The Mercedes-Benz C-Class Coupe (C204) facelift, produced from 2011 to 2015, represented a significant refinement of the second-generation C-Class. The C 220 CDI BlueEFFICIENCY, powered by a 2.1-liter turbocharged diesel engine producing 170 horsepower, occupied a key position in the coupe lineup, offering a balance between performance, fuel economy, and luxury. This variant aimed to appeal to buyers seeking a sophisticated and efficient grand tourer, particularly in European markets where diesel engines were highly favored. It slotted between the lower-powered C 180 CDI and the more potent C 250 CDI models, offering a compelling alternative for those prioritizing fuel efficiency without sacrificing a respectable level of performance.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class Coupe (C204, facelift 2011) |
| Type (Engine) | C 220 CDI BlueEFFICIENCY (170 Hp) |
| Start of production | 2011 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 5.6-6.3 l/100 km (42 – 37.3 US mpg) |
| Fuel consumption (extra urban) | 3.7-4.3 l/100 km (63.6 – 54.7 US mpg) |
| Fuel consumption (combined) | 4.4-5.1 l/100 km (53.5 – 46.1 US mpg) |
| CO2 emissions | 117-133 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.4 sec |
| Acceleration 0 – 62 mph | 8.4 sec |
| Acceleration 0 – 60 mph | 8 sec |
| Maximum speed | 232 km/h (144.16 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.1 kg/Hp |
| Weight-to-torque ratio | 3.9 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 | 1540 kg (3395.12 lbs.) |
| Max. weight | 2085 kg (4596.64 lbs.) |
| Max load | 545 kg (1201.52 lbs.) |
| Trunk (boot) space (minimum) | 450 l (15.89 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 | 4590 mm (180.71 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 1997 mm (78.62 in.) |
| Height | 1406 mm (55.35 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 | 1055 mm (41.54 in.) |
| Drag coefficient (Cd) | 0.26 |
| 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 |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The heart of the C 220 CDI BlueEFFICIENCY was the OM 651.911, a 2.1-liter inline-four cylinder diesel engine. This engine was a cornerstone of Mercedes-Benz’s diesel offerings, known for its robust construction and efficiency. It featured a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine employed a twin-turbocharger setup – a smaller turbo for quick response at low engine speeds and a larger turbo for increased power at higher RPMs. An intercooler further enhanced performance by cooling the compressed intake air. The engine’s valvetrain utilized a double overhead camshaft (DOHC) design with four valves per cylinder, contributing to its efficient breathing and power output. The 6-speed manual transmission was standard, providing precise gear changes and contributing to the car’s overall driving experience.
Driving Characteristics
The C 220 CDI BlueEFFICIENCY offered a refined and comfortable driving experience. While not overtly sporty, the 170 horsepower and 400 Nm (295 lb-ft) of torque provided ample power for everyday driving and confident highway cruising. The engine’s peak torque was available from a low 1400 rpm, resulting in strong acceleration from a standstill and effortless overtaking. The manual transmission, while requiring more driver involvement than an automatic, allowed for greater control and a more engaging driving experience. Compared to the more powerful C 250 CDI, the C 220 CDI offered a more relaxed and fuel-efficient driving style. The gear ratios were tuned for efficiency, prioritizing fuel economy over outright acceleration.
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. The dashboard layout was typical of Mercedes-Benz, emphasizing quality materials and a functional design. Optional extras included a premium sound system, navigation system, sunroof, and various driver assistance features like parking sensors and rain-sensing wipers. The “BlueEFFICIENCY” designation indicated the inclusion of fuel-saving technologies such as start-stop functionality and optimized aerodynamics.
Chassis & Braking
The C-Class Coupe featured an independent suspension system at all four wheels. The front suspension utilized a McPherson strut design, while the rear employed a multi-link setup. Both ends were equipped with a transverse stabilizer bar to reduce body roll during cornering. The braking system consisted of ventilated discs at the front and solid discs at the rear, providing adequate stopping power. Anti-lock braking system (ABS) was standard, enhancing safety and stability. The chassis was tuned for a balance between comfort and handling, offering a relatively smooth ride while maintaining a degree of responsiveness.
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 lacked the outright performance of its more powerful siblings. Compared to the C 250 CDI, the C 220 CDI offered significantly better fuel economy but at the expense of some performance. The C 180 CDI, while even more fuel-efficient, was considered underpowered by many. The C 220 CDI struck a good balance, appealing to buyers who prioritized efficiency and comfort over outright speed.
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. These engines are known for their longevity and relatively low maintenance costs. In the used car market, the C 220 CDI BlueEFFICIENCY remains a popular choice, particularly for those seeking a fuel-efficient and comfortable coupe. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, especially on vehicles that have primarily been used for short trips. Overall, the C 220 CDI BlueEFFICIENCY represents a well-engineered and practical grand tourer that continues to offer a compelling value proposition in the used car market.
