The Mercedes-Benz E 250 BlueTEC, produced from July 2014 to January 2016, was a key variant within the W212 E-Class facelift range. Positioned as a fuel-efficient and refined option, it catered to buyers seeking a balance between performance and economy in a luxury executive sedan. This model utilized a 2.1-liter turbocharged diesel engine paired with the innovative 9G-TRONIC nine-speed automatic transmission, representing a significant step forward in drivetrain technology for the E-Class. It was a popular choice in European markets, where diesel engines held a substantial market share, and offered a compelling alternative to gasoline-powered E-Class models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W212, facelift 2013) |
| Type (Engine) | E 250 BlueTEC (204 Hp) 9G-TRONIC |
| Start of production | July, 2014 |
| End of production | January, 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (NEDC) | 5.3-6 l/100 km (44.4 – 39.2 US mpg, 53.3 – 47.1 UK mpg, 18.9 – 16.7 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 3.9-4.2 l/100 km (60.3 – 56 US mpg, 72.4 – 67.3 UK mpg, 25.6 – 23.8 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 4.5-4.7 l/100 km (52.3 – 50 US mpg, 62.8 – 60.1 UK mpg, 22.2 – 21.3 km/l) |
| CO2 emissions (NEDC) | 116-123 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.4 sec |
| Acceleration 0 – 62 mph | 7.4 sec |
| Acceleration 0 – 60 mph | 7 sec (Calculated) |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.5 kg/Hp, 118.3 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 289.9 Nm/tonne |
| 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 651.924 |
| 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) |
| Coolant | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1725 kg (3802.97 lbs.) |
| Max. weight | 2385 kg (5258.02 lbs.) |
| Max load | 660 kg (1455.05 lbs.) |
| Trunk (boot) space – minimum | 490 l (17.3 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| AdBlue tank | 25.5 l (6.74 US gal | 5.61 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 84 kg (185.19 lbs.) |
| Length | 4879 mm (192.09 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2071 mm (81.54 in.) |
| Height | 1474 mm (58.03 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1598 mm (62.91 in.) |
| Rear (Back) track | 1614 mm (63.54 in.) |
| Front overhang | 849 mm (33.43 in.) |
| Rear overhang | 1156 mm (45.51 in.) |
| Minimum turning circle | 11.28 m (37.01 ft.) |
| Drivetrain Architecture | 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, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
Powertrain & Engine Architecture
The heart of the E 250 BlueTEC is the OM 651.924 2.1-liter inline-four diesel engine. This engine is a highly refined unit, featuring common-rail direct injection and a sophisticated two-stage turbocharging system. The first turbocharger is a variable geometry turbo (VGT) that provides excellent low-end response, while the second, smaller turbocharger, kicks in at higher RPMs to maintain power throughout the rev range. This bi-turbo setup contributes to the engine’s impressive 500 Nm (368.78 lb.-ft.) of torque, available from a low 1600-1800 rpm. The engine also incorporates an intercooler to further enhance performance and efficiency. The 16.2:1 compression ratio is typical for a diesel engine, optimizing combustion efficiency. The 9G-TRONIC nine-speed automatic transmission is a crucial component, offering a wider range of gear ratios than traditional eight-speed automatics. This allows the engine to operate more frequently within its optimal efficiency zone, contributing to improved fuel economy. The transmission features a torque converter lockup clutch that minimizes slippage and further enhances efficiency.
Driving Characteristics
The E 250 BlueTEC 9G-TRONIC delivers a smooth and refined driving experience. While not overtly sporty, the engine provides ample power for comfortable cruising and confident overtaking. The 9G-TRONIC transmission shifts seamlessly, and the wide gear spread ensures that the engine is rarely strained. Compared to the more powerful E 350 models, the E 250 BlueTEC prioritizes fuel efficiency over outright acceleration. The 0-60 mph time of around 7 seconds is respectable, but the real strength lies in its mid-range torque, making it easy to maintain highway speeds with minimal effort. Compared to manual transmission versions of the same engine, the 9G-TRONIC offers greater convenience and, in many cases, slightly improved fuel economy due to the optimized gear selection.
Equipment & Trim Levels
The E 250 BlueTEC typically came well-equipped, reflecting its position as a premium executive sedan. Standard features often included leather upholstery, automatic climate control, a high-resolution infotainment system with navigation, and a suite of safety features such as ABS, ESP, and multiple airbags. Optional extras included features like a panoramic sunroof, premium sound system, adaptive cruise control, lane-keeping assist, and air suspension. Interior trim levels varied, with options for wood or aluminum accents. The overall interior design emphasized luxury and comfort, with high-quality materials and a focus on ergonomics.
Chassis & Braking
The W212 E-Class chassis is well-engineered, providing a comfortable ride and stable handling. The E 250 BlueTEC typically featured coil spring suspension with multi-link independent suspension at both the front and rear. Air suspension was available as an option, offering an even more refined ride quality and the ability to adjust ride height. The braking system consisted of ventilated discs at the front and solid discs at the rear, providing ample stopping power. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) were standard features, enhancing safety and control.
Market Reception & Comparison
The E 250 BlueTEC was generally well-received by automotive critics, who praised its fuel efficiency, refined engine, and comfortable ride. It was often seen as a sensible choice for buyers who prioritized economy and practicality over outright performance. Compared to the E 350 gasoline models, the E 250 BlueTEC offered significantly better fuel economy, making it a more attractive option for high-mileage drivers. However, some critics noted that the engine lacked the punch of the more powerful gasoline engines. In terms of reliability, the OM 651 engine family is generally considered to be robust and durable, although regular maintenance is essential to ensure long-term reliability.
Legacy
The Mercedes-Benz E 250 BlueTEC (W212) remains a popular choice in the used car market, particularly for those seeking a fuel-efficient and comfortable luxury sedan. The OM 651 engine has proven to be a reliable unit when properly maintained, and the 9G-TRONIC transmission is also generally considered to be durable. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the vehicle has been primarily used for short trips. Overall, the E 250 BlueTEC represents a well-rounded and practical option in the luxury sedan segment, offering a compelling combination of performance, efficiency, and comfort.
