2019-2021 Mercedes-Benz CLS coupe (C257) CLS 220d (194 Hp) 9G-TRONIC

Technical Specifications

The Mercedes-Benz CLS 220d (C257), produced from 2019 to 2021, represents a compelling entry point into the CLS “four-door coupe” lineage. Positioned as a diesel-powered variant within the third generation (C257) CLS, it aimed to deliver a blend of luxury, efficiency, and performance. This model occupied the lower-mid range of the CLS lineup, offering a more economical alternative to the higher-powered gasoline engines like the CLS 350 or the AMG variants. It was primarily marketed towards European consumers seeking a stylish and comfortable grand tourer with lower running costs, though it was also available in select international markets.

Powertrain & Engine Architecture

The heart of the CLS 220d is the OM 654.920, a 2.0-liter inline-four cylinder diesel engine. This engine is a highly advanced design, featuring a steel piston block, aluminum cylinder head, and a two-stage turbocharging system. The two-stage turbocharging, utilizing a small and a large turbocharger, provides both quick response at low engine speeds and sustained power at higher RPMs. Fuel is delivered via a common-rail direct injection system operating at extremely high pressures (up to 2,700 bar) for optimized combustion. The engine also incorporates variable valve timing (both intake and exhaust) and a cooled exhaust gas recirculation (EGR) system to reduce emissions. The 9G-TRONIC nine-speed automatic transmission is standard, offering smooth and efficient gear changes. This transmission is known for its wide gear ratio spread, contributing to both fuel economy and relaxed cruising. The transmission features a torque converter lockup clutch that engages in most gears to minimize slippage and improve efficiency.

Driving Characteristics

The CLS 220d, with its 194 horsepower and 400 Nm (295 lb-ft) of torque, delivers respectable performance. Acceleration from 0 to 100 km/h (0-62 mph) takes around 7.5 seconds. While not overtly sporty, the engine provides ample torque for effortless overtaking and comfortable highway cruising. The 9G-TRONIC transmission is well-matched to the engine, providing smooth and timely gear changes. Compared to the more powerful CLS 350d or the AMG variants, the 220d feels less urgent in its acceleration. However, the lower weight over the front axle, due to the smaller engine, contributes to a more balanced feel in corners. The gear ratios are tuned for fuel efficiency, meaning the engine doesn’t always feel as responsive as some performance-oriented transmissions. The focus is on providing a refined and comfortable driving experience rather than outright speed.

Equipment & Trim Levels

The CLS 220d typically came well-equipped, even in base trim. Standard features included Mercedes-Benz’s MBUX infotainment system with a dual 12.3-inch display screen, leather upholstery, automatic climate control, and a comprehensive suite of safety features including adaptive cruise control, lane keeping assist, and automatic emergency braking. Optional extras included a premium sound system, panoramic sunroof, head-up display, and various interior trim options. The interior design mirrored that of the E-Class, with a focus on luxury and technology. The standard upholstery was typically Artico leather (a high-quality synthetic leather), with genuine leather available as an upgrade. The dashboard featured turbine-style air vents and ambient lighting, creating a sophisticated atmosphere.

Chassis & Braking

The CLS 220d utilizes an independent multi-link suspension at both the front and rear axles. This suspension setup provides a comfortable ride quality while maintaining good handling characteristics. The suspension is tuned to prioritize comfort over outright sportiness, but it still offers a secure and planted feel in corners. The braking system consists of ventilated disc brakes at all four wheels. ABS (Anti-lock Braking System), Electronic Stability Program (ESP), and Brake Assist are standard safety features. The CLS 220d typically came equipped with 18-inch alloy wheels as standard, with larger wheel sizes available as an option.

Market Reception & Comparison

The CLS 220d was generally well-received by automotive critics. It was praised for its stylish design, comfortable ride, and fuel efficiency. However, some reviewers noted that the engine lacked the outright performance of the higher-powered variants. Compared to the CLS 350d, the 220d offered significantly better fuel economy but at the expense of acceleration. The 220d appealed to buyers who prioritized efficiency and comfort over outright performance. It also offered a more affordable entry point into the CLS range, making it accessible to a wider range of customers. Its fuel economy figures were competitive with other luxury coupes in its class.

Legacy

The OM 654 engine family, used in the CLS 220d, has proven to be a reliable and durable powertrain. While long-term reliability data is still accumulating, early reports suggest that the engine is generally robust. On the used car market, the CLS 220d represents a good value proposition for buyers seeking a stylish and comfortable luxury coupe with reasonable running costs. However, potential buyers should be aware of the potential maintenance costs associated with a complex diesel engine and the importance of regular servicing. The CLS 220d remains a desirable option for those seeking a blend of luxury, efficiency, and style in a four-door coupe format.