The Mercedes-Benz CLS 350 CDI 4MATIC, produced between August 2011 and September 2014, represents a compelling blend of luxury, performance, and efficiency within the C218 CLS coupe generation. Positioned as a mid-range offering in the CLS lineup, it catered to buyers seeking a sophisticated grand tourer with the added security and capability of all-wheel drive. This variant combined a potent turbocharged diesel engine with Mercedes-Benz’s smooth-shifting 7G-TRONIC PLUS automatic transmission, creating a vehicle designed for long-distance comfort and confident handling. The CLS, initially conceived as a four-door coupe, aimed to bridge the gap between traditional sedans and sporty coupes, establishing a new segment in the luxury car market.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLS |
| Generation | CLS coupe (C218) |
| Type | CLS 350 CDI V6 (265 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | August, 2011 |
| End of production | September, 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (urban) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 km/l) |
| Fuel consumption (extra urban) | 5.6-5.8 l/100 km (42 – 40.6 US mpg, 50.4 – 48.7 UK mpg, 17.9 – 17.2 km/l) |
| Fuel consumption (combined) | 6.7-6.9 l/100 km (35.1 – 34.1 US mpg, 42.2 – 40.9 UK mpg, 14.9 – 14.5 km/l) |
| CO2 emissions | 177-181 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.4 sec |
| Acceleration 0 – 62 mph | 6.4 sec |
| Acceleration 0 – 60 mph | 6.1 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.8 kg/Hp, 147.2 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 344.4 Nm/tonne |
| Power | 265 Hp @ 3800 rpm |
| Torque | 620 Nm @ 1600-2400 rpm (457.29 lb.-ft. @ 1600-2400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.858 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 12.3 l (13 US qt | 10.82 UK qt) |
| Kerb Weight | 1800 kg (3968.32 lbs.) |
| Max. weight | 2360 kg (5202.91 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space (minimum) | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 4940 mm (194.49 in.) |
| Width | 1881 mm (74.06 in.) |
| Width including mirrors | 2075 mm (81.69 in.) |
| Height | 1416 mm (55.75 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1594 mm (62.76 in.) |
| Rear track | 1626 mm (64.02 in.) |
| Front overhang | 901 mm (35.47 in.) |
| Rear overhang | 1165 mm (45.87 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 11.27 m (36.98 ft.) |
| Drivetrain | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC PLUS |
Powertrain & Engine Architecture
The heart of the CLS 350 CDI 4MATIC is the OM 642.858 3.0-liter V6 diesel engine. This engine, a mainstay of 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 pressure for optimized combustion. A variable geometry turbocharger, coupled with an intercooler, provides ample boost across a wide rev range, contributing to the engine’s strong torque output. The engine also incorporates a DOHC (Double Overhead Camshaft) valvetrain, enhancing volumetric efficiency. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, is renowned for its smooth and responsive shifts. It features a torque converter lock-up clutch that engages in most driving situations, improving fuel efficiency. The 4MATIC all-wheel-drive system distributes power between the front and rear axles, providing enhanced traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The CLS 350 CDI 4MATIC delivers a refined and effortless driving experience. The 620 Nm (457 lb-ft) of torque, available from a low 1600 rpm, provides strong acceleration in everyday driving situations. While not as overtly sporty as some of its gasoline-powered siblings, the diesel engine’s ample torque allows for confident overtaking maneuvers. The 7G-TRONIC transmission contributes to a seamless power delivery, with well-chosen gear ratios that keep the engine in its optimal power band. The 4MATIC system provides a secure and planted feel, inspiring confidence on both dry and wet roads. Compared to the more powerful CLS 550 models, the 350 CDI prioritizes fuel efficiency and relaxed cruising over outright performance. The manual transmission options available on other CLS models offered a more engaging driving experience, but at the expense of the 350 CDI’s inherent smoothness and ease of use.
Equipment & Trim Levels
The CLS 350 CDI 4MATIC typically came well-equipped as standard. Key features included leather upholstery, automatic climate control, a premium audio system, and a host of safety features such as ABS, ESP, and multiple airbags. Optional extras included a panoramic sunroof, upgraded leather packages, a driver assistance package (including adaptive cruise control and lane keeping assist), and a more powerful audio system. The interior design emphasized luxury and sophistication, with high-quality materials and a modern dashboard layout. The standard dashboard configuration featured analog gauges with a central multi-function display.
Chassis & Braking
The CLS 350 CDI 4MATIC utilizes a sophisticated suspension system designed to balance comfort and handling. The front suspension features a multi-link setup with coil springs, while the rear suspension employs an independent multi-link spring suspension. An optional air suspension system was available, providing adjustable ride height and further enhancing ride comfort. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) are standard features, enhancing safety and control. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The CLS 350 CDI 4MATIC was generally well-received by automotive critics. It was praised for its refined driving experience, luxurious interior, and impressive fuel economy. The diesel engine was noted for its strong torque and smooth operation. Compared to the gasoline-powered CLS 550, the 350 CDI offered a more practical and economical option for buyers who prioritized fuel efficiency and long-distance comfort. The 350 CDI also offered a compelling alternative to other luxury coupes and sedans in its class, such as the BMW 6 Series and Audi A7.
Legacy
The OM 642 engine family, including the OM 642.858 found in the CLS 350 CDI, is known for its durability and reliability. 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 350 CDI 4MATIC represents a good value proposition, offering a luxurious and capable grand tourer at a relatively affordable price point. However, potential buyers should be aware of the potential maintenance costs associated with a diesel engine and the complexity of the vehicle’s electronic systems. The CLS 350 CDI 4MATIC remains a desirable vehicle for those seeking a blend of luxury, performance, and efficiency in a stylish four-door coupe package.
