The Mercedes-Benz C-Class T-modell (S204) facelift, specifically the C 300 CDI BlueEFFICIENCY V6 (231 hp) 4MATIC variant with the 7G-TRONIC PLUS automatic transmission, was produced from 2011 to 2014. This model represents a mid-cycle refresh of the second-generation C-Class estate (wagon), positioned as a premium, efficient, and practical offering within the Mercedes-Benz lineup. It aimed to combine the luxury and refinement expected of the C-Class with the versatility of a wagon and the performance of a V6 diesel engine coupled with all-wheel drive. This particular configuration occupied a mid-to-upper range within the S204 T-modell series, offering a step up in performance and features compared to the base models while remaining more accessible than the high-performance AMG variants.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S204, facelift 2011) |
| Type (Engine) | C 300 CDI BlueEFFICIENCY V6 (231 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.2-9.3 l/100 km (25.6 – 25.3 US mpg) |
| Fuel consumption (extra urban) | 6-6.4 l/100 km (39.2 – 36.8 US mpg) |
| Fuel consumption (combined) | 7.2-7.4 l/100 km (32.7 – 31.8 US mpg) |
| CO2 emissions | 191-195 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 242 km/h (150.37 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.4 kg/Hp |
| Weight-to-torque ratio | 3.2 kg/Nm |
| Power | 231 Hp @ 3800 rpm |
| Torque | 540 Nm @ 1600-2400 rpm (398.28 lb.-ft. @ 1600-2400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.832 |
| Engine displacement | 2987 cm3 (182.28 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2325 kg (5125.75 lbs.) |
| Max load | 605 kg (1333.8 lbs.) |
| Trunk (boot) space – minimum | 485 l (17.13 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 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.) |
| Length | 4606 mm (181.34 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2008 mm (79.06 in.) |
| Height | 1459 mm (57.44 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1541 mm (60.67 in.) |
| Rear track | 1544 mm (60.79 in.) |
| Front overhang | 775 mm (30.51 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle | 10.84 m (35.56 ft.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC PLUS |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs, 322 mm |
| Rear brakes | Ventilated discs, 300 mm |
Powertrain & Engine Architecture
The heart of the C 300 CDI BlueEFFICIENCY is the OM 642.832 3.0-liter V6 diesel engine. This engine is a robust and well-regarded design, known for its durability and strong torque output. It features a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The engine also incorporates a variable geometry turbocharger (VGT) and an intercooler to enhance performance and efficiency. The V6 configuration provides inherent smoothness compared to inline engines, and the DOHC (Double Overhead Camshaft) valvetrain contributes to efficient cylinder filling. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, is renowned for its smooth and quick shifts. It features a torque converter lock-up clutch that engages in most driving situations, improving fuel economy. The 4MATIC all-wheel-drive system utilizes a multi-plate clutch to distribute power between the front and rear axles, providing enhanced traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The C 300 CDI 4MATIC offers a compelling blend of performance and comfort. The 540 Nm (398 lb-ft) of torque available from 1600-2400 rpm provides strong acceleration in everyday driving situations. The 0-60 mph time of around 6.2 seconds is respectable for a diesel-powered wagon. The 7G-TRONIC PLUS transmission is well-tuned to the engine’s characteristics, providing seamless gear changes. Compared to the base C-Class models with smaller engines, the C 300 CDI offers significantly more power and a more relaxed driving experience, especially when fully loaded or towing. While not as sporty as the C 63 AMG, the C 300 CDI provides ample power for confident overtaking and highway cruising. The all-wheel-drive system inspires confidence in slippery conditions, enhancing stability and control.
Equipment & Trim Levels
The C 300 CDI BlueEFFICIENCY 4MATIC typically came well-equipped as standard. Features included automatic climate control, a multi-function steering wheel, power-adjustable front seats, and a high-quality audio system. The interior typically featured a combination of leather and Alcantara upholstery. Optional extras included a panoramic sunroof, navigation system, premium sound system, parking assist, and various driver assistance systems. The “BlueEFFICIENCY” designation indicated the inclusion of fuel-saving technologies such as start-stop functionality and optimized aerodynamics.
Chassis & Braking
The S204 C-Class T-modell features a fully independent suspension system. The front utilizes a McPherson strut setup, while the rear employs a multi-link suspension. This configuration provides a good balance between ride comfort and handling. Stabilizer bars are fitted to both axles to reduce body roll during cornering. The braking system consists of ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock Braking System (ABS) and Electronic Stability Program (ESP) are standard safety features.
Market Reception & Comparison
The C 300 CDI BlueEFFICIENCY 4MATIC was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and practical wagon body style. Fuel economy was also a strong point, with combined figures around 32.7 mpg. Compared to the C 220 CDI or C 250 CDI models, the C 300 CDI offered a noticeable performance upgrade. However, it came at a higher price point. The C 300 CDI also offered a more refined and powerful alternative to gasoline-powered C-Class variants.
Legacy
The OM 642 engine family, including the OM 642.832 found in the C 300 CDI, is known for its durability and longevity. With proper maintenance, these engines can reliably exceed 200,000 miles. The 7G-TRONIC PLUS transmission is also generally reliable, although regular fluid changes are crucial. In the used car market, the C 300 CDI 4MATIC T-modell remains a desirable option for buyers seeking a practical, comfortable, and efficient luxury wagon. Its combination of performance, fuel economy, and all-wheel-drive capability continues to appeal to a wide range of drivers.
