The Mercedes-Benz C-Class T-modell (S204) C 320 CDI V6, produced from 2007 to 2009, represents a compelling blend of performance, practicality, and luxury within the compact executive estate (wagon) segment. Positioned as a mid-to-high range offering within the S204 series, it catered to buyers seeking a more powerful and refined alternative to the base diesel models. This variant combined a potent 3.0-liter V6 turbodiesel engine with a six-speed manual transmission, offering a driving experience distinct from the more common automatic options. The S204 generation itself was a significant evolution of the C-Class, building upon the success of the W203 while introducing enhanced refinement, technology, and safety features.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-class T-modell (S204) |
| Type (Engine) | C 320 CDI V6 (224 Hp) |
| Start of production | 2007 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.7-10 l/100 km (24.2 – 23.5 US mpg) |
| Fuel consumption (extra urban) | 5.9-6.2 l/100 km (39.9 – 37.9 US mpg) |
| Fuel consumption (combined) | 7.1-7.4 l/100 km (33.1 – 31.8 US mpg) |
| CO2 emissions | 188-198 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.9 sec |
| Acceleration 0 – 62 mph | 7.9 sec |
| Acceleration 0 – 60 mph | 7.5 sec |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 7.5 kg/Hp |
| Weight-to-torque ratio | 3.3 kg/Nm |
| Power | 224 Hp @ 3800 rpm |
| Torque | 510 Nm @ 1600-2800 rpm (376.16 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 642.960 |
| 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 | 17.7:1 |
| 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 | 1675 kg (3692.74 lbs.) |
| Max. weight | 2280 kg (5026.54 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) |
| Permitted trailer load (braked) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load (unbraked) | 750 kg (1653.47 lbs.) |
| Length | 4596 mm (180.94 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2020 mm (79.53 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 | 765 mm (30.12 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Turning circle | 10.84 m (35.56 ft.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual |
| Front suspension | Independent McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Discs |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Tires size | 225/45 R17 |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the C 320 CDI T-modell is the OM 642.960 3.0-liter V6 turbodiesel engine. This engine, a cornerstone of Mercedes-Benz’s diesel offerings in the mid-2000s, is characterized by its robust construction and sophisticated technology. It utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion and reduced emissions. The engine also features a variable geometry turbocharger (VGT) and an intercooler, enhancing both power and torque across a broad rev range. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, further contributes to the engine’s efficiency and performance. The six-speed manual transmission, while less common than the available automatic, provided drivers with greater control and a more engaging driving experience. The manual gearbox was chosen by buyers who preferred a more direct connection to the engine and a sportier feel.
Driving Characteristics
The C 320 CDI T-modell with the manual transmission offered a surprisingly engaging driving experience for a diesel estate. The 510 Nm (376 lb-ft) of torque, readily available from 1600-2800 rpm, provided strong acceleration in everyday driving situations and effortless overtaking capability. While not a sports car, the combination of the V6 engine and the manual gearbox allowed for precise control and a satisfying connection to the drivetrain. The gear ratios were well-matched to the engine’s characteristics, providing ample power in each gear. Compared to the lower-powered 1.8-liter petrol or smaller diesel variants, the C 320 CDI offered a significantly more refined and capable driving experience. It also provided a noticeable performance advantage over the automatic versions, offering quicker acceleration and more responsive gear changes.
Equipment & Trim Levels
The C 320 CDI T-modell typically came equipped with a generous array of standard features, reflecting its position as a mid-to-high range model. These included automatic climate control, power windows and mirrors, a multi-function steering wheel, and a high-quality audio system. Interior upholstery was typically a combination of cloth and leatherette, with full leather options available as an upgrade. Optional extras included a sunroof, navigation system, premium sound system, and parking sensors. The dashboard layout was typical of Mercedes-Benz at the time, characterized by a clean, functional design and high-quality materials.
Chassis & Braking
The S204 C-Class featured a fully independent suspension system, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a comfortable ride while maintaining good handling characteristics. Stabilizer bars were fitted to both axles to reduce body roll during cornering. The C 320 CDI T-modell was equipped with ventilated disc brakes at the front and solid discs at the rear, providing ample stopping power. Anti-lock braking system (ABS) was standard, enhancing safety and control in emergency braking situations.
Market Reception & Comparison
The C 320 CDI T-modell was generally well-received by automotive critics, who praised its powerful engine, refined ride, and spacious interior. The manual transmission was appreciated by enthusiasts who preferred a more engaging driving experience. Compared to other trims in the C-Class lineup, the C 320 CDI offered a compelling combination of performance and fuel economy. While the smaller diesel models were more economical, they lacked the power and refinement of the V6. The petrol-powered variants offered similar performance but typically consumed more fuel. Reliability was generally good, although the complex diesel injection system required regular maintenance.
Legacy
The OM 642 engine family, including the 3.0-liter V6 used in the C 320 CDI, has proven to be remarkably durable and reliable over the long term. With proper maintenance, these engines can easily exceed 200,000 miles. Today, the S204 C-Class T-modell C 320 CDI represents a desirable option in the used car market, particularly for buyers seeking a practical, comfortable, and relatively fuel-efficient estate car with a touch of luxury. The manual transmission variant is especially sought after by enthusiasts who appreciate its engaging driving experience and relative rarity.
