2014-2017 Mercedes-Benz CLS coupe (C218 facelift ) CLS 250 BlueTEC (204 Hp) 4MATIC 7G-TRONIC PLUS

The Mercedes-Benz CLS 250 BlueTEC 4MATIC, produced from July 2014 to December 2017, represents a compelling blend of luxury, efficiency, and performance within the C218 facelift generation of the CLS coupe. Positioned as a mid-range offering, this variant aimed to provide a more economical alternative to the higher-performance CLS models while still delivering the sophisticated styling and features expected of the Mercedes-Benz brand. It was primarily marketed in Europe and other regions where diesel engines were favored, offering a refined driving experience and impressive fuel economy for a vehicle of its size and class. The CLS 250 BlueTEC 4MATIC utilized a 2.1-liter turbocharged diesel engine paired with a 7G-TRONIC PLUS automatic transmission and Mercedes’ 4MATIC all-wheel-drive system.

Technical Specifications

Powertrain & Engine Architecture

The heart of the CLS 250 BlueTEC 4MATIC is the OM 651.924 2.1-liter inline-four cylinder diesel engine. This engine is a highly refined unit, featuring common-rail direct injection and a sophisticated two-stage turbocharging system. The first turbocharger is a variable geometry turbine (VGT) that provides boost at lower engine speeds, minimizing turbo lag and improving responsiveness. The second, smaller turbocharger, kicks in at higher RPMs to maintain power output. This bi-turbo setup contributes to the engine’s impressive torque curve, delivering 500 Nm (368.78 lb-ft) between 1600 and 1800 rpm. The engine also incorporates advanced technologies like piezo injectors and a cooled exhaust gas recirculation (EGR) system to reduce emissions. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, is known for its smooth and efficient gear changes. It features a torque converter lockup clutch that engages in most gears, improving fuel economy and reducing slippage. The 4MATIC all-wheel-drive system operates full-time, distributing power between the front and rear axles as needed to maximize traction.

Driving Characteristics

The CLS 250 BlueTEC 4MATIC offers a comfortable and refined driving experience. While not as overtly sporty as some of its higher-powered siblings, the 204 hp engine provides adequate performance for everyday driving and highway cruising. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 7.9 seconds. The 7G-TRONIC transmission is well-matched to the engine, providing smooth and timely gear changes. The all-wheel-drive system enhances stability and grip, particularly in adverse weather conditions. Compared to the CLS 350 or CLS 550 models, the 250 BlueTEC offers a more relaxed and fuel-efficient driving experience. The gear ratios are optimized for fuel economy rather than outright acceleration. The engine’s strong low-end torque makes it easy to navigate city traffic and overtake slower vehicles without requiring frequent downshifts.

Equipment & Trim Levels

The CLS 250 BlueTEC 4MATIC typically came well-equipped as standard. Common features included leather upholstery, automatic climate control, a premium sound system, and a comprehensive suite of safety features such as ABS, ESP, and multiple airbags. The infotainment system included a central display screen with navigation, Bluetooth connectivity, and USB ports. Optional extras included features like a panoramic sunroof, adaptive cruise control, lane keeping assist, and a more powerful audio system. Interior trim options varied, with choices in wood veneers and aluminum accents. The standard seats provided good support and comfort, and optional sport seats were available for a more aggressive look and feel.

Chassis & Braking

The CLS 250 BlueTEC 4MATIC features a sophisticated suspension system designed to balance comfort and handling. The front suspension utilizes a multi-link setup with coil springs, while the rear suspension employs a multi-link independent suspension. Air suspension was available as an optional extra, providing an even smoother ride and the ability to adjust the ride height. The braking system consists of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) are standard features, enhancing safety and control. The steering is a rack-and-pinion system with electric power assistance, providing precise and responsive steering feel.

Market Reception & Comparison

The CLS 250 BlueTEC 4MATIC was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that the engine lacked the outright performance of the more powerful CLS models. Compared to the CLS 350, the 250 BlueTEC offered significantly better fuel economy but less horsepower and torque. The CLS 250 BlueTEC was often seen as a sensible choice for buyers who prioritized efficiency and comfort over outright performance. Its fuel economy figures of around 5.3 l/100 km (44.4 US mpg) made it an attractive option for those who frequently drive long distances.

Legacy

The OM 651 engine family, including the 2.1-liter unit found in the CLS 250 BlueTEC, has a reputation for reliability and durability. With proper maintenance, these engines can accumulate high mileage without major issues. The 7G-TRONIC transmission is also generally reliable, although regular fluid changes are essential. In the used car market, the CLS 250 BlueTEC 4MATIC represents a good value proposition, offering a luxurious and well-equipped coupe at a relatively affordable price point. However, potential buyers should be aware of the potential maintenance costs associated with a diesel engine, such as diesel particulate filter (DPF) regeneration and AdBlue refills. Overall, the CLS 250 BlueTEC 4MATIC remains a desirable and capable vehicle for those seeking a blend of luxury, efficiency, and all-weather capability.