The Mercedes-Benz E 250 CDI BlueEFFICIENCY 4MATIC, produced between August 2011 and January 2013, was a key variant within the W212 E-Class range. Positioned as a mid-range offering, it combined a fuel-efficient diesel engine with the security of all-wheel drive and a sophisticated automatic transmission. This model aimed to balance performance, economy, and practicality for buyers seeking a comfortable and capable executive sedan. It was primarily marketed in Europe and other regions where diesel engines held significant market share, offering a compelling alternative to petrol-powered E-Class models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W212) |
| Type | E 250 CDI BlueEFFICIENCY (204 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | August, 2011 |
| End of production | January, 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7-7.1 l/100 km (33.6 – 33.1 US mpg, 40.4 – 39.8 UK mpg, 14.3 – 14.1 km/l) |
| Fuel consumption (extra urban) | 4.8-5 l/100 km (49 – 47 US mpg, 58.9 – 56.5 UK mpg, 20.8 – 20 km/l) |
| Fuel consumption (combined) | 5.6-5.8 l/100 km (42 – 40.6 US mpg, 50.4 – 48.7 UK mpg, 17.9 – 17.2 km/l) |
| CO2 emissions | 147-152 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.9 sec |
| Acceleration 0 – 62 mph | 7.9 sec |
| Acceleration 0 – 60 mph | 7.5 sec |
| Maximum speed | 238 km/h (147.89 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 8.6 kg/Hp, 116.2 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 284.9 Nm/tonne |
| Power | 204 Hp @ 4200 rpm |
| Power per litre | 95.2 Hp/l |
| 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 | 8.6 l (9.09 US qt | 7.57 UK qt) |
| Kerb Weight | 1755 kg (3869.11 lbs.) |
| Max. weight | 2375 kg (5235.98 lbs.) |
| Max load | 620 kg (1366.87 lbs.) |
| Trunk (boot) space (minimum) | 540 l (19.07 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (with brakes) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 84 kg (185.19 lbs.) |
| Length | 4868 mm (191.65 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2071 mm (81.54 in.) |
| Height | 1471 mm (57.91 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1598 mm (62.91 in.) |
| Rear track | 1614 mm (63.54 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1153 mm (45.39 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle | 11.25 m (36.91 ft.) |
| Drivetrain Architecture | ICE drives all four wheels permanently |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC PLUS |
| Front suspension | Coil spring, Independent multi-link, Transverse stabilizer, Optional Air Suspension |
| Rear suspension | Independent multi-link, Stabilizer, Optional Air Suspension |
| Front brakes | Ventilated discs, 322 mm |
| Rear brakes | Disc, 300 mm |
| Assisting systems | ABS |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Tires size | 245/45 R17; 245/40 R18 |
| Wheel rims size | 8J x 17; 8.5J x 18 |
Powertrain & Engine Architecture
The heart of the E 250 CDI BlueEFFICIENCY 4MATIC 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 bi-turbocharger system. The twin turbos, one larger and one smaller, work in sequence to provide both strong low-end torque and high-end power. The smaller turbo spools up quickly at lower engine speeds, minimizing turbo lag and providing responsive acceleration. As engine speed increases, the larger turbo takes over, delivering sustained power. The engine also incorporates an intercooler to further enhance performance by cooling the intake air. The 16.2:1 compression ratio is typical for a diesel engine, contributing to its efficiency. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, is known for its smooth and quick shifts. It features a torque converter lock-up clutch that engages at higher speeds to improve fuel economy. The 4MATIC all-wheel-drive system utilizes a multi-plate clutch to distribute torque between the front and rear axles, providing enhanced traction in various driving conditions.
Driving Characteristics
The E 250 CDI 4MATIC offers a comfortable and refined driving experience. The 204 horsepower and 368 lb-ft of torque provide ample power for everyday driving and overtaking maneuvers. While not a sports car, the engine delivers strong acceleration, reaching 60 mph in approximately 7.5 seconds. The 7G-TRONIC PLUS transmission contributes to a smooth and seamless driving experience, with well-chosen gear ratios that keep the engine in its optimal power band. The all-wheel-drive system provides excellent stability and traction, particularly in inclement weather. Compared to the more powerful E 350 models, the E 250 CDI offers a more relaxed and fuel-efficient driving experience. It also differs from the E 220 CDI, offering a noticeable performance increase thanks to the larger engine displacement and more advanced turbocharging system.
Equipment & Trim Levels
The E 250 CDI BlueEFFICIENCY 4MATIC typically came well-equipped as standard. Features included automatic climate control, power-adjustable front seats, a multi-function steering wheel, and a high-quality audio system. Safety features such as ABS, ESP, and multiple airbags were also standard. Optional extras included leather upholstery, a sunroof, a navigation system, and advanced driver-assistance systems like lane-keeping assist and adaptive cruise control. Interior trim levels varied, with options for wood or aluminum accents. The standard upholstery was typically a high-quality cloth, with leather being an available upgrade.
Chassis & Braking
The W212 E-Class features a sophisticated chassis design. The front suspension utilizes a multi-link setup with coil springs and a stabilizer bar, providing a comfortable ride and precise handling. The rear suspension also employs a multi-link design, further enhancing ride quality and stability. The E 250 CDI 4MATIC typically came equipped with ventilated disc brakes at the front and solid disc brakes at the rear. The braking system is assisted by ABS and ESP, providing excellent stopping power and control. The optional Air Suspension system, available on some models, further enhanced ride comfort and allowed for adjustable ride height.
Market Reception & Comparison
The E 250 CDI BlueEFFICIENCY 4MATIC was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined driving experience. The combination of diesel power and all-wheel drive was seen as a practical and appealing option for buyers in regions with harsh winters or challenging road conditions. Compared to the petrol-powered E 350, the E 250 CDI offered significantly better fuel economy, making it a more economical choice for high-mileage drivers. However, some critics noted that the engine could be somewhat noisy compared to its petrol counterparts. Reliability was generally good, with the OM 651 engine proving to be a durable and long-lasting unit.
Legacy
The Mercedes-Benz E 250 CDI BlueEFFICIENCY 4MATIC (W212) remains a popular choice in the used car market. The OM 651 engine is known for its longevity and relatively low maintenance costs, making it an attractive option for buyers seeking a reliable and fuel-efficient executive sedan. While modern diesels have evolved, the W212 E 250 CDI continues to offer a compelling blend of comfort, performance, and economy. The 7G-TRONIC transmission has also proven to be durable, although regular fluid changes are essential for maintaining its smooth operation. The 4MATIC all-wheel-drive system adds to the vehicle’s appeal, providing enhanced safety and stability in all weather conditions.
