibility, making it a sought-after example within the C207 E-Class Coupe range.
