The Mercedes-Benz E-Class T-modell (S212) E 250 CDI BlueEFFICIENCY, produced from 2009 to 2011, represented a compelling blend of practicality, efficiency, and luxury within the E-Class range. Positioned as a mid-range offering in the T-modell (estate) body style, it catered to buyers seeking a spacious and refined vehicle with strong fuel economy. This variant utilized a 2.1-liter turbocharged diesel engine paired with a 5G-TRONIC automatic transmission, offering a comfortable and capable driving experience. It was part of the W212 series, the eighth generation of the E-Class, known for its technological advancements and sophisticated design.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class T-modell (S212) |
| Type (Engine) | E 250 CDI BlueEFFICIENCY (204 Hp) 5G-TRONIC |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.1-8.4 l/100 km (29-28 US mpg, 34.9-33.6 UK mpg, 12.3-11.9 km/l) |
| Fuel consumption (extra urban) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg, 20.4 km/l) |
| Fuel consumption (combined) | 6.1-6.3 l/100 km (38.6-37.3 US mpg, 46.3-44.8 UK mpg, 16.4-15.9 km/l) |
| CO2 emissions | 159-163 g/km |
| Fuel Type | Diesel |
| Acceleration 0-100 km/h | 8.1 sec |
| Acceleration 0-62 mph | 8.1 sec |
| Acceleration 0-60 mph | 7.7 sec |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 8.7 kg/Hp, 115.3 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 282.5 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) |
| Kerb Weight | 1770 kg (3902.18 lbs.) |
| Max. weight | 2420 kg (5335.19 lbs.) |
| Max load | 650 kg (1433 lbs.) |
| Trunk (boot) space – minimum | 695 l (24.54 cu. ft.) |
| Trunk (boot) space – maximum | 1950 l (68.86 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 (12%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4895 mm (192.72 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2071 mm (81.54 in.) |
| Height | 1512 mm (59.53 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1585 mm (62.4 in.) |
| Rear track | 1604 mm (63.15 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1180 mm (46.46 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 11.25 m (36.91 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension, Air suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/55 R16; 245/45 R17 |
| Wheel rims size | 7.5J x 16; 8J x 17 |
INTRODUCTION
The E 250 CDI BlueEFFICIENCY T-modell, launched in 2009, was a key component of the S212 E-Class estate range. It aimed to provide a practical and economical option for families and individuals needing substantial cargo space without sacrificing the luxury and refinement expected from a Mercedes-Benz. The “BlueEFFICIENCY” designation signified Mercedes-Benz’s efforts to improve fuel economy and reduce emissions through various technologies. This model occupied a middle ground in the T-modell lineup, positioned above the base E 200 CDI and below the more powerful E 350 CDI.
Powertrain & Engine Architecture
At the heart of the E 250 CDI T-modell lay the OM 651.924, a 2.1-liter inline-four cylinder diesel engine. This engine was a significant advancement in diesel technology, featuring common-rail direct injection and a sophisticated bi-turbocharger system. The twin turbochargers – a smaller, variable geometry turbo for quick response at low engine speeds and a larger turbo for increased power at higher RPMs – worked in concert to deliver a broad torque curve. The engine produced 204 horsepower at 4200 rpm and a substantial 500 Nm (368 lb-ft) of torque between 1600 and 1800 rpm. The engine also incorporated a diesel particulate filter (DPF) to minimize emissions. The 5G-TRONIC automatic transmission, a five-speed unit, was specifically tuned to complement the engine’s characteristics, providing smooth and efficient gear changes. This transmission was known for its responsiveness and ability to adapt to driving conditions.
Driving Characteristics
The E 250 CDI T-modell offered a comfortable and refined driving experience. While not overtly sporty, the engine’s ample torque provided brisk acceleration, with a 0-60 mph time of around 7.7 seconds. The 5G-TRONIC transmission contributed to smooth progress, and the gear ratios were well-matched to the engine’s powerband. Compared to the more powerful E 350 CDI, the E 250 CDI felt less urgent in its acceleration, but it offered a more relaxed and fuel-efficient driving experience. Against the base E 200 CDI, the E 250 CDI provided a noticeable performance boost without significantly compromising fuel economy. The rear-wheel drive configuration provided balanced handling, and the optional air suspension on the rear axle further enhanced ride comfort, particularly when carrying a load.
Equipment & Trim Levels
The E 250 CDI BlueEFFICIENCY T-modell came standard with a generous array of features, reflecting its position as a premium estate car. Standard equipment typically included automatic climate control, a multi-function steering wheel, power-adjustable front seats, and a high-quality audio system. Interior upholstery was typically a combination of fabric and Artico (Mercedes-Benz’s synthetic leather). Optional extras included leather upholstery, a sunroof, a navigation system, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Trim levels varied depending on the market, but generally offered packages that bundled popular options together.
Chassis & Braking
The S212 E-Class T-modell featured a robust chassis designed to handle both everyday driving and substantial loads. The front suspension utilized an independent multi-link setup, providing excellent ride quality and handling precision. The rear suspension employed an independent multi-link system as well, with the option of air suspension for enhanced comfort and load leveling. Braking duties were handled by ventilated discs at the front and solid discs at the rear, coupled with ABS (Anti-lock Braking System) and electronic brakeforce distribution. The steering was a hydraulic power-assisted rack and pinion system, offering precise and responsive control.
Market Reception & Comparison
The E 250 CDI BlueEFFICIENCY T-modell was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. The combination of diesel power and automatic transmission was seen as a practical and appealing choice for long-distance drivers and families. Compared to its competitors, such as the Audi A6 Avant and BMW 5 Series Touring, the E 250 CDI offered a compelling blend of luxury, practicality, and economy. Fuel economy figures of around 38-45 mpg (combined) were highly competitive for its class. Reliability was generally good, although, like all modern diesel vehicles, the DPF could require occasional maintenance.
Legacy
The OM 651 engine family, including the 2.1-liter variant found in the E 250 CDI, proved to be a durable and reliable powerplant. These engines are known for their longevity and relatively low maintenance costs, provided they are properly serviced. In the used car market, the E 250 CDI T-modell remains a popular choice for buyers seeking a practical, comfortable, and fuel-efficient estate car. While newer models offer more advanced technology and features, the S212 E-Class T-modell continues to represent a solid value proposition, offering a refined driving experience and a spacious interior at a reasonable price point.




