The Mercedes-Benz CLS 350d 4MATIC, produced from April 2015 to December 2017, represents a compelling blend of luxury, performance, and efficiency within the C218 facelift generation of the CLS coupe. Positioned as a mid-range offering in the CLS lineup, it catered to buyers seeking a sophisticated four-door coupe experience with the added security and capability of all-wheel drive. This variant distinguished itself with its potent V6 diesel engine paired with a sophisticated 9-speed automatic transmission, offering a refined driving experience and respectable fuel economy. The C218 facelift brought updated styling cues and technological enhancements to the CLS, solidifying its position as a desirable grand tourer.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLS |
| Generation | CLS coupe (C218 facelift, 2014) |
| Type (Engine) | CLS 350d V6 (258 Hp) 4MATIC 9G-TRONIC |
| Start of production | April, 2015 |
| End of production | December, 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (economy) – urban (NEDC) | 7.2-7.3 l/100 km (32.7 – 32.2 US mpg, 39.2 – 38.7 UK mpg, 13.9 – 13.7 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 5.4-5.7 l/100 km (43.6 – 41.3 US mpg, 52.3 – 49.6 UK mpg, 18.5 – 17.5 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 5.9-6.2 l/100 km (39.9 – 37.9 US mpg, 47.9 – 45.6 UK mpg, 16.9 – 16.1 km/l) |
| CO2 emissions (NEDC) | 159-166 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 6 |
| Weight-to-power ratio | 7.1 kg/Hp, 141.8 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 340.7 Nm/tonne |
| Power | 258 Hp @ 3400 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 | 10.8 l (11.41 US qt | 9.5 UK qt) |
| Kerb Weight | 1820 kg (4012.41 lbs.) |
| Max. weight | 2380 kg (5247 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 475 l (16.77 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| AdBlue tank | 25.5 l (6.74 US gal | 5.61 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 4937 mm (194.37 in.) |
| Width | 1881 mm (74.06 in.) |
| Width including mirrors | 2075 mm (81.69 in.) |
| Height | 1418 mm (55.83 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1596 mm (62.83 in.) |
| Rear (Back) track | 1626 mm (64.02 in.) |
| Front overhang | 898 mm (35.35 in.) |
| Rear overhang | 1165 mm (45.87 in.) |
| Minimum turning circle (turning diameter) | 11.5 m (37.73 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
At the heart of the CLS 350d 4MATIC lies the OM 642.858 3.0-liter V6 diesel engine. This engine, a mainstay in the Mercedes-Benz lineup, is renowned for its robust construction and refined power delivery. It features a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine utilizes a single turbocharger with an intercooler to boost power and efficiency. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, contributing to its strong torque output. The 9G-TRONIC nine-speed automatic transmission is a key component, offering smooth and efficient gear changes. This transmission is designed to maximize fuel economy and provide a comfortable driving experience. It features a wide gear ratio spread, allowing the engine to operate in its optimal power band more frequently.
Driving Characteristics
The CLS 350d 4MATIC delivers a composed and refined 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 350d offers ample power for confident overtaking and highway cruising. The 9G-TRONIC transmission contributes to a seamless power delivery, minimizing shift shock and enhancing comfort. Compared to the CLS 550 with its twin-turbo V8, the 350d prioritizes fuel efficiency and torque over outright horsepower. Against the CLS 220d, the 350d offers a significant performance upgrade, justifying its position as a mid-range offering.
Equipment & Trim Levels
The CLS 350d 4MATIC typically came well-equipped as standard. Features included leather upholstery, automatic climate control, a high-resolution infotainment system with navigation, and a suite of safety technologies such as adaptive cruise control and lane-keeping assist. Optional extras included a premium sound system, panoramic sunroof, and various interior trim upgrades. The interior design emphasized luxury and sophistication, with high-quality materials and meticulous attention to detail. The dashboard layout was clean and modern, with intuitive controls and a driver-focused design.
Chassis & Braking
The CLS 350d 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 employs an independent multi-link suspension. Air suspension was often available as an option, further enhancing ride quality and allowing for adjustable ride height. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The 4MATIC all-wheel-drive system distributes power between the front and rear axles as needed, enhancing traction and stability in various driving conditions.
Market Reception & Comparison
The CLS 350d 4MATIC was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and luxurious interior. Fuel economy was also a strong point, making it an attractive option for drivers who prioritize efficiency. Compared to the more powerful CLS 550, the 350d offered a more sensible balance of performance and running costs. Its reliability proved to be generally good, although diesel particulate filter (DPF) issues could arise with infrequent long-distance driving.
Legacy
The CLS 350d 4MATIC remains a desirable used car option today. Its combination of luxury, performance, and efficiency continues to appeal to buyers seeking a sophisticated grand tourer. The OM 642 engine is known for its durability, although regular maintenance is crucial to ensure long-term reliability. The 9G-TRONIC transmission has also proven to be a reliable unit. However, potential buyers should be aware of the potential for DPF issues and ensure that the vehicle has been properly maintained. The CLS 350d 4MATIC represents a refined and capable iteration of the CLS coupe, offering a compelling blend of German engineering and luxurious appointments.
