2009-2011 Mercedes-Benz E-class T-modell (S212) E 220 CDI BlueEFFICIENCY (170 Hp) 5G-TRONIC

The Mercedes-Benz E-Class T-modell (S212) E 220 CDI BlueEFFICIENCY, equipped with the 5G-TRONIC automatic transmission, was a popular variant of the fifth-generation E-Class estate (wagon) produced between 2009 and 2011. Positioned as a mid-range offering within the S212 lineup, it balanced fuel efficiency with respectable performance, appealing to buyers seeking a practical and refined vehicle. This model represented Mercedes-Benz’s commitment to diesel technology and aerodynamic efficiency, embodied in the “BlueEFFICIENCY” designation. It served as a key model in the European market, where estates are highly favored, offering a compelling alternative to sedan body styles.

Technical Specifications

INTRODUCTION

The S212 E-Class T-modell, launched in 2009, represented a significant evolution for Mercedes-Benz’s estate car range. Building upon the success of the W211 generation, the S212 offered a more refined driving experience, improved safety features, and a wider range of efficient engines. The E 220 CDI BlueEFFICIENCY variant, powered by a 2.1-liter turbocharged diesel engine and paired with the 5G-TRONIC automatic transmission, was a cornerstone of the lineup, offering a compelling blend of economy and practicality. The “BlueEFFICIENCY” badge signified a suite of technologies aimed at reducing fuel consumption and emissions, including optimized aerodynamics, low-rolling resistance tires, and an efficient engine management system.

Powertrain & Engine Architecture

At the heart of the E 220 CDI BlueEFFICIENCY lies the OM651.924, a 2.143-liter inline-four cylinder diesel engine. This engine is notable for its advanced common-rail direct injection system, capable of delivering fuel at extremely high pressures for optimized combustion. The engine utilizes a sophisticated bi-turbocharger setup – a small turbocharger for quick response at low engine speeds and a larger turbocharger for increased power at higher RPMs. An intercooler further enhances performance by cooling the compressed intake air. The 5G-TRONIC automatic transmission, a five-speed torque converter automatic, was chosen for its smooth shifting characteristics and efficiency. While not the most modern transmission by today’s standards, it was well-regarded for its reliability and comfort. The engine produces 170 horsepower at 3000-4200 rpm and a substantial 400 Nm (295 lb-ft) of torque between 1400 and 2800 rpm, providing ample pulling power for everyday driving and hauling loads.

Driving Characteristics

The E 220 CDI BlueEFFICIENCY offered a comfortable and refined driving experience. The 5G-TRONIC transmission, while lacking the responsiveness of modern eight or nine-speed automatics, provided smooth and predictable gear changes. Acceleration from 0-60 mph took approximately 8.6 seconds, which was adequate for most drivers, though noticeably slower than the more powerful E 350 or E 63 variants. The engine’s strong low-end torque made it well-suited for overtaking maneuvers and effortless cruising on the highway. The gear ratios were tuned for fuel efficiency, meaning the engine often operated at lower RPMs during normal driving conditions. Compared to the manual transmission versions of the E 220 CDI, the automatic offered greater convenience, particularly in urban traffic, but at the expense of some driver engagement.

Equipment & Trim Levels

The E 220 CDI BlueEFFICIENCY typically came well-equipped as standard. Features included automatic climate control, power windows and mirrors, a multi-function steering wheel, and a high-quality audio system. Interior upholstery was typically a combination of fabric and Artico (Mercedes’ synthetic leather). Optional extras included leather upholstery, a sunroof, navigation system, parking sensors, and advanced driver assistance systems such as Distronic (adaptive cruise control) and Pre-Safe brake assist. Trim levels varied depending on the market, but generally offered progressively more luxurious appointments and technology features as you moved up the range.

Chassis & Braking

The S212 E-Class T-modell featured a sophisticated chassis design. Both front and rear suspension utilized an independent multi-link setup, providing a comfortable ride and precise handling. The E 220 CDI, due to its weight, typically featured slightly stiffer spring rates compared to lighter variants. Braking was handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) and Electronic Stability Program (ESP) as standard. The steering was a hydraulic power-assisted rack and pinion system, offering a balanced feel and good feedback.

Market Reception & Comparison

The E 220 CDI BlueEFFICIENCY was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. However, some reviewers noted that the 5G-TRONIC transmission felt dated compared to newer automatic gearboxes. Compared to the E 350, the E 220 CDI offered significantly better fuel economy but lacked the same level of performance. The E 220 CDI also proved to be a more sensible and economical alternative to the high-performance E 63 AMG. In terms of reliability, the OM651 engine proved to be robust, although regular maintenance was crucial to prevent issues with the diesel particulate filter (DPF) and fuel injectors.

Legacy

The E 220 CDI BlueEFFICIENCY, and the OM651 engine family as a whole, has proven to be remarkably durable. Many examples are still on the road today, having accumulated high mileage. On the used car market, these models represent a good value proposition, offering a blend of luxury, practicality, and fuel efficiency. However, potential buyers should be aware of the potential for DPF issues and the importance of maintaining the fuel system. The S212 E-Class T-modell, and particularly the E 220 CDI variant, cemented Mercedes-Benz’s reputation for building high-quality, long-lasting estates that appeal to a wide range of buyers.