The Mercedes-Benz C-Class (W204) C 300 V6, produced from 2009 to 2011, represented a mid-range offering within the broader W204 C-Class lineup. Positioned above the C250 and below the C350 and C63 AMG models, the C 300 V6 aimed to provide a balance of performance and luxury for the American market. It was a key component of Mercedes-Benz’s strategy to appeal to buyers seeking a refined driving experience with a more powerful engine than the base models, but without the higher price tag of the top-tier trims. The W204 generation, launched in 2007, was a significant step forward for the C-Class, addressing criticisms of the previous W203 model regarding interior quality and overall refinement.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W204) |
| Type (Engine) | C 300 V6 (231 Hp) 7G-TRONIC |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (NEDC) | 13.6-13.8 l/100 km (17.3 – 17 US mpg, 20.8 – 20.5 UK mpg, 7.4 – 7.2 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 7-7.2 l/100 km (33.6 – 32.7 US mpg, 40.4 – 39.2 UK mpg, 14.3 – 13.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 9.4-9.6 l/100 km (25 – 24.5 US mpg, 30.1 – 29.4 UK mpg, 10.6 – 10.4 km/l) |
| CO2 emissions (NEDC) | 219-224 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.2 sec |
| Acceleration 0 – 62 mph | 7.2 sec |
| Acceleration 0 – 60 mph | 6.8 sec |
| Maximum speed | 246 km/h (152.86 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.5 kg/Hp, 154 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 200 Nm/tonne |
| Power | 231 Hp @ 6000 rpm |
| Torque | 300 Nm @ 2500-5000 rpm (221.27 lb.-ft. @ 2500-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 272.947 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 82 mm (3.23 in.) |
| Compression ratio | 11.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1500 kg (3306.93 lbs.) |
| Max. weight | 2060 kg (4541.52 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 (12%) | 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 | 2009 mm (79.09 in.) |
| Height | 1447 mm (56.97 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1549 mm (60.98 in.) |
| Rear (Back) track | 1552 mm (61.1 in.) |
| Front overhang | 765 mm (30.12 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Minimum turning circle (turning diameter) | 10.84 m (35.56 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 | 7 gears, automatic transmission G-TRONIC |
| 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 heart of the C 300 V6 was the M272.947 3.0-liter naturally aspirated V6 engine. This engine, a staple in many Mercedes-Benz models of the era, featured a 60-degree V-angle and utilized a multi-port fuel injection system. The engine produced 231 horsepower at 6,000 rpm and 300 Nm (221 lb-ft) of torque between 2,500 and 5,000 rpm. The engine employed a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its relatively high specific output. Paired with the engine was the 7G-TRONIC seven-speed automatic transmission, known for its smooth shifting and efficiency. This transmission offered a wide range of gear ratios, optimizing both acceleration and fuel economy. The transmission was electronically controlled, adapting to driving conditions and driver input.
Driving Characteristics
The C 300 V6 with the 7G-TRONIC transmission offered a comfortable and refined driving experience. While not overtly sporty, the engine provided ample power for everyday driving and confident highway passing. The 7G-TRONIC transmission contributed to smooth acceleration, although some drivers noted a slight delay in response compared to the available six-speed manual transmission. The automatic transmission’s gear ratios were tuned for a balance of performance and fuel efficiency, prioritizing smooth cruising over aggressive acceleration. Compared to the C250, the C 300 V6 offered a noticeable improvement in acceleration and overall responsiveness. However, it didn’t possess the outright performance of the C350, which featured a larger V6 engine.
Equipment & Trim Levels
The C 300 V6 typically came standard with features such as automatic climate control, power-adjustable front seats, a multi-function steering wheel, and an audio system with CD player. Leather upholstery was often standard, and options included a sunroof, navigation system, premium sound system, and parking sensors. The interior design was generally considered upscale for its time, with high-quality materials and a focus on ergonomics. Trim levels could vary slightly depending on the package selected, with options like the Sport package adding features like sport seats, a sport suspension, and unique exterior styling elements.
Chassis & Braking
The W204 C-Class featured a fully independent suspension system, with a McPherson strut setup at the front and a multi-link suspension at the rear. This configuration provided a comfortable ride and good handling characteristics. The C 300 V6 typically came 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. The steering system was a rack-and-pinion setup with hydraulic power assistance, providing precise and responsive steering feel.
Market Reception & Comparison
The C 300 V6 was generally well-received by automotive critics, who praised its comfortable ride, refined interior, and capable engine. However, some reviewers noted that the handling wasn’t as sharp as some of its competitors, such as the BMW 3 Series. Fuel economy was considered average for its class, with combined fuel consumption figures around 25 mpg. Compared to the C250, the C 300 V6 offered a significant performance upgrade, justifying the higher price. Compared to the C350, it represented a more affordable option for buyers who didn’t require the ultimate in performance.
Legacy
The M272 engine family, including the 3.0-liter V6 used in the C 300 V6, is generally considered reliable, although regular maintenance is crucial. Common issues can include oil leaks and occasional problems with the balance shaft. The 7G-TRONIC transmission is also generally reliable, but fluid changes should be performed according to the manufacturer’s recommendations. Today, the W204 C 300 V6 represents a relatively affordable entry point into the Mercedes-Benz ownership experience. Well-maintained examples can still provide years of reliable service, offering a blend of luxury, performance, and practicality.
