The Mercedes-Benz C 250 CDI BlueEFFICIENCY 4MATIC, produced from 2011 to 2014, was a key variant within the W204 C-Class facelift range. Positioned as a mid-range offering, it combined a potent diesel engine with all-wheel drive and a sophisticated automatic transmission, appealing to buyers seeking a balance of performance, efficiency, and all-weather capability. This model represented Mercedes-Benz’s commitment to delivering refined luxury alongside increasingly stringent fuel economy standards, particularly within the European market where diesel engines held significant popularity. The W204 facelift, introduced in 2011, brought styling updates and technological enhancements to the C-Class, solidifying its position as a competitor to the BMW 3 Series and Audi A4.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W204, facelift 2011) |
| Type | C 250 CDI BlueEFFICIENCY (204 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 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) |
| Fuel consumption (extra urban) | 4.6-5 l/100 km (51.1 – 47 US mpg, 61.4 – 56.5 UK mpg, 21.7 – 20 km/l) |
| Fuel consumption (combined) | 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) |
| CO2 emissions | 144-152 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.1 sec |
| Acceleration 0 – 62 mph | 7.1 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.8 kg/Hp, 127.5 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 312.5 Nm/tonne |
| Power | 204 Hp @ 4200 rpm |
| Torque | 500 Nm @ 1600-1800 rpm (368.78 lb.-ft. @ 1600-1800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.912 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 99 mm (3.9 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1600 kg (3527.4 lbs.) |
| Max. weight | 2190 kg (4828.12 lbs.) |
| Max load | 590 kg (1300.73 lbs.) |
| Trunk (boot) space (minimum) | 475 l (16.77 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (with brakes) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Length | 4591 mm (180.75 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2008 mm (79.06 in.) |
| Height | 1447 mm (56.97 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1549 mm (60.98 in.) |
| Rear track | 1552 mm (61.1 in.) |
| Front overhang | 775 mm (30.51 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle | 10.84 m (35.56 ft.) |
| Drivetrain Architecture | All wheel drive (4×4). Internal Combustion engine. |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC PLUS |
Powertrain & Engine Architecture
The heart of the C 250 CDI BlueEFFICIENCY 4MATIC was the OM 651.912 2.1-liter inline-four diesel engine. This engine was a highly advanced design for its time, featuring common-rail direct injection and a sophisticated twin-turbocharger system. The twin-turbo setup, utilizing a smaller and a larger turbocharger, minimized turbo lag and provided a broad, flat torque curve. Peak torque of 500 Nm (368.78 lb.-ft.) was available from a low 1600-1800 rpm, providing strong acceleration in everyday driving situations. The engine also incorporated a particulate filter to reduce emissions, meeting Euro 5 standards. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, was specifically tuned to complement the engine’s characteristics. It offered smooth and quick shifts, contributing to both performance and fuel efficiency. The transmission’s gear ratios were optimized for both highway cruising and responsive acceleration.
Driving Characteristics
The C 250 CDI 4MATIC offered a refined and comfortable driving experience. The abundant low-end torque from the diesel engine meant that strong acceleration was readily available without needing to rev the engine high. While not as overtly sporty as some of its gasoline-powered siblings, the C 250 CDI provided ample power for overtaking and merging onto highways. The 7G-TRONIC PLUS transmission shifted seamlessly, and the 4MATIC all-wheel-drive system provided excellent traction in various weather conditions. Compared to the rear-wheel-drive C 250 models, the 4MATIC version offered increased stability and confidence, particularly on slippery surfaces. The automatic transmission, while convenient, didn’t offer the same level of driver engagement as a manual gearbox, and some enthusiasts preferred the more direct feel of the manual options.
Equipment & Trim Levels
The C 250 CDI BlueEFFICIENCY 4MATIC typically came standard with a generous array of features, including automatic climate control, a multi-function steering wheel, power windows and mirrors, and a high-quality audio system. Upholstery was typically a combination of fabric and Artico (Mercedes’ synthetic leather), with leather options available as an upgrade. Optional extras included a sunroof, navigation system, premium sound system, and various driver assistance features like parking sensors and adaptive cruise control. The interior design was typical of Mercedes-Benz, emphasizing luxury and build quality. The dashboard layout was clean and functional, with intuitive controls.
Chassis & Braking
The W204 C-Class featured a fully independent suspension system, with McPherson struts at the front and a multi-link setup at the rear. This provided a comfortable ride while maintaining good handling characteristics. The 4MATIC models typically had slightly stiffer spring rates to compensate for the added weight of the all-wheel-drive system. Braking was handled by ventilated discs on all four wheels, providing ample stopping power. Anti-lock brakes (ABS) and electronic stability control (ESP) were standard features, enhancing safety. The steering was a hydraulic power steering system, offering a precise and responsive feel.
Market Reception & Comparison
The C 250 CDI BlueEFFICIENCY 4MATIC was well-received by critics and consumers alike. It was praised for its fuel efficiency, strong performance, and comfortable ride. The all-wheel-drive system was a significant selling point for buyers in regions with inclement weather. Compared to the C 220 CDI, the C 250 CDI offered a noticeable power increase, while the C 350 offered more power but at the expense of fuel economy. The C 250 CDI struck a good balance between these two extremes. Reliability was generally good, although some owners reported issues with the diesel particulate filter and the complex turbocharger system.
Legacy
The OM 651 engine family, including the 2.1-liter variant found in the C 250 CDI, proved to be a durable and reliable powerplant. These engines are still commonly found on the used car market today, and with proper maintenance, they can provide many years of service. The W204 C-Class, as a whole, established a strong reputation for build quality and refinement. The C 250 CDI 4MATIC, in particular, remains a popular choice for buyers seeking a practical, efficient, and well-equipped luxury sedan. While newer C-Class models have introduced more advanced technology and features, the W204 C 250 CDI 4MATIC continues to offer a compelling value proposition in the used car market.
