2009-2011 Mercedes-Benz E-class Coupe (C207) E 250 CDI BlueEFFICIENCY (204 Hp) 5G-TRONIC

The Mercedes-Benz E-Class Coupe (C207) E 250 CDI BlueEFFICIENCY, produced from July 2009 to April 2011, represented a compelling blend of luxury, performance, and fuel efficiency within the broader C207 E-Class Coupe range. Positioned as a mid-range offering, it slotted between the more accessible E 220 CDI and the higher-performance E 350 CDI models. This variant was primarily aimed at buyers seeking a sophisticated coupe experience with a focus on diesel economy and comfortable long-distance cruising. It utilized the advanced 5G-TRONIC automatic transmission, making it a popular choice for those prioritizing ease of driving over outright sporty engagement. The C207 generation itself was a significant departure from its predecessor, offering a more modern and dynamic design language while retaining the traditional E-Class hallmarks of refinement and build quality.

Technical Specifications

Powertrain & Engine Architecture

The E 250 CDI BlueEFFICIENCY was powered by the OM 651.911, a 2.1-liter inline-four diesel engine. This engine was a cornerstone of Mercedes-Benz’s diesel offerings during this period, known for its robust construction and efficiency. The ‘BlueEFFICIENCY’ designation indicated the inclusion of various fuel-saving technologies, including optimized combustion, reduced friction, and an enhanced exhaust gas recirculation system. The engine employed a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for improved atomization and combustion. A bi-turbocharger setup, utilizing a small and a large turbocharger, provided both rapid response at low engine speeds and sustained power throughout the rev range. The 5G-TRONIC automatic transmission, a five-speed unit, was specifically tuned to complement the engine’s torque characteristics, prioritizing smooth shifts and fuel economy. It featured a torque converter lock-up clutch to minimize slippage and improve efficiency at cruising speeds.

Driving Characteristics

The E 250 CDI Coupe with the 5G-TRONIC transmission offered a relaxed and refined driving experience. While not overtly sporty, the 500 Nm of torque available from just 1600-1800 rpm provided ample power for effortless overtaking and comfortable highway cruising. The automatic transmission, while smooth, wasn’t particularly quick to downshift, meaning that drivers occasionally needed to utilize the manual shift mode for more decisive acceleration. Compared to the E 350 CDI, the E 250 CDI offered a noticeable reduction in performance, with a 0-60 mph time around 7 seconds versus the E 350’s quicker sprint. However, the E 250 CDI excelled in fuel economy, consistently achieving combined figures in the range of 42-46 mpg, making it a practical choice for high-mileage drivers. The gear ratios were optimized for efficiency, with a relatively tall final drive contributing to lower engine speeds at highway speeds.

Equipment & Trim Levels

The E 250 CDI BlueEFFICIENCY typically came standard with a generous array of features, reflecting the E-Class’s luxury positioning. Standard equipment included automatic climate control, a multi-function steering wheel, power-adjustable front seats, and a high-quality audio system. Interior upholstery was typically Artico leather, a synthetic leather alternative offering durability and a premium feel. Optional extras included a panoramic sunroof, upgraded leather upholstery, a navigation system, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. The dashboard layout was typical of the C207 E-Class, featuring a clean and elegant design with metallic accents.

Chassis & Braking

The C207 E-Class Coupe featured a sophisticated chassis designed to balance comfort and handling. The front suspension utilized a multi-link setup with coil springs and a transverse stabilizer bar, while the rear employed an independent multi-link spring suspension, also with a stabilizer bar. This configuration provided a comfortable ride while minimizing body roll during cornering. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) as standard. The hydraulic power steering offered a balanced feel, providing adequate assistance without feeling overly light or disconnected.

Market Reception & Comparison

The E 250 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 5G-TRONIC transmission could feel somewhat dated compared to newer automatic transmissions with more gears. Compared to the E 220 CDI, the E 250 CDI offered a significant performance boost without a substantial penalty in fuel economy. Against the E 350 CDI, it represented a more economical option, albeit with less outright power. Its main competitors included the BMW 3 Series Coupe (E92) and the Audi A5 Coupe, both of which offered a sportier driving experience but often at a higher price point.

Legacy

The OM 651 engine, as used in the E 250 CDI, has proven to be remarkably durable and reliable over the long term. With proper maintenance, these engines can easily exceed 200,000 miles. The 5G-TRONIC transmission, while not as sophisticated as modern automatics, is also generally reliable, although regular fluid changes are crucial. In the used car market today, the C207 E 250 CDI Coupe represents a compelling value proposition, offering a luxurious and efficient coupe experience at an affordable price. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly on vehicles that have primarily been used for short journeys.