The Mercedes-Benz C-Class Sport Coupe (CL203 chassis, post-facelift) C 220 CDI Automatic, produced from April 2004 to April 2005, represented a compelling entry point into the premium coupe market for buyers seeking diesel efficiency and Mercedes-Benz refinement. Positioned as a mid-range offering within the CL203 lineup, it slotted below the more powerful C 320 CDI and gasoline-powered variants, and above the C 180 Kompressor. This variant aimed to balance performance with fuel economy, appealing to drivers prioritizing practicality and lower running costs without sacrificing the prestige of the three-pointed star. The CL203 Sport Coupe, a three-door coupe based on the W203 C-Class sedan, offered a more sporting aesthetic and a focus on driver engagement compared to its four-door sibling.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class Sport Coupe (CL203, facelift 2004) |
| Type (Engine) | C 220 CDI (150 Hp) Automatic |
| Start of production | April, 2004 |
| End of production | April, 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 3 |
| Fuel consumption (urban) | 9 l/100 km (26.1 US mpg, 31.4 UK mpg, 11.1 km/l) |
| Fuel consumption (extra urban) | 5.2 l/100 km (45.2 US mpg, 54.3 UK mpg, 19.2 km/l) |
| Fuel consumption (combined) | 6.6 l/100 km (35.6 US mpg, 42.8 UK mpg, 15.2 km/l) |
| CO2 emissions | 175 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec |
| Maximum speed | 218 km/h (135.46 mph) |
| Emission standard | Euro 3 |
| Weight-to-power ratio | 9.7 kg/Hp, 102.7 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 232.9 Nm/tonne |
| Power | 150 Hp @ 4200 rpm |
| Power per litre | 69.8 Hp/l |
| Torque | 340 Nm @ 2000 rpm (250.77 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 646.963 |
| 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 | 18:1 |
| 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) |
| Coolant capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 1460 kg (3218.75 lbs.) |
| Max. weight | 1970 kg (4343.11 lbs.) |
| Max load | 510 kg (1124.36 lbs.) |
| Trunk (boot) space – minimum | 310 l (10.95 cu. ft.) |
| Trunk (boot) space – maximum | 1100 l (38.85 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4343 mm (170.98 in.) |
| Width | 1728 mm (68.03 in.) |
| Width including mirrors | 1960 mm (77.17 in.) |
| Height | 1406 mm (55.35 in.) |
| Wheelbase | 2715 mm (106.89 in.) |
| Front track | 1493 mm (58.78 in.) |
| Rear track | 1464 mm (57.64 in.) |
| Front overhang | 788 mm (31.02 in.) |
| Rear overhang | 840 mm (33.07 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 10.76 m (35.3 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, automatic 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 R 16 V |
| Wheel rims size | 7 J x 16 H 2 |
Powertrain & Engine Architecture
The C 220 CDI Sport Coupe was powered by the OM 646.963, a 2.148-liter inline-four cylinder diesel engine. This engine was a mainstay of the Mercedes-Benz lineup during the early 2000s, known for its robust construction and relatively quiet operation for a diesel. The OM 646 featured common-rail direct injection, delivering fuel at extremely high pressure for improved combustion efficiency and reduced emissions. A turbocharger with an intercooler further enhanced performance, boosting power output to 150 horsepower at 4200 rpm and 340 Nm (250.77 lb-ft) of torque at 2000 rpm. The engine utilized a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing gas flow for increased power and efficiency. Paired with the engine was a five-speed automatic transmission, providing smooth shifts and convenient operation. This transmission was specifically tuned to complement the diesel engine’s torque characteristics, prioritizing fuel economy and relaxed cruising.
Driving Characteristics
The C 220 CDI Automatic offered a comfortable and refined driving experience. While not overtly sporty, the engine provided ample torque for everyday driving situations, making overtaking and merging onto highways relatively effortless. The automatic transmission, while not offering the quickest shifts, was smooth and predictable. Compared to the manual transmission versions, the automatic prioritized ease of use over outright performance. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 10.5 seconds, which was respectable for a diesel-powered coupe of this era. The focus was on fuel efficiency; the combined fuel economy of 6.6 l/100 km (35.6 US mpg) made it an economical choice for longer journeys. The steering was precise, and the suspension provided a good balance between comfort and handling, although it wasn’t as firm or responsive as some of the sportier C-Class variants.
Equipment & Trim Levels
The C 220 CDI Automatic Sport Coupe typically came equipped with a reasonable level of standard features. These included air conditioning, power windows, central locking, and an audio system. Interior upholstery was generally cloth, although leather options were available as upgrades. The dashboard featured a classic Mercedes-Benz design with wood or aluminum trim accents. Optional extras included a sunroof, upgraded audio systems, navigation, and heated seats. The “Sport” designation indicated the presence of some aesthetic enhancements, such as sport seats and unique alloy wheels.
Chassis & Braking
The CL203 Sport Coupe utilized an independent suspension system all around, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a comfortable ride and good handling characteristics. The C 220 CDI was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock Braking System (ABS) was standard, enhancing safety and stability during braking. The chassis was designed to provide a balance between rigidity and weight, contributing to the car’s overall handling performance.
Market Reception & Comparison
The C 220 CDI Automatic Sport Coupe was generally well-received by automotive critics as a practical and refined coupe. It was praised for its fuel efficiency, comfortable ride, and the prestige associated with the Mercedes-Benz brand. However, some reviewers noted that the performance was not as exhilarating as some of its gasoline-powered rivals. Compared to the C 320 CDI, the C 220 CDI offered lower running costs but less power. Against the gasoline-powered C 180 Kompressor, the C 220 CDI provided significantly more torque and better fuel economy, making it a more sensible choice for drivers covering long distances.
Legacy
The OM 646 engine, found in the C 220 CDI, proved to be a durable and reliable powerplant when properly maintained. While diesel engines are inherently more complex than their gasoline counterparts, the OM 646 has a reputation for longevity. Today, well-maintained examples of the C 220 CDI Sport Coupe can still be found on the used car market, offering an affordable entry point into Mercedes-Benz ownership. Common issues include wear and tear on the turbocharger and potential problems with the fuel injection system, but these are generally manageable with regular servicing. The CL203 Sport Coupe, and particularly the C 220 CDI variant, represents a solid and practical choice for buyers seeking a stylish and economical coupe with a touch of German engineering.
