The Mercedes-Benz C-Class Sport Coupe (CL203) C 350 V6, produced from May 2005 to April 2008, represented a performance-oriented variant within the second generation (W203) C-Class lineup. Positioned as a more sporting alternative to the sedan and wagon models, the CL203 Sport Coupe featured a distinctive three-door coupe body style. The C 350 V6, equipped with the M272 engine, was the top-tier performance option for this body style, offering a significant step up in power compared to the four-cylinder and smaller V6 engines available. It was a key model in Mercedes-Benz’s attempt to attract a younger, more dynamic customer base to the C-Class range.
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class Sport Coupe (CL203, facelift 2004) |
| Type (Engine) | C 350 V6 (272 Hp) |
| 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) | 13.7-14 l/100 km (17.2 – 16.8 US mpg) |
| Fuel consumption (extra urban) | 7-7.3 l/100 km (33.6 – 32.2 US mpg) |
| Fuel consumption (combined) | 9.5-9.8 l/100 km (24.8 – 24 US mpg) |
| CO2 emissions | 227 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 | 5.4 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 | 1465 kg (3229.77 lbs.) |
| Max. weight | 2010 kg (4431.29 lbs.) |
| Max load | 545 kg (1201.52 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 | 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 |
| Tires size | 225/45 R 17 |
| Wheel rims size | 7.5 J x 17 H 2 |
Powertrain & Engine Architecture
The heart of the C 350 V6 was the M272.960 3.5-liter naturally aspirated V6 engine. This engine was a significant departure from the earlier inline-six engines traditionally found in Mercedes-Benz vehicles. The M272 featured all-aluminum construction, including the cylinder heads and block, contributing to a lighter overall weight. It employed a three-valve per cylinder (two intake, one exhaust) DOHC valvetrain and a multi-port fuel injection system. The engine produced 272 horsepower at 6,000 rpm and 350 Nm (258 lb-ft) of torque between 2,400 and 5,000 rpm. The six-speed manual transmission was standard, providing precise gear changes and enhancing the sporty driving experience. While an automatic transmission was available on other C-Class models, it wasn’t offered with the C 350 V6 in the US market.
Driving Characteristics
The C 350 V6 offered a noticeably more engaging driving experience than its four-cylinder counterparts. The 3.5-liter V6 delivered smooth, linear power throughout the rev range, making it responsive in both city and highway driving. The six-speed manual transmission allowed drivers to fully exploit the engine’s power, resulting in a 0-60 mph time of approximately 6.1 seconds. Compared to the C 230 Kompressor or C 280, the C 350 V6 provided significantly more acceleration and a more refined engine note. The rear-wheel-drive configuration contributed to a balanced chassis and predictable handling, although it could be challenging for inexperienced drivers in adverse weather conditions. The gear ratios were well-matched to the engine’s powerband, providing strong acceleration in each gear.
Equipment & Trim Levels
The C 350 V6 Sport Coupe was generally well-equipped, reflecting its position as the range-topping model. Standard features included sport seats, a leather-wrapped steering wheel and shift knob, automatic climate control, and a premium audio system. Exterior features included a unique body kit with aggressive front and rear bumpers, side skirts, and alloy wheels. Optional extras included a sunroof, navigation system, and upgraded leather upholstery. The interior typically featured aluminum trim accents, further enhancing the sporty aesthetic. The overall ambiance was focused on providing a driver-centric experience with a touch of luxury.
Chassis & Braking
The CL203 Sport 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 C 350 V6 was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. ABS (Anti-lock Braking System) was standard, providing enhanced braking performance and stability. The suspension tuning was firmer than that of the standard C-Class models, contributing to improved handling and a more connected feel to the road.
Market Reception & Comparison
The C 350 V6 Sport Coupe was generally well-received by automotive critics, who praised its powerful engine, sporty handling, and stylish design. However, some reviewers noted that the rear seats were cramped and access was difficult due to the coupe body style. Compared to its rivals, such as the BMW 3 Series Coupe and Audi A4 Coupe, the C 350 V6 offered a compelling combination of performance, luxury, and value. Fuel economy was reasonable for a V6 engine of this size, averaging around 24.8 mpg in combined driving. Reliability was generally good, although some owners reported minor issues with the electronic systems.
Legacy
The M272 engine proved to be a durable and reliable powerplant, and many C 350 V6 models remain on the road today. The CL203 Sport Coupe, particularly the C 350 V6 variant, has gained a following among enthusiasts who appreciate its sporty character and classic Mercedes-Benz styling. In the used car market, these models typically command a premium over the less powerful C-Class variants. While not as common as the sedan or wagon models, the C 350 V6 Sport Coupe represents a desirable and engaging option for those seeking a performance-oriented Mercedes-Benz.
