The Mercedes-Benz E 200 CDI BlueEFFICIENCY, produced between 2009 and 2011, was a key variant within the W212 E-Class range. Positioned as an entry-level diesel offering, it aimed to provide the renowned E-Class comfort and refinement with improved fuel economy. This model was primarily marketed in Europe, where diesel engines held a significant market share, and offered a balance between performance and running costs. It represented a significant step forward in diesel technology for Mercedes-Benz, incorporating BlueEFFICIENCY measures to reduce emissions and improve fuel consumption.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class (W212) |
| Type | E 200 CDI BlueEFFICIENCY (136 Hp) 5G-TRONIC |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7-7.4 l/100 km (33.6 – 31.8 US mpg, 40.4 – 38.2 UK mpg, 14.3 – 13.5 km/l) |
| Fuel consumption (extra urban) | 4.6-5 l/100 km (51.1 – 47 US mpg, 61.4 – 56.5 UK mpg, 21.7 – 20 km/l) |
| Fuel consumption (combined) | 5.5-5.9 l/100 km (42.8 – 39.9 US mpg, 51.4 – 47.9 UK mpg, 18.2 – 16.9 km/l) |
| CO2 emissions | 145-153 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.3 sec |
| Acceleration 0 – 62 mph | 10.3 sec |
| Acceleration 0 – 60 mph | 9.8 sec |
| Maximum speed | 207 km/h (128.62 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12.2 kg/Hp, 81.9 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 198.8 Nm/tonne |
| Power | 136 Hp @ 3000-4600 rpm |
| Torque | 330 Nm @ 1600-2800 rpm (243.4 lb.-ft. @ 1600-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.925 |
| 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 | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1660 kg (3659.67 lbs.) |
| Max. weight | 2270 kg (5004.49 lbs.) |
| Max load | 610 kg (1344.82 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) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Length | 4868 mm (191.65 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2071 mm (81.54 in.) |
| Height | 1470 mm (57.87 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1600 mm (62.99 in.) |
| Rear track | 1619 mm (63.74 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1153 mm (45.39 in.) |
| Drag coefficient (Cd) | 0.25 |
| Minimum turning circle | 11.25 m (36.91 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link 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 | 205/60 R16; 225/55 R16; 245/45 R17 |
| Wheel rims size | 7J x 16; 7.5J x 16; 8J x 17 |
INTRODUCTION
The W212 E-Class, produced from 2009 to 2016, represented the ninth generation of Mercedes-Benz’s mid-size executive car. The E 200 CDI BlueEFFICIENCY, launched early in the W212’s production run, was designed to appeal to buyers seeking a fuel-efficient and refined diesel sedan. It utilized the OM651 engine family, a mainstay of Mercedes-Benz’s diesel offerings, and was paired exclusively with the 5G-TRONIC automatic transmission. This combination aimed to deliver a comfortable driving experience with reduced emissions and improved fuel economy compared to earlier E-Class diesel models.
Powertrain & Engine Architecture
At the heart of the E 200 CDI BlueEFFICIENCY lies the OM 651.925, a 2.1-liter inline-four cylinder diesel engine. This engine is a highly advanced design for its time, featuring common-rail direct injection, a variable geometry turbocharger, and an intercooler. The common-rail system, operating at extremely high pressures, ensures precise fuel delivery and optimized combustion. The engine also incorporates a diesel particulate filter (DPF) to minimize harmful emissions, meeting the stringent Euro 5 standards. The DOHC valvetrain, with four valves per cylinder, further enhances breathing and contributes to the engine’s efficiency. The 5G-TRONIC automatic transmission, a five-speed torque converter automatic, was chosen for its smooth operation and ability to complement the engine’s torque characteristics. It features adaptive shift programming, adjusting shift points based on driving style and conditions.
Driving Characteristics
The E 200 CDI BlueEFFICIENCY offered a comfortable and refined driving experience, prioritizing fuel efficiency over outright performance. With 136 horsepower and 330 Nm (243 lb-ft) of torque, acceleration was adequate for everyday driving, with a 0-60 mph time of around 9.8 seconds. The 5G-TRONIC transmission provided smooth and seamless gear changes, contributing to a relaxed driving experience. Compared to the more powerful E 250 CDI or E 350 models, the E 200 CDI felt less urgent in its acceleration. However, the readily available torque from the diesel engine made it well-suited for highway cruising and overtaking maneuvers. The gear ratios were optimized for fuel economy, meaning the engine often operated at lower RPMs during normal driving conditions. The rear-wheel drive configuration provided balanced handling, typical of Mercedes-Benz sedans.
Equipment & Trim Levels
The E 200 CDI BlueEFFICIENCY typically came equipped with a generous level of standard features, reflecting the E-Class’s position as a premium vehicle. Standard equipment included automatic climate control, a multi-function steering wheel, power windows and mirrors, and a high-quality audio system. Upholstery was typically cloth or Artico leatherette, with optional upgrades to full leather available. Common optional extras included a sunroof, navigation system, parking sensors, and upgraded alloy wheels. The ‘BlueEFFICIENCY’ designation also included specific aerodynamic enhancements, such as a partially closed radiator grille, to reduce drag and improve fuel economy. Trim levels were relatively simple, with options primarily focused on adding convenience and luxury features.
Chassis & Braking
The W212 E-Class featured a sophisticated chassis design, utilizing an independent multi-link suspension at both the front and rear. This suspension setup provided a comfortable ride quality while maintaining good handling characteristics. The E 200 CDI, being a lower-powered variant, typically featured slightly smaller brakes compared to the higher-performance models. Front brakes were ventilated discs, while rear brakes were solid discs. Anti-lock Braking System (ABS) was standard, along with Electronic Stability Program (ESP) to enhance safety. The steering system was a hydraulic power steering rack and pinion, providing precise and responsive steering feel. Stabilizer bars were fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The E 200 CDI BlueEFFICIENCY was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that the engine lacked the outright performance of its larger counterparts. Compared to the E 250 CDI, which offered more power and torque, the E 200 CDI was seen as a more economical choice, appealing to drivers who prioritized fuel savings over performance. Against competitors like the BMW 520d and Audi A6 2.0 TDI, the E 200 CDI offered a comparable level of refinement and fuel economy, with the Mercedes-Benz often being lauded for its luxurious interior and comfortable ride. Reliability was generally good, although the diesel particulate filter (DPF) could require occasional maintenance, particularly for drivers who primarily undertook short journeys.
Legacy
The E 200 CDI BlueEFFICIENCY represents a significant step in Mercedes-Benz’s development of fuel-efficient diesel technology. The OM 651 engine proved to be a robust and reliable powerplant, and many examples remain on the road today. In the used car market, the E 200 CDI is often sought after by buyers looking for a comfortable, reliable, and economical executive car. While newer E-Class models offer even greater fuel efficiency and performance, the W212 E 200 CDI BlueEFFICIENCY remains a popular choice for those seeking a well-built and refined diesel sedan at an affordable price point. The 5G-TRONIC transmission, while not as advanced as modern automatic transmissions, is known for its durability and smooth operation.
