The Mercedes-Benz C 250d 4MATIC Coupe (C205) was a diesel-powered variant of the C-Class Coupe produced between 2016 and 2018. Positioned as a mid-range offering within the C205 coupe lineup, it blended respectable performance with the fuel efficiency expected of a modern diesel engine, coupled with the added security of Mercedes-Benz’s 4MATIC all-wheel drive system. This model aimed to appeal to buyers seeking a premium coupe experience without the higher running costs associated with the more powerful gasoline variants.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Coupe (C205) |
| Type (Engine) | C 250d (204 Hp) 4MATIC 9G-TRONIC |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 5.8-5.4 l/100 km (40.6 – 43.6 US mpg, 48.7 – 52.3 UK mpg, 17.2 – 18.5 km/l) |
| Fuel consumption (extra urban) | 4.6-4.2 l/100 km (51.1 – 56 US mpg, 61.4 – 67.3 UK mpg, 21.7 – 23.8 km/l) |
| Fuel consumption (combined) | 5.0-4.6 l/100 km (47 – 51.1 US mpg, 56.5 – 61.4 UK mpg, 20 – 21.7 km/l) |
| CO2 emissions | 132-122 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.9 kg/Hp, 126.7 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 310.6 Nm/tonne |
| Power | 204 Hp @ 3800 rpm |
| Power per litre | 95.2 Hp/l |
| 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 | BiTurbo, Intercooler |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Kerb Weight | 1610 kg (3549.44 lbs.) |
| Max. weight | 2165 kg (4773.01 lbs.) |
| Max load | 555 kg (1223.57 lbs.) |
| Trunk (boot) space – minimum | 400 l (14.13 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| 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 | 2016 mm (79.37 in.) |
| Height | 1405 mm (55.31 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1563 mm (61.54 in.) |
| Rear (Back) track | 1546 mm (60.87 in.) |
| Front overhang | 790 mm (31.1 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 11.45 m (37.57 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 |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 17 |
INTRODUCTION
The C205 Mercedes-Benz C-Class Coupe, launched in 2015, represented a significant step forward in design and technology for the brand’s compact executive coupe. The C 250d 4MATIC, introduced in 2016 and continuing through 2018, was a key variant, offering a compelling blend of performance, efficiency, and all-weather capability. Built on the W205 C-Class sedan platform (internally designated as 1HX0/A3), the coupe distinguished itself with a more sporting profile and a focus on driver engagement. The C 250d 4MATIC aimed to provide a refined and practical grand touring experience for buyers who didn’t necessarily require the outright power of the C 300 or AMG models.
Powertrain & Engine Architecture
At the heart of the C 250d 4MATIC lay the OM 651.921, a 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay of the Mercedes-Benz lineup, known for its robust construction and fuel efficiency. The OM 651.921 featured a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A bi-turbocharger setup, utilizing a small and a large turbocharger, minimized turbo lag and provided a broad torque curve. The smaller turbocharger spooled up quickly at low engine speeds, while the larger turbo took over at higher RPMs for sustained power. The engine also incorporated an intercooler to further enhance performance by cooling the intake air. Paired with the engine was the 9G-TRONIC nine-speed automatic transmission. This transmission offered smooth and efficient gear changes, contributing to both fuel economy and driving comfort. The 9G-TRONIC’s wide gear ratio spread allowed the engine to operate within its optimal efficiency range more frequently.
Driving Characteristics
The C 250d 4MATIC offered a comfortable and refined driving experience. While not overtly sporty, the 204 horsepower and 368 lb-ft of torque provided ample power for everyday driving and confident overtaking maneuvers. The 0-60 mph time of around 6.6 seconds was respectable for a diesel-powered coupe. The 9G-TRONIC transmission contributed to smooth acceleration, and the 4MATIC all-wheel drive system provided excellent traction in various weather conditions. Compared to the rear-wheel drive C 250d, the 4MATIC version offered enhanced stability and control, particularly on slippery surfaces. The gear ratios were tuned for a balance between fuel efficiency and responsiveness, with lower gears providing quick acceleration and higher gears optimizing fuel economy during cruising. Compared to the more powerful C 300 coupe, the C 250d felt less urgent in its acceleration, but offered significantly better fuel economy.
Equipment & Trim Levels
The C 250d 4MATIC came standard with a generous array of features, reflecting its position as a premium coupe. Standard equipment typically included leather upholstery, automatic climate control, a high-resolution infotainment system with a central display screen, and a suite of safety features such as adaptive brake assist, collision prevention assist, and attention assist. Optional extras included a panoramic sunroof, premium sound system, navigation system, and various driver assistance packages. Interior trim options allowed buyers to personalize the cabin with different wood or aluminum accents. The dashboard layout was modern and elegant, with a focus on intuitive controls and a high-quality feel.
Chassis & Braking
The C 250d 4MATIC featured a sophisticated chassis designed to balance comfort and handling. The front suspension utilized an independent multi-link setup, while the rear also employed an independent multi-link design. This configuration provided a smooth and controlled ride, even on uneven surfaces. The 4MATIC all-wheel drive system distributed power between the front and rear axles as needed, optimizing traction and stability. Braking duties were handled by ventilated discs at the front and solid discs at the rear. The anti-lock braking system (ABS) and electronic stability program (ESP) provided enhanced safety and control during braking maneuvers.
Market Reception & Comparison
The C 250d 4MATIC was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. The 4MATIC all-wheel drive system was also seen as a valuable asset, particularly in regions with inclement weather. Compared to the C 300 coupe, the C 250d offered a more economical option without sacrificing too much in terms of performance or luxury. However, some critics noted that the diesel engine could be somewhat noisy compared to the gasoline alternatives. Fuel economy figures consistently demonstrated the C 250d’s advantage over its gasoline-powered siblings, making it an attractive choice for drivers who prioritized efficiency.
Legacy
The OM 651 engine family, including the version used in the C 250d 4MATIC, has proven to be remarkably durable and reliable. With proper maintenance, these engines can accumulate high mileage without major issues. On the used car market, the C 250d 4MATIC remains a popular choice for buyers seeking a stylish and efficient coupe. Its combination of luxury, performance, and all-weather capability continues to appeal to a wide range of drivers. While newer models offer more advanced technology and features, the C 250d 4MATIC represents a well-rounded and dependable option in the used car segment.
