The Mercedes-Benz C 250d 4MATIC, produced between 2016 and 2018, was a key variant within the W205 C-Class range. Positioned as a mid-range offering, it combined a potent diesel engine with all-wheel drive and a sophisticated nine-speed automatic transmission. This model aimed to deliver a balance of performance, efficiency, and all-weather capability, appealing to buyers seeking a premium compact executive car. It was primarily marketed in Europe and other regions where diesel engines held significant market share, offering a compelling alternative to gasoline-powered C-Class models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W205) |
| Type | C 250d (204 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.8-5.4 l/100 km (40.6 – 43.6 US mpg) |
| Fuel consumption (extra urban) | 4.2-4.6 l/100 km (56 – 51.1 US mpg) |
| Fuel consumption (combined) | 5.0-4.6 l/100 km (47 – 51.1 US mpg) |
| CO2 emissions | 122-132 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.8 sec |
| Acceleration 0 – 62 mph | 6.8 sec |
| Acceleration 0 – 60 mph | 6.5 sec |
| Maximum speed | 242 km/h (150.37 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.8 kg/Hp, 128.7 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 315.5 Nm/tonne |
| Power | 204 Hp @ 3800 rpm |
| Torque | 500 Nm @ 1600-1800 rpm (368.78 lb.-ft. @ 1600-1800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.921 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 16.2:1 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-Turbo, Intercooler |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Kerb Weight | 1585 kg (3494.33 lbs.) |
| Max. weight | 2225 kg (4905.29 lbs.) |
| Max load | 640 kg (1410.96 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4686 mm (184.49 in.) |
| Width | 1810 mm (71.26 in.) |
| Width including mirrors | 2020 mm (79.53 in.) |
| Height | 1442 mm (56.77 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1588 mm (62.52 in.) |
| Rear (Back) track | 1570 mm (61.81 in.) |
| Ride height (ground clearance) | 92 mm (3.62 in.) |
| Minimum turning circle (turning diameter) | 11.22 m (36.81 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 225/50 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The C 250d 4MATIC utilized the OM 651.921, a 2.1-liter inline-four diesel engine. This engine was a mainstay in the Mercedes-Benz lineup, known for its robust construction and efficiency. The OM 651 featured a cast iron block and aluminum cylinder head, incorporating common rail direct injection and a sophisticated twin-turbocharger system. This setup allowed for a broad torque curve, delivering peak torque of 500 Nm (368.78 lb-ft) between 1600 and 1800 rpm. The engine also benefited from an intercooler to enhance intake air density. The 9G-TRONIC nine-speed automatic transmission was a key component, offering smooth shifts and contributing to improved fuel economy. This transmission featured a wide gear ratio spread, allowing the engine to operate in its optimal efficiency range more frequently.
Driving Characteristics
The C 250d 4MATIC provided a refined and comfortable driving experience. The 204 horsepower and substantial torque allowed for brisk acceleration, with a 0-60 mph time of around 6.5 seconds. While not as overtly sporty as some of the higher-powered C-Class variants, the C 250d offered ample power for everyday driving and highway cruising. The 9G-TRONIC transmission contributed to smooth gear changes, and the 4MATIC all-wheel-drive system provided enhanced traction in adverse weather conditions. Compared to the rear-wheel-drive C 250, the 4MATIC version offered increased stability and confidence, particularly on slippery surfaces. The gear ratios were tuned for a balance of acceleration and fuel efficiency, with higher gears designed for relaxed highway cruising.
Equipment & Trim Levels
The C 250d 4MATIC typically came well-equipped, reflecting its mid-range positioning. Standard features often included automatic climate control, a high-resolution infotainment system with a central display screen, and premium upholstery. Interior trim options included wood, aluminum, and carbon fiber accents. Optional extras included a panoramic sunroof, upgraded sound system, and advanced driver-assistance systems such as lane keeping assist and adaptive cruise control. The standard seats were comfortable and supportive, and leather upholstery was a popular option. The dashboard layout was modern and elegant, with a focus on user-friendliness.
Chassis & Braking
The W205 C-Class featured a sophisticated chassis design, with a four-link front suspension and a multi-link rear suspension. This setup provided a good balance of ride comfort and handling precision. The C 250d 4MATIC typically came equipped with ventilated front disc brakes and solid rear discs. The anti-lock braking system (ABS) and electronic stability program (ESP) were standard features, enhancing safety and control. The 4MATIC all-wheel-drive system distributed power between the front and rear axles as needed, optimizing traction and stability. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The C 250d 4MATIC was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and all-weather capability. Fuel economy was a strong point, with combined fuel consumption figures ranging from 47 to 51.1 US mpg. Compared to the C 300 (gasoline-powered), the C 250d offered better fuel economy and a broader torque curve, making it a more practical choice for drivers who covered long distances. However, the C 300 provided quicker acceleration and a more sporty driving experience. The C 250d also compared favorably to competitors such as the BMW 320d xDrive and Audi A4 2.0 TDI quattro, offering a similar blend of performance, efficiency, and luxury.
Legacy
The OM 651 engine, used in the C 250d 4MATIC, has proven to be a durable and reliable powerplant. While diesel engines are subject to stricter emissions regulations, the OM 651 remains a respected engine in the used car market. The 9G-TRONIC transmission has also demonstrated good long-term reliability. C 250d 4MATIC models from this era are generally considered to be a good value proposition, offering a premium driving experience at a reasonable price. Regular maintenance, including oil changes and filter replacements, is crucial for ensuring the longevity of this powertrain. The combination of all-wheel drive and a fuel-efficient diesel engine continues to appeal to buyers seeking a practical and capable compact executive car.
