The Mercedes-Benz C-Class T-modell (S204), specifically the C 220 CDI BlueEFFICIENCY variant produced from 2011 to 2014, represents a significant iteration of the popular compact executive estate car. Positioned as a fuel-efficient and practical option within the C-Class range, this model aimed to balance performance with economy, appealing to buyers seeking a versatile vehicle for both family and business use. The S204 generation, benefitting from a 2011 facelift, incorporated updated styling, improved interior materials, and advancements in engine technology, including the implementation of BlueEFFICIENCY measures to reduce emissions and enhance fuel consumption. This variant occupied a mid-range position in the T-modell lineup, offering a step up in performance from the base models while remaining more accessible than the higher-powered C 350 or AMG variants.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S204, facelift 2011) |
| Type (Engine) | C 220 CDI BlueEFFICIENCY (170 Hp) |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6-6.3 l/100 km (39.2 – 37.3 US mpg) |
| Fuel consumption (extra urban) | 4-4.5 l/100 km (58.8 – 52.3 US mpg) |
| Fuel consumption (combined) | 4.7-5.2 l/100 km (50 – 45.2 US mpg) |
| CO2 emissions | 124-135 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 219 km/h (136.08 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.3 kg/Hp |
| Weight-to-torque ratio | 4 kg/Nm |
| Power | 170 Hp @ 3000-4200 rpm |
| 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 | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1580 kg (3483.3 lbs.) |
| Max. weight | 2195 kg (4839.15 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) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4606 mm (181.34 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2008 mm (79.06 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 | 775 mm (30.51 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 10.84 m (35.56 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 6 |
| Gearbox type | 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; 225/45 R17 |
| Wheel rims size | 7J x 16; 7.5J x 17 |
Powertrain & Engine Architecture
The C 220 CDI BlueEFFICIENCY is powered by the OM 651.911, a 2.1-liter inline-four cylinder diesel engine. This engine is a cornerstone of Mercedes-Benz’s diesel offerings, known for its robust construction and efficiency. The ‘BlueEFFICIENCY’ designation indicates the inclusion of technologies aimed at reducing fuel consumption and emissions, such as optimized combustion chamber geometry, reduced friction components, and an enhanced exhaust gas recirculation (EGR) system. The engine utilizes a second-generation common rail direct injection system, delivering fuel at extremely high pressures (1600 bar) for improved atomization and combustion. A twin-turbocharger setup, incorporating a small, low-pressure turbocharger and a larger, high-pressure turbocharger, provides both excellent low-end torque and strong top-end power. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The six-speed manual transmission was standard, offering precise shifts and contributing to the vehicle’s overall efficiency.
Driving Characteristics
The C 220 CDI BlueEFFICIENCY, with its 170 horsepower and 400 Nm (295 lb-ft) of torque, provided a comfortable and capable driving experience. While not overtly sporty, the engine delivered ample power for everyday driving and highway cruising. The peak torque, available from a low 1400 rpm, ensured strong acceleration in most situations. Compared to the more powerful C 350, the C 220 CDI offered a more relaxed driving style, prioritizing fuel economy over outright performance. The manual transmission, while engaging, had relatively long throws compared to some competitors. The gear ratios were well-chosen to maximize fuel efficiency and provide adequate acceleration. The rear-wheel-drive configuration contributed to balanced handling, although it could be less forgiving in slippery conditions compared to all-wheel-drive variants.
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. Upholstery was generally cloth, although leather options were available. Optional extras included a premium audio system, navigation system, sunroof, and parking sensors. Trim levels varied depending on the market, but generally offered packages that added features like upgraded interior trim, alloy wheels, and advanced safety systems. The interior design was typical of Mercedes-Benz, emphasizing quality materials and a refined aesthetic.
Chassis & Braking
The S204 C-Class T-modell utilized an independent suspension system at all four wheels. The front suspension employed a McPherson strut design, while the rear featured a multi-link setup. This configuration provided a good balance between ride comfort and handling precision. Stabilizer bars were fitted to both axles to reduce body roll during cornering. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking. The steering system was a rack-and-pinion type with hydraulic power assistance, providing a responsive and precise feel.
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 refined interior. However, some reviewers noted that the engine could be somewhat noisy compared to some competitors, and the manual transmission wasn’t as slick as some others on the market. Compared to the C 250 CDI, which offered more power, the C 220 CDI provided a more affordable entry point into the C-Class range. Against rivals like the BMW 3 Series Touring and Audi A4 Avant, the C 220 CDI offered a compelling combination of practicality, efficiency, and luxury.
Legacy
The OM 651 engine family, including the 2.1-liter variant found in the C 220 CDI, 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 220 CDI BlueEFFICIENCY T-modell remains a popular choice for buyers seeking a practical and economical estate car. While older examples may require attention to wear-and-tear items, the engine itself is generally considered to be robust and long-lasting. The S204 C-Class T-modell, and particularly the C 220 CDI variant, represents a well-engineered and versatile vehicle that continues to offer good value in the used car market today.




