The Mercedes-Benz C-Class Sport Coupe (CL203) facelift, specifically the C 350 V6 model equipped with the 7G-TRONIC transmission, was produced from May 2005 to April 2008. This variant represented a performance-oriented offering within the CL203 range, positioned above the base models and serving as a more accessible alternative to the high-performance AMG variants. It was primarily marketed in Europe and other international markets, offering a blend of sporty styling, a powerful V6 engine, and the convenience of a seven-speed automatic transmission. The CL203 Sport Coupe itself was a three-door coupe based on the W203 C-Class sedan, aiming to attract a younger demographic seeking a more dynamic and stylish vehicle.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class Sport Coupe (CL203, facelift 2004) |
| Type (Engine) | C 350 V6 (272 Hp) 7G-TRONIC |
| Start of production | May, 2005 |
| End of production | April, 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 3 |
| Fuel consumption (urban) | 13.9-14.2 l/100 km (16.9 – 16.6 US mpg) |
| Fuel consumption (extra urban) | 7.3-7.6 l/100 km (32.2 – 30.9 US mpg) |
| Fuel consumption (combined) | 9.7-10 l/100 km (24.2 – 23.5 US mpg) |
| CO2 emissions | 232 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.4 sec |
| Acceleration 0 – 62 mph | 6.4 sec |
| Acceleration 0 – 60 mph | 6.1 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 5.5 kg/Hp |
| Weight-to-torque ratio | 4.2 kg/Nm |
| Power | 272 Hp @ 6000 rpm |
| Torque | 350 Nm @ 2400-5000 rpm (258.15 lb.-ft. @ 2400-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 272.960 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.9 mm (3.66 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 10.7:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant capacity | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1485 kg (3273.86 lbs.) |
| Max. weight | 2010 kg (4431.29 lbs.) |
| Max load | 525 kg (1157.43 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 | 1410 mm (55.51 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 | Rear wheel drive |
| Number of gears | 7 |
| Gearbox type | 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 |
| Tires size | 225/45 R 17 |
| Wheel rims size | 7.5 J x 17 H 2 |
Powertrain & Engine Architecture
The C 350 Sport Coupe utilized the M272.960 3.5-liter V6 engine. This engine was a naturally aspirated powerplant featuring a 60-degree V-angle. It employed multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine’s design prioritized smooth power delivery and refinement. The 7G-TRONIC automatic transmission, a seven-speed unit, was a key component of this variant. This transmission offered a wider range of gear ratios compared to traditional five-speed automatics, contributing to improved fuel efficiency and more responsive acceleration. The 7G-TRONIC also featured a torque converter lock-up clutch that engaged in multiple gears, further enhancing efficiency.
Driving Characteristics
The C 350 V6 Automatic provided a noticeably more engaging driving experience than the base C-Class models. The 272 horsepower and 350 Nm (258 lb-ft) of torque delivered brisk acceleration, with a 0-60 mph time of around 6.1 seconds. While not as overtly sporty as the manual transmission variants or the AMG models, the 7G-TRONIC offered smooth and quick shifts, making it well-suited for both city driving and highway cruising. The automatic transmission’s programming prioritized comfort, but drivers could also utilize manual shift modes for greater control. The rear-wheel-drive configuration contributed to a balanced feel, although traction could be a concern in adverse weather conditions.
Equipment & Trim Levels
The C 350 Sport Coupe typically came standard with features such as leather upholstery, automatic climate control, a multi-function steering wheel, and a premium audio system. The “Sport” designation included unique exterior styling elements, such as a more aggressive front bumper, side skirts, and a rear spoiler. Optional extras included a sunroof, navigation system, heated seats, and upgraded wheels. Interior trim options allowed for some personalization, with choices in wood or aluminum finishes.
Chassis & Braking
The CL203 Sport Coupe featured an independent suspension system at all four wheels. The front suspension utilized McPherson struts, while the rear employed a multi-link setup. This configuration provided a good balance between ride comfort and handling precision. The C 350 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 control during emergency braking situations. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The C 350 V6 Automatic was generally well-received by automotive critics. It was praised for its powerful engine, smooth transmission, and comfortable ride. However, some reviewers noted that the automatic transmission, while refined, didn’t offer the same level of driver engagement as the available manual gearbox. Compared to the C 230 Kompressor, the C 350 offered significantly more power and performance. Against the C 320 CDI diesel, the C 350 traded fuel economy for a more responsive and characterful engine. The C 350 positioned itself as a compelling alternative for those seeking a sporty coupe without the higher price tag of the AMG models.
Legacy
The M272 engine family, including the 3.5-liter variant used in the C 350, is generally considered to be a reliable powerplant when properly maintained. Common issues include occasional oil leaks and problems with the balance shaft, but these are not widespread. The 7G-TRONIC transmission is also known for its durability, although regular fluid changes are essential. Today, the CL203 C 350 Sport Coupe represents an affordable entry point into the Mercedes-Benz coupe world. Well-maintained examples are sought after by enthusiasts who appreciate the combination of style, performance, and relative reliability.
