The Mercedes-Benz C-Class T-modell (S204) C 220 CDI BlueEFFICIENCY, produced from 2009 to 2011, represented a compelling blend of practicality, efficiency, and luxury within the compact executive estate car segment. Positioned as a mid-range offering in the S204 series – the estate variant of the third-generation C-Class – it catered to buyers seeking a diesel-powered wagon with a focus on fuel economy and reasonable performance. This model was a key part of Mercedes-Benz’s strategy to offer a diverse range of C-Class options, appealing to both private buyers and fleet customers across Europe and other markets.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class T-modell (S204) |
| Type (Engine) | C 220 CDI BlueEFFICIENCY (170 Hp) |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.3-6.6 l/100 km (37.3 – 35.6 US mpg, 44.8 – 42.8 UK mpg, 15.9 – 15.2 km/l) |
| Fuel consumption (extra urban) | 4.1-4.7 l/100 km (57.4 – 50 US mpg, 68.9 – 60.1 UK mpg, 24.4 – 21.3 km/l) |
| Fuel consumption (combined) | 4.9-5.4 l/100 km (48 – 43.6 US mpg, 57.6 – 52.3 UK mpg, 20.4 – 18.5 km/l) |
| CO2 emissions | 130-144 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.8 sec |
| Acceleration 0 – 62 mph | 8.8 sec |
| Acceleration 0 – 60 mph | 8.4 sec |
| Maximum speed | 219 km/h (136.08 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.4 kg/Hp, 106.9 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 251.6 Nm/tonne |
| Power | 170 Hp @ 3000-4200 rpm |
| Power per litre | 79.3 Hp/l |
| Torque | 400 Nm @ 1400-2800 rpm (295.02 lb.-ft. @ 1400-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.911 |
| 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 | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1590 kg (3505.35 lbs.) |
| Max. weight | 2205 kg (4861.19 lbs.) |
| Max load | 615 kg (1355.84 lbs.) |
| Trunk (boot) space – minimum | 485 l (17.13 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4596 mm (180.94 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2009 mm (79.09 in.) |
| Height | 1459 mm (57.44 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1541 mm (60.67 in.) |
| Rear track | 1544 mm (60.79 in.) |
| Front overhang | 765 mm (30.12 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Minimum turning circle | 10.84 m (35.56 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears | 6 |
| Type of gearbox | Manual transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 205/55 R16 |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The C 220 CDI BlueEFFICIENCY was powered by the OM651.911, a 2.1-liter inline-four cylinder diesel engine. This engine was a cornerstone of Mercedes-Benz’s diesel offerings during this period, known for its robust construction and efficiency. The ‘BlueEFFICIENCY’ designation indicated the inclusion of various fuel-saving technologies, including optimized aerodynamics, reduced rolling resistance tires, and a revised engine management system. The engine utilized a common rail direct injection system, delivering fuel at extremely high pressure for improved combustion and reduced emissions. A bi-turbocharger setup, featuring a small, low-pressure turbocharger and a larger, high-pressure turbocharger, provided a broad torque curve and minimized turbo lag. The engine featured a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine was longitudinally mounted in the front of the vehicle, driving the rear wheels. The six-speed manual transmission was standard, offering precise gear changes and contributing to the car’s overall efficiency.
Driving Characteristics
The C 220 CDI BlueEFFICIENCY offered a comfortable and refined driving experience, prioritizing fuel economy and relaxed cruising over outright performance. With 170 horsepower and 400 Nm (295 lb-ft) of torque, acceleration from 0-60 mph took approximately 8.4 seconds, which was adequate for everyday driving but noticeably slower than the more powerful C 350 or C 63 AMG models. The strength of this engine lay in its mid-range torque, providing ample pulling power for overtaking and effortless highway cruising. The manual transmission, while engaging, had relatively long throws compared to some competitors. The suspension setup, tuned for comfort, absorbed bumps and imperfections in the road well, but didn’t offer the same level of sporting agility as the optional sport suspension. The rear-wheel-drive configuration provided a balanced feel, although traction could be limited in slippery conditions.
Equipment & Trim Levels
The C 220 CDI BlueEFFICIENCY typically came equipped with a respectable level of standard features. These included automatic climate control, a multi-function steering wheel, power windows and mirrors, and a basic audio system. Interior upholstery was typically a cloth or Artico leatherette combination. Optional extras included a sunroof, leather upholstery, a premium audio system, navigation system, and parking sensors. The ‘BlueEFFICIENCY’ package itself didn’t significantly alter the interior trim, but focused on aerodynamic enhancements and engine management tweaks. The overall interior design was typical of Mercedes-Benz at the time – functional, well-built, and exuding a sense of understated luxury.
Chassis & Braking
The S204 C-Class estate utilized a MacPherson strut front suspension and a multi-link independent rear suspension. This setup provided a good balance between ride comfort and handling. The C 220 CDI, being a mid-range model, typically featured smaller diameter alloy wheels (often 16-inch) and tires compared to the higher-performance variants. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard, providing enhanced stopping power and stability. The steering was a hydraulic power-assisted rack and pinion system, offering precise and responsive control.
Market Reception & Comparison
The C 220 CDI BlueEFFICIENCY was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. However, some reviewers noted that the performance was not as exhilarating as some of its rivals, such as the BMW 320d Touring or the Audi A4 Avant. Compared to the C 350, the C 220 CDI offered significantly better fuel economy but lacked the higher-output engine’s punch. Against the C 250 CDI, the difference in performance was less pronounced, but the C 220 CDI remained the more economical option. The C 220 CDI appealed to buyers who prioritized practicality and running costs over outright performance.
Legacy
The OM651 engine family, including the OM651.911 found in the C 220 CDI, proved to be remarkably durable and reliable. With proper maintenance, these engines can accumulate high mileage without major issues. On the used car market, the S204 C-Class T-modell C 220 CDI BlueEFFICIENCY remains a popular choice for buyers seeking a practical, fuel-efficient, and well-built estate car. Common issues, if any, tend to be related to wear and tear on suspension components, brake systems, and the occasional diesel particulate filter (DPF) issue, particularly on vehicles that have primarily been used for short journeys. The C 220 CDI BlueEFFICIENCY represents a solid and dependable option in the used car market, offering a blend of Mercedes-Benz quality and practicality.





