The Mercedes-Benz C-Class (W204) C 220 CDI, produced from 2007 to 2009, represented a significant entry point into the premium compact executive car segment for buyers prioritizing fuel efficiency and diesel torque. Positioned within the broader W204 C-Class range – which included petrol variants like the C180K, C230, and higher-performance models like the C350 and C63 AMG – the C 220 CDI offered a compelling blend of luxury, refinement, and economy. This variant was particularly popular in European markets where diesel engines held a strong preference due to favorable taxation and fuel costs. It served as a practical and sophisticated alternative to its gasoline-powered siblings, appealing to drivers covering long distances or seeking lower running costs.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W204) |
| Type (Engine) | C 220 CDI (170 Hp) |
| Start of production | 2007 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7.9-8.2 l/100 km (29.8 – 28.7 US mpg, 35.8 – 34.4 UK mpg, 12.7 – 12.2 km/l) |
| Fuel consumption (extra urban) | 4.7-4.9 l/100 km (50 – 48 US mpg, 60.1 – 57.6 UK mpg, 21.3 – 20.4 km/l) |
| Fuel consumption (combined) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg, 47.9 – 46.3 UK mpg, 16.9 – 16.4 km/l) |
| CO2 emissions | 156-160 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 | 229 km/h (142.29 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.9 kg/Hp, 112.6 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 264.9 Nm/tonne |
| Power | 170 Hp @ 3800 rpm |
| Power per litre | 79.1 Hp/l |
| Torque | 400 Nm @ 2000 rpm (295.02 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 646.811 |
| Engine displacement | 2148 cm3 (131.08 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 17.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1510 kg (3328.98 lbs.) |
| Max. weight | 2070 kg (4563.57 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space (minimum) | 475 l (16.77 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 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.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4581 mm (180.35 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2020 mm (79.53 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 | 765 mm (30.12 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 10.84 m (35.56 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 6 gears, 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 was powered by the OM 646.811, a 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay of the Mercedes-Benz lineup during the mid-2000s, known for its robust construction and relatively simple design. It featured a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A turbocharger with an intercooler further enhanced performance, boosting power output to 170 horsepower at 3800 rpm and generating a substantial 400 Nm (295 lb-ft) of torque at just 2000 rpm. The engine employed a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its efficiency and power delivery. The W204 C 220 CDI was typically paired with a six-speed manual transmission, although a five-speed automatic transmission was also available as an option. The automatic, while offering convenience, slightly impacted fuel economy and acceleration compared to the manual.
Driving Characteristics
The C 220 CDI with the manual transmission offered a surprisingly engaging driving experience. The abundant low-end torque made it effortless to navigate city streets and provided ample power for overtaking maneuvers on the highway. While not a sports car, the C 220 CDI felt composed and stable, offering a comfortable ride. The automatic transmission, while smooth, felt less responsive and slightly dulled the overall driving experience. The gear ratios were tuned for fuel efficiency rather than outright performance. Compared to the more powerful C 350, the C 220 CDI lacked the exhilarating acceleration, but it compensated with significantly better fuel economy and a more relaxed driving character. Against other diesel variants like the C 200 CDI, the C 220 CDI offered a noticeable performance upgrade, justifying its slightly higher price point.
Equipment & Trim Levels
The C 220 CDI typically came standard with features such as air conditioning, power windows, central locking, and an audio system. Higher trim levels, such as the Elegance and Avantgarde, added features like leather upholstery, wood trim, automatic climate control, and upgraded audio systems. Optional extras included a sunroof, navigation system, and parking sensors. The interior design was typical of Mercedes-Benz, emphasizing quality materials and a refined aesthetic. The dashboard layout was functional and well-organized, with intuitive controls.
Chassis & Braking
The W204 C-Class featured an independent suspension system all around, with a McPherson strut setup at the front and a multi-link suspension at the rear. This configuration provided a good balance between ride comfort and handling. The C 220 CDI was equipped with ventilated disc brakes 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 was a rack-and-pinion system with hydraulic power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The C 220 CDI was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some critics noted that the engine could be somewhat noisy compared to its gasoline counterparts. In terms of fuel economy, the C 220 CDI significantly outperformed the C 180K and C 230 models. Reliability was generally good, although some owners reported issues with the diesel particulate filter (DPF) and the fuel injection system. Compared to competitors like the BMW 320d and Audi A4 2.0 TDI, the C 220 CDI offered a similar level of performance and refinement.
Legacy
The OM 646 engine family, including the 2.1-liter variant used in the C 220 CDI, proved to be remarkably durable. Many examples have surpassed 200,000 miles with proper maintenance. On the used car market, the W204 C 220 CDI remains a popular choice for buyers seeking a reliable and fuel-efficient luxury sedan. However, potential buyers should be aware of the potential for DPF issues and the importance of regular servicing. The C 220 CDI represents a sweet spot in the W204 range, offering a compelling combination of practicality, refinement, and economy that continues to appeal to drivers today.
