2013-2016 Mercedes-Benz S-class Long (V222) S 350 BlueTEC V6 (258 Hp) 7G-TRONIC PLUS

The Mercedes-Benz S 350 BlueTEC Long (V222) represents a significant iteration of the flagship S-Class sedan, produced from May 2013 to February 2016. Positioned as a diesel-powered variant within the extended-wheelbase V222 generation, it catered to markets prioritizing fuel efficiency and long-distance comfort without sacrificing the luxury and technological sophistication synonymous with the S-Class nameplate. The “Long” designation indicates an extended wheelbase, providing increased rear passenger legroom, a feature particularly valued in markets like China and Europe. This model aimed to bridge the gap between the entry-level S 300 and the more powerful S 500, offering a refined driving experience with a focus on torque and economy.

Technical Specifications

Powertrain & Engine Architecture

The S 350 BlueTEC Long utilized the OM 642.861 3.0-liter V6 diesel engine. This engine, a mainstay in the Mercedes-Benz lineup, is characterized by its robust construction and sophisticated technology. It features a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A single turbocharger with an intercooler provides forced induction, boosting power and torque. The engine also incorporates a diesel particulate filter (DPF) and a selective catalytic reduction (SCR) system (using AdBlue) to minimize emissions and meet stringent Euro 6 standards. The 7G-TRONIC PLUS seven-speed automatic transmission, known for its smooth and responsive shifts, was standard. This transmission features a torque converter lock-up clutch to improve efficiency and a wide range of gear ratios optimized for both cruising and acceleration.

Driving Characteristics

The S 350 BlueTEC Long prioritized a relaxed and refined driving experience. With 258 horsepower and a substantial 457 lb-ft of torque, it offered ample power for effortless highway cruising and confident overtaking. While not as overtly sporty as the S 500 or AMG variants, the diesel engine’s low-end torque provided strong acceleration from a standstill and in everyday driving situations. The 7G-TRONIC PLUS transmission contributed to smooth gear changes, and the long wheelbase and air suspension ensured a comfortable ride, even on imperfect road surfaces. Compared to the gasoline-powered S 350, the BlueTEC offered significantly better fuel economy, making it a popular choice for high-mileage drivers. The automatic transmission, while convenient, didn’t offer the same level of driver engagement as the available manual options in other S-Class models.

Equipment & Trim Levels

The S 350 BlueTEC Long came standard with a comprehensive array of luxury features. These included leather upholstery, power-adjustable heated and ventilated front seats, a premium sound system, a large infotainment display with navigation, and a suite of driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included rear-seat entertainment, massaging seats, a panoramic sunroof, and various interior trim upgrades. The interior design emphasized elegance and sophistication, with high-quality materials and meticulous attention to detail. Dashboard configuration was consistent across the V222 range, featuring a dual-screen display and a centrally-mounted command controller.

Chassis & Braking

The S-Class Long utilized an independent multi-link suspension system at both the front and rear, enhanced by Mercedes-Benz’s AIRMATIC air suspension. This system automatically adjusted the suspension damping and ride height to optimize comfort and handling. The S 350 BlueTEC Long was equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard safety features. The suspension was tuned to prioritize ride comfort, with stabilizer bars helping to minimize body roll during cornering. Due to the vehicle’s weight, the rear brakes played a crucial role in providing balanced stopping performance.

Market Reception & Comparison

The S 350 BlueTEC Long was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and luxurious interior. Reviewers noted that the diesel engine provided ample power for most driving situations, although it lacked the outright performance of the gasoline-powered S 500. Compared to the S 300, the S 350 BlueTEC offered a significant power upgrade and a more refined driving experience. Against the S 500, it traded some performance for improved fuel economy and lower running costs. The diesel engine’s complexity and the potential for DPF-related issues were occasionally cited as potential drawbacks.

Legacy

The OM 642 engine family, including the OM 642.861 found in the S 350 BlueTEC, has proven to be remarkably durable and reliable when properly maintained. While the diesel particulate filter and SCR system require periodic servicing, the engine itself is known for its longevity. In the used car market, the S 350 BlueTEC Long remains a desirable option for buyers seeking a luxurious and fuel-efficient sedan. However, potential buyers should be aware of the maintenance requirements associated with the diesel emissions system and ensure that the vehicle has been properly serviced. The V222 S-Class, as a whole, is considered a technological milestone, and the S 350 BlueTEC Long represents a compelling blend of luxury, efficiency, and long-distance comfort.