2010-2014 Mercedes-Benz R-class Long (V251 facelift ) R 350 V6 BlueTEC (210 Hp) 4MATIC G-TRONIC

The Mercedes-Benz R-Class Long, specifically the R 350 V6 BlueTEC 4MATIC G-TRONIC variant produced from 2010 to 2014, represented a unique offering in the luxury vehicle segment. Part of the second-generation (V251) R-Class, which received a significant facelift in 2010, this model aimed to blend the practicality of a spacious station wagon with the prestige and technology associated with the Mercedes-Benz brand. The “Long” designation indicated an extended wheelbase, providing enhanced passenger space, particularly in the optional third-row seating configuration, accommodating up to seven occupants. This variant was positioned as a mid-to-upper range offering within the R-Class lineup, appealing to buyers seeking a refined and capable vehicle for family transportation and long-distance travel.

Technical Specifications

Powertrain & Engine Architecture

The R 350 V6 BlueTEC utilized the OM 642.870 3.0-liter V6 diesel engine. This engine was a mainstay in the Mercedes-Benz lineup, known for its robust construction and relatively smooth operation for a diesel. The “BlueTEC” designation indicated the inclusion of advanced emissions control technologies, including a particulate filter and a selective catalytic reduction (SCR) system utilizing AdBlue (Diesel Exhaust Fluid) to reduce nitrogen oxide (NOx) emissions, ensuring compliance with stringent Euro 5 standards. The engine featured a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A variable geometry turbocharger with an intercooler further enhanced performance and efficiency. The engine produced 210 horsepower at 3400 rpm and a substantial 540 Nm (398 lb-ft) of torque between 1600 and 2400 rpm. This torque output was a key characteristic, providing strong acceleration and effortless cruising. The engine was paired with Mercedes-Benz’s 7G-TRONIC seven-speed automatic transmission, known for its smooth shifts and efficiency. This transmission was electronically controlled and adapted to driving conditions for optimal performance.

Driving Characteristics

The R 350 V6 BlueTEC offered a comfortable and refined driving experience. The abundance of torque from the diesel engine meant that strong acceleration was readily available, even with a full load of passengers and luggage. The 7G-TRONIC transmission contributed to smooth and seamless gear changes, enhancing the overall driving experience. While not a sports car, the R-Class Long provided confident handling, aided by the 4MATIC all-wheel-drive system, which offered excellent traction in various weather conditions. Compared to the R 350 gasoline variant, the diesel offered significantly better fuel economy and a more relaxed driving experience due to the broader torque curve. Compared to higher-performance R-Class models like the R 500, the R 350 BlueTEC prioritized efficiency and comfort over outright speed. The gear ratios were tuned for fuel efficiency and relaxed highway cruising, rather than aggressive acceleration.

Equipment & Trim Levels

The R 350 V6 BlueTEC typically came well-equipped with standard features including leather upholstery, dual-zone automatic climate control, a premium audio system, and power-adjustable front seats. The R-Class was known for its luxurious interior appointments. Optional extras included a panoramic sunroof, rear-seat entertainment system, adaptive cruise control, and parking assist. The interior design was characterized by high-quality materials and a focus on comfort. Trim levels varied depending on the market, but generally offered increasing levels of luxury and technology. The long wheelbase version offered the option of a third-row seat, increasing seating capacity to seven, although this reduced cargo space when in use.

Chassis & Braking

The R-Class Long featured a robust chassis designed to handle the vehicle’s weight and provide a comfortable ride. The front suspension utilized a double wishbone design, while the rear employed an independent multi-link setup with a stabilizer bar. This configuration provided a good balance between ride comfort and handling. The braking system consisted of disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESP) were standard features, enhancing safety. The 4MATIC all-wheel-drive system distributed power between the front and rear axles as needed, optimizing traction and stability.

Market Reception & Comparison

The Mercedes-Benz R-Class, despite its innovative design and luxurious features, faced a lukewarm reception in the US market, where large station wagons were not particularly popular. Critics praised the vehicle’s spacious interior, comfortable ride, and fuel-efficient diesel engine, but its unconventional styling and high price point limited its appeal. The R 350 BlueTEC was generally viewed as the most sensible choice in the R-Class lineup, offering a good balance of performance, efficiency, and luxury. Compared to competitors like the Acura MDX and BMW X5, the R-Class offered a unique combination of space and refinement, but lacked the brand cachet and sporty driving dynamics of some rivals.

Legacy

The OM 642 engine family, including the OM 642.870 found in the R 350 BlueTEC, is known for its durability and reliability when properly maintained. While the R-Class itself was discontinued after the 2014 model year, examples of the R 350 BlueTEC continue to appear on the used car market. These vehicles are often sought after by buyers looking for a spacious, comfortable, and fuel-efficient luxury vehicle. Common maintenance items include regular servicing of the diesel particulate filter and ensuring the AdBlue system is functioning correctly. Overall, the R 350 V6 BlueTEC represents a unique and often overlooked chapter in Mercedes-Benz history, offering a blend of practicality, luxury, and efficiency that remains appealing to a niche group of buyers today.