2014-2015 Mercedes-Benz E-class Cabrio (A207 facelift ) E 220 BlueTEC (170 Hp) 9G-TRONIC

The Mercedes-Benz E-Class Cabriolet (A207) facelift, specifically the E 220 BlueTEC variant with the 9G-TRONIC automatic transmission, was produced from July 2014 to September 2015. This model represented a refined offering within the A207 generation, which itself was a significant update to the original A207 introduced in 2010. Positioned as a fuel-efficient and comfortable open-top luxury vehicle, the E 220 BlueTEC aimed to appeal to buyers seeking a balance between performance, economy, and the prestige associated with the Mercedes-Benz brand. It occupied a mid-range position in the Cabriolet lineup, slotting below the more powerful E 350 and E 550 models, but offering a more economical alternative to those higher trims.

Technical Specifications

Powertrain & Engine Architecture

The E 220 BlueTEC Cabriolet was powered by the OM651.911 2.1-liter inline-four diesel engine. This engine was a mainstay of the Mercedes-Benz lineup, known for its efficiency and durability. The ‘BlueTEC’ designation indicated the inclusion of advanced emissions control technologies, including a diesel particulate filter (DPF) and selective catalytic reduction (SCR) system utilizing AdBlue (Diesel Exhaust Fluid) to reduce NOx emissions. The engine featured a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A bi-turbocharger setup, employing both a small and a large turbocharger, minimized turbo lag and provided a broad torque curve. The valvetrain utilized a double overhead camshaft (DOHC) design with four valves per cylinder. The 9G-TRONIC automatic transmission, a nine-speed unit, was a key component of the powertrain. Its wide gear ratio spread contributed to both fuel efficiency and smooth acceleration.

Driving Characteristics

The 170 hp and 400 Nm (295 lb-ft) of torque delivered by the E 220 BlueTEC, coupled with the nine-speed automatic, resulted in a comfortable and relaxed driving experience. Acceleration from 0-60 mph took approximately 8.1 seconds, which was adequate for everyday driving but noticeably slower than the more powerful E 350 or E 550 Cabriolet models. The 9G-TRONIC transmission was programmed for smooth shifts and prioritized fuel economy over aggressive performance. The gear ratios were optimized to keep the engine operating within its peak torque band, providing sufficient power for highway cruising and overtaking maneuvers. Compared to a manual transmission equipped E 220, the automatic offered greater convenience, particularly in urban traffic, but at the expense of some driver engagement.

Equipment & Trim Levels

The E 220 BlueTEC Cabriolet came standard with a comprehensive list of features, including leather upholstery, automatic climate control, a multi-function steering wheel, and a high-quality audio system. The A207 facelift introduced a revised dashboard design with a larger central display screen and updated infotainment system. Optional extras included features such as the AIRMATIC air suspension system, which provided a more comfortable ride, premium sound systems from Harman Kardon or Bang & Olufsen, and various driver assistance systems like lane keeping assist and blind spot monitoring. Interior trim options included a variety of wood veneers and aluminum accents.

Chassis & Braking

The E-Class Cabriolet utilized a robust chassis with a multi-link independent suspension at both the front and rear. The front suspension incorporated coil springs and a transverse stabilizer bar, while the rear suspension featured coil springs and a stabilizer bar. This setup provided a good balance between ride comfort and handling. The braking system consisted of ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard. The steering was a rack-and-pinion system with electric power assistance.

Market Reception & Comparison

The E 220 BlueTEC Cabriolet was generally well-received by automotive critics for its fuel efficiency and comfortable ride. It was praised as a practical and refined open-top luxury car. However, some reviewers noted that the performance was not as exhilarating as that of the higher-powered E-Class models. Compared to the E 350 Cabriolet, the E 220 BlueTEC offered significantly better fuel economy but lacked the same level of acceleration. The E 220 BlueTEC also provided a more economical alternative to the petrol-powered E 250 Cabriolet, particularly in European markets where diesel fuel was often cheaper than gasoline.

Legacy

The OM651 engine family, including the OM651.911 found in the E 220 BlueTEC, has proven to be remarkably durable and reliable. With proper maintenance, these engines can accumulate high mileage without major issues. The 9G-TRONIC transmission has also demonstrated good long-term reliability. On the used car market, the E 220 BlueTEC Cabriolet represents a relatively affordable entry point into Mercedes-Benz open-top luxury. However, potential buyers should be aware of the maintenance requirements associated with diesel engines, including the need to regularly replenish AdBlue and ensure the DPF is functioning correctly. The combination of fuel efficiency, comfort, and the prestige of the Mercedes-Benz brand continues to make this variant a desirable option for buyers seeking a refined and economical Cabriolet.