The Mercedes-Benz C-Class Sport Coupe (CL203) C 230 Kompressor, produced from February 2001 to June 2002, represented a compelling entry point into the premium coupe market for Mercedes-Benz in Europe and North America. Positioned as a more sporting alternative to the traditional C-Class sedan, the CL203 offered a sleek, three-door coupe body style. The C 230 Kompressor variant, equipped with a supercharged 2.3-liter inline-four engine and a five-speed automatic transmission, aimed to balance performance with everyday usability and fuel efficiency. It occupied a mid-range position within the CL203 lineup, offering a step up in power from the base C 180 Kompressor while remaining more accessible than the higher-performance C 320 or the eventual C 32 AMG models.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Sport Coupe (CL203) |
| Type (Engine) | C 230 Kompressor (197 Hp) Automatic |
| Start of production | February, 2001 |
| End of production | June, 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 3 |
| Fuel consumption (economy) – urban (NEDC) | 14.1 l/100 km (16.7 US mpg, 20 UK mpg, 7.1 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| CO2 emissions (NEDC) | 235 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.1 sec |
| Acceleration 0 – 62 mph | 8.1 sec |
| Acceleration 0 – 60 mph | 7.7 sec |
| Maximum speed | 237 km/h (147.26 mph) |
| Emission standard | Euro D4 |
| Weight-to-power ratio | 7.2 kg/Hp, 138.2 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 196.5 Nm/tonne |
| Power | 197 Hp @ 5300 rpm |
| Power per litre | 85.8 Hp/l |
| Torque | 280 Nm @ 2500-4800 rpm (206.52 lb.-ft. @ 2500-4800 rpm) |
| Maximum engine speed | 6200 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 111.981 |
| Engine displacement | 2295 cm3 (140.05 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 90.9 mm (3.58 in.) |
| Piston Stroke | 88.4 mm (3.48 in.) |
| Compression ratio | 9:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1425 kg (3141.59 lbs.) |
| Max. weight | 1925 kg (4243.9 lbs.) |
| Max load | 500 kg (1102.31 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.) |
| 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 (Back) 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 (turning diameter) | 10.76 m (35.3 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | 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 91 V |
| Wheel rims size | 7 J x 16 H 2 |
Powertrain & Engine Architecture
The heart of the C 230 Kompressor is the M111.981 2.3-liter inline-four engine. This engine is notable for its mechanically driven supercharger (Kompressor in Mercedes terminology), which provides increased torque at lower engine speeds compared to naturally aspirated engines. The supercharger, a Roots-type blower, is electromagnetically clutch-controlled, engaging at approximately 2000 rpm to deliver a noticeable boost in power. Fuel delivery is managed by a multi-port fuel injection system, and the engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The five-speed automatic transmission (typically the 722.6) was chosen for its smooth operation and ease of use, catering to the target audience who prioritized comfort over outright performance. The transmission features electronic control for optimized shift points.
Driving Characteristics
The C 230 Kompressor Automatic offered a respectable driving experience. While not as overtly sporty as the manual transmission versions or the more powerful C 320, the supercharger provided a useful surge of power, making overtaking and merging onto highways relatively effortless. The automatic transmission, while smooth, did result in some power loss compared to the six-speed manual. Gear ratios were tuned for a balance of acceleration and fuel economy. The 0-60 mph time of around 7.7 seconds was competitive for its class. The rear-wheel-drive configuration contributed to a balanced feel, although traction could be limited in wet conditions.
Equipment & Trim Levels
The C 230 Kompressor typically came standard with features such as air conditioning, power windows and locks, a multi-function steering wheel, and an audio system. Upholstery was generally cloth, although leather was available as an option. Optional extras included a sunroof, heated seats, automatic climate control, and upgraded audio systems. The Sport Coupe trim also featured unique styling cues, such as sport seats and a different grille design. The interior dashboard configuration was typical of Mercedes-Benz at the time, with a focus on functionality and a relatively conservative design aesthetic.
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 provided a comfortable ride while maintaining reasonable handling characteristics. The C 230 Kompressor typically featured ventilated disc brakes at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The chassis was designed to provide a good balance between rigidity and weight, contributing to the car’s overall handling.
Market Reception & Comparison
The C 230 Kompressor Automatic was generally well-received by automotive critics. It was praised for its comfortable ride, refined interior, and the added performance provided by the supercharger. However, some reviewers noted that the automatic transmission dulled the engine’s responsiveness compared to the manual version. Compared to the naturally aspirated C 180 Kompressor, the C 230 offered a significant performance upgrade. Against the C 320, it represented a more affordable option, albeit with less power. Fuel economy was reasonable for its class, although not exceptional. Reliability was generally good, although some owners reported issues with the supercharger clutch and the automatic transmission over the long term.
Legacy
The CL203 C-Class Sport Coupe, and specifically the C 230 Kompressor Automatic, has become a relatively affordable entry point into Mercedes-Benz ownership in the used car market. The M111 engine is known for its durability, although regular maintenance is crucial. The supercharger can require attention as it ages. The automatic transmission, while generally reliable, should be checked for smooth operation during a pre-purchase inspection. Today, these coupes are appreciated by enthusiasts for their classic Mercedes-Benz styling and their blend of performance and comfort. They represent a unique offering from Mercedes-Benz, bridging the gap between the practicality of the sedan and the sportiness of a dedicated coupe.
