The Mercedes-Benz E 350 BlueTEC Coupe (C207 facelift, produced from July 2014 to September 2015) represented a sophisticated blend of performance, efficiency, and luxury within the E-Class range. Positioned as a mid-to-upper tier offering, it catered to buyers seeking a refined grand tourer experience with the benefits of a modern diesel powertrain. This variant combined a 3.0-liter V6 turbodiesel engine with the advanced 9G-TRONIC nine-speed automatic transmission, offering a compelling alternative to its gasoline-powered siblings and establishing itself as a popular choice in European markets where diesel engines were favored.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Coupe (C207, facelift 2013) |
| Type (Engine) | E 350 BlueTEC 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) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (extra urban) | 4.6-4.7 l/100 km (51.1 – 50 US mpg, 61.4 – 60.1 UK mpg, 21.7 – 21.3 km/l) |
| Fuel consumption (combined) | 5.1-5.2 l/100 km (46.1 – 45.2 US mpg, 55.4 – 54.3 UK mpg, 19.6 – 19.2 km/l) |
| CO2 emissions | 134-136 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) – Electronically limited |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.6 kg/Hp, 150.9 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 362.6 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 642.838 |
| 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 capacity | 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 capacity | 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 |
Powertrain & Engine Architecture
The heart of the E 350 BlueTEC Coupe was the OM 642.838 3.0-liter V6 diesel engine. This engine was a highly refined unit, featuring a common-rail direct injection system operating at pressures up to 2,000 bar. This high-pressure injection, combined with a sophisticated turbocharger and intercooler setup, allowed for efficient combustion and impressive torque output. The engine also incorporated a diesel particulate filter (DPF) and a selective catalytic reduction (SCR) system utilizing AdBlue to minimize harmful emissions, ensuring compliance with stringent Euro 6 standards. The valvetrain employed a double overhead camshaft (DOHC) design with four valves per cylinder, optimizing gas flow for enhanced performance. Paired with this engine was the 9G-TRONIC nine-speed automatic transmission. This transmission offered a wider range of gear ratios compared to traditional eight-speed automatics, contributing to improved fuel economy and smoother acceleration. The 9G-TRONIC featured a torque converter lockup clutch that engaged across multiple gears, further enhancing efficiency.
Driving Characteristics
The E 350 BlueTEC Coupe delivered a distinctly refined driving experience. The 620 Nm (457 lb-ft) of torque, available from a low 1600 rpm, provided effortless acceleration and strong mid-range punch. While not as overtly sporty as the gasoline-powered E 350 or E 550 models, the diesel offered a more relaxed and confident feel, particularly during highway cruising. The 9G-TRONIC transmission shifted smoothly and intelligently, selecting the optimal gear for any given situation. The wide gear spread allowed the engine to operate within its most efficient range more often, contributing to excellent fuel economy. Compared to manual transmission versions of similar diesel E-Class models, the 9G-TRONIC offered greater convenience and ease of use, although some enthusiasts might have preferred the greater driver involvement of a manual gearbox.
Equipment & Trim Levels
The E 350 BlueTEC Coupe typically came well-equipped as standard. Common features included leather upholstery, automatic climate control, a premium sound system, and a host of safety technologies such as adaptive brake assist, lane keeping assist, and collision prevention assist. Optional extras included a panoramic sunroof, upgraded interior trim materials, a head-up display, and advanced driver assistance systems like Distronic Plus adaptive cruise control. The interior design was characterized by Mercedes-Benz’s signature blend of luxury and technology, with a focus on high-quality materials and intuitive controls. The dashboard layout was clean and elegant, with a central display screen providing access to various vehicle functions and infotainment options.
Chassis & Braking
The C207 E-Class Coupe featured a sophisticated chassis design aimed at balancing comfort and handling. The front suspension utilized a multi-link setup with coil springs and a transverse stabilizer bar, while the rear suspension employed an independent multi-link spring suspension, also with a stabilizer bar. This configuration provided a comfortable ride while maintaining good body control. Braking duties were handled by ventilated discs on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESP) were standard features, enhancing safety and stability.
Market Reception & Comparison
The E 350 BlueTEC Coupe was generally well-received by automotive critics. It was praised for its refined powertrain, comfortable ride, and luxurious interior. Fuel economy was a significant selling point, particularly in Europe, where diesel fuel was often cheaper than gasoline. Compared to the E 350 gasoline model, the BlueTEC offered superior fuel efficiency and comparable performance, albeit with a slightly different driving character. The E 250 CDI, a lower-powered diesel variant, offered a more affordable entry point into the E-Class Coupe range, but lacked the E 350 BlueTEC’s outright performance and refinement.
Legacy
The OM 642 engine family, including the OM 642.838 found in the E 350 BlueTEC, has proven to be remarkably durable and reliable. With proper maintenance, these engines can accumulate high mileage without major issues. The 9G-TRONIC transmission has also demonstrated good long-term reliability. In the used car market, the E 350 BlueTEC Coupe remains a desirable option for buyers seeking a comfortable, efficient, and well-equipped grand tourer. However, potential buyers should be aware of the maintenance requirements associated with diesel engines, including regular DPF regeneration and AdBlue refills. The combination of luxury, performance, and fuel efficiency continues to make this variant a compelling choice even years after its production ended.
