The Mercedes-Benz E 250 BlueTEC Cabriolet (A207, facelift 2013) represents a compelling blend of luxury, efficiency, and open-air driving pleasure. Produced from July 2014 to September 2015, this variant occupied a significant position within the A207 E-Class Cabriolet range, offering a diesel-powered alternative to the gasoline engines. It was positioned as a mid-range offering, appealing to buyers seeking a balance between performance and fuel economy. The “BlueTEC” designation signifies the inclusion of advanced diesel technology aimed at reducing emissions and improving efficiency.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class Cabrio (A207, facelift 2013) |
| Type (Engine) | E 250 BlueTEC (204 Hp) |
| 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) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg) |
| Fuel consumption (extra urban) | 4.3-4.5 l/100 km (54.7 – 52.3 US mpg) |
| Fuel consumption (combined) | 5-5.2 l/100 km (47 – 45.2 US mpg) |
| CO2 emissions | 130-135 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 | 1785 kg (3935.25 lbs.) |
| Max. weight | 2330 kg (5136.77 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 | 6 |
| Gearbox type | Manual transmission |
Powertrain & Engine Architecture
The E 250 BlueTEC Cabriolet is powered by the OM 651.911, a 2.1-liter inline-four cylinder diesel engine. This engine is a cornerstone of Mercedes-Benz’s diesel offerings, known for its robust construction and efficiency. The OM 651 utilizes a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A key feature is its bi-turbocharger setup, employing a smaller turbocharger for quick response at low engine speeds and a larger turbocharger for increased power at higher RPMs. This configuration helps to mitigate turbo lag and provide a broad, usable torque curve. The engine also incorporates an intercooler to further enhance performance by cooling the intake air. The engine’s valvetrain employs a double overhead camshaft (DOHC) design with four valves per cylinder, contributing to efficient gas exchange. The 6-speed manual transmission was standard, providing drivers with direct control over gear selection.
Driving Characteristics
The 204 horsepower and 368 lb-ft of torque produced by the OM 651.911 engine provide the E 250 BlueTEC Cabriolet with respectable performance. Acceleration from 0 to 60 mph takes approximately 7.3 seconds, and it achieves a top speed of 151 mph. While not as overtly sporty as the gasoline-powered E-Class variants, the diesel engine delivers strong low-end torque, making it well-suited for relaxed cruising and effortless overtaking. The manual transmission allows for engaging driving experience, but the gear ratios are tuned more for fuel efficiency than outright acceleration. Compared to the more powerful E 350 or E 550 Cabriolets, the E 250 BlueTEC offers a more economical driving experience, but at the expense of some outright speed.
Equipment & Trim Levels
The E 250 BlueTEC Cabriolet came standard with a comprehensive array of features, befitting its luxury positioning. Standard equipment typically included leather upholstery, automatic climate control, a premium audio system, and power-adjustable seats. The A207 facelift (2013 onwards) brought updated interior styling, including a revised dashboard and steering wheel. Optional extras included features such as a navigation system, a panoramic sunroof, and advanced driver-assistance systems like lane-keeping assist and blind-spot monitoring. Interior trim options allowed for personalization, with a range of wood and aluminum finishes available.
Chassis & Braking
The E 250 BlueTEC Cabriolet utilizes a coil spring, independent multi-link suspension system at both the front and rear, providing a comfortable and controlled ride. A transverse stabilizer bar is fitted at both ends to reduce body roll during cornering. The braking system consists of ventilated discs at the front and solid discs at the rear, providing adequate stopping power. Anti-lock braking system (ABS) is standard, enhancing safety and stability. The steering system is a rack-and-pinion type with electric power steering, offering precise and responsive handling.
Market Reception & Comparison
The E 250 BlueTEC Cabriolet was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. The diesel engine’s torque delivery was a particular highlight, making it a pleasant car to drive in a variety of conditions. Compared to the gasoline-powered E-Class Cabriolets, the E 250 BlueTEC offered significantly better fuel economy, making it an attractive option for drivers who prioritize efficiency. However, some critics noted that the diesel engine lacked the responsiveness and sound of the gasoline engines.
Legacy
The OM 651 engine family, including the 2.1-liter variant found in the E 250 BlueTEC, has proven to be remarkably durable and reliable. With proper maintenance, these engines can accumulate high mileage without major issues. On the used car market, the E 250 BlueTEC Cabriolet represents a good value proposition, offering a luxurious and well-equipped convertible at a relatively affordable price. However, potential buyers should be aware of the potential maintenance costs associated with diesel engines, such as diesel particulate filter (DPF) maintenance and AdBlue refills. Overall, the E 250 BlueTEC Cabriolet remains a desirable and capable open-top luxury car.
