The Mercedes-Benz E-Class Cabriolet (A207) facelift, specifically the E 250 BlueTEC variant equipped with the 9G-TRONIC automatic transmission, was produced from July 2014 to September 2015. This model represented a refined offering within the A207 generation, which itself was a significant evolution of the E-Class convertible lineage. Positioned as a mid-range option, the E 250 BlueTEC aimed to balance fuel efficiency with respectable performance, appealing to buyers seeking a luxurious open-top experience without the higher running costs associated with more powerful engines. It sat below the E 350 and E 550 models in the Cabriolet lineup, offering a diesel alternative to the gasoline-powered options.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Cabrio (A207, facelift 2013) |
| Type (Engine) | E 250 BlueTEC (204 Hp) 9G-TRONIC |
| Start of production | July, 2014 |
| End of production | September, 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 5.7-5.8 l/100 km (41.3 – 40.6 US mpg) |
| Fuel consumption (extra urban) | 4.2-4.4 l/100 km (56 – 53.5 US mpg) |
| Fuel consumption (combined) | 4.8-5 l/100 km (49 – 47 US mpg) |
| CO2 emissions | 125-129 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.7 sec |
| Acceleration 0 – 62 mph | 7.7 sec |
| Acceleration 0 – 60 mph | 7.3 sec |
| Maximum speed | 243 km/h (150.99 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.8 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Power | 204 Hp @ 3800 rpm |
| Torque | 500 Nm @ 1600-1800 rpm (368.78 lb.-ft. @ 1600-1800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.911 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 99 mm (3.9 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1790 kg (3946.27 lbs.) |
| Max. weight | 2335 kg (5147.79 lbs.) |
| Max load | 545 kg (1201.52 lbs.) |
| Trunk (boot) space – minimum | 300 l (10.59 cu. ft.) |
| Trunk (boot) space – maximum | 390 l (13.77 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| AdBlue tank | 25 l (6.6 US gal | 5.5 UK gal) |
| Permitted trailer load with brakes (12%) | 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 | 1398 mm (55.04 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 and type of gearbox | 9 gears, 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 | Disc |
Powertrain & Engine Architecture
The heart of the E 250 BlueTEC Cabriolet is the OM 651.911 2.1-liter inline-four diesel engine. This engine is a highly refined unit, representing a significant advancement in diesel technology. It features a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine utilizes a sophisticated two-stage turbocharging system (BiTurbo) with an intercooler, which effectively minimizes turbo lag and maximizes power output across a broad RPM range. The valvetrain employs a double overhead camshaft (DOHC) design with four valves per cylinder, further enhancing breathing and efficiency. 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 within its optimal efficiency zone more frequently, contributing to improved fuel economy.
Driving Characteristics
The E 250 BlueTEC Cabriolet delivers a comfortable and refined driving experience. While not overtly sporty, the 204 horsepower and substantial 368 lb-ft of torque provide ample power for relaxed cruising and confident overtaking. The 9G-TRONIC transmission is well-tuned for smooth shifts, and the close gear ratios keep the engine in its sweet spot. Compared to the more powerful E 350 or E 550 Cabriolets, the E 250 BlueTEC offers a more relaxed pace, prioritizing fuel efficiency and comfort over outright performance. The torque delivery is particularly strong from low RPMs, making it easy to navigate city traffic or maintain speed on the highway. Compared to a manual transmission equipped E-Class, the 9G-TRONIC provides a more seamless and effortless driving experience, particularly appealing to those seeking a luxurious and convenient convertible.
Equipment & Trim Levels
The E 250 BlueTEC Cabriolet came standard with a comprehensive array of features befitting a luxury vehicle. These included leather upholstery, automatic climate control, a premium sound system, and a power-operated soft top. Standard safety features included ABS, traction control, and multiple airbags. Optional extras included features like a navigation system, heated and ventilated seats, a panoramic sunroof, and advanced driver-assistance systems such as lane-keeping assist and adaptive cruise control. Interior trim options allowed for customization, with a range of wood veneers and metallic accents available. The dashboard layout was typical of the A207 E-Class, featuring a blend of classic Mercedes-Benz design elements and modern technology.
Chassis & Braking
The A207 E-Class Cabriolet utilizes a robust chassis designed to provide a comfortable ride and secure handling. The front suspension features a multi-link independent setup with a transverse stabilizer bar, while the rear employs an independent multi-link spring suspension, also with a stabilizer bar. This configuration minimizes body roll and provides a stable platform for cornering. The braking system consists of ventilated discs at the front and solid discs at the rear, providing ample stopping power. ABS (Anti-lock Braking System) is standard, enhancing safety and control during emergency braking situations. The electric power steering offers precise and responsive steering feel.
Market Reception & Comparison
The E 250 BlueTEC Cabriolet was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that its performance was not as exhilarating as that of the more powerful E-Class variants. Compared to the gasoline-powered E 350 Cabriolet, the E 250 BlueTEC offered significantly better fuel economy, making it an attractive option for those who prioritize running costs. The diesel engine also provided a broader torque curve, resulting in strong low-end acceleration. Reliability reports suggest that the OM 651 engine is generally robust and durable, although regular maintenance is essential to ensure long-term reliability.
Legacy
The Mercedes-Benz E 250 BlueTEC Cabriolet (A207) represents a compelling blend of luxury, efficiency, and practicality. The OM 651 engine has proven to be a reliable and durable powerplant, and the 9G-TRONIC transmission contributes to a smooth and refined driving experience. In the used car market, these models are often sought after by buyers looking for a comfortable and fuel-efficient convertible. While not as collectible as some of the more iconic E-Class models, the E 250 BlueTEC Cabriolet offers a sophisticated and enjoyable open-top driving experience at a relatively affordable price point. Properly maintained examples continue to provide years of reliable service, making them a worthwhile consideration for those seeking a luxurious and practical convertible.
