The Mercedes-Benz C-Class T-modell (S203) facelift, specifically the C 270 CDI variant with 170 horsepower, was produced from April 2004 to June 2005. This model represented a mid-cycle refresh of the second-generation C-Class estate (wagon), offering a blend of practicality, luxury, and diesel efficiency. Positioned as a mid-range offering within the C-Class T-modell lineup, it slotted between the lower-powered C 200 CDI and the more potent C 320 CDI, appealing to buyers seeking a balance of performance and economy. The S203 series, built on the W203 platform, aimed to provide a more spacious and versatile alternative to the C-Class sedan, catering to the European market’s preference for practical touring vehicles.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S203, facelift 2004) |
| Type (Engine) | C 270 CDI (170 Hp) |
| Start of production | April, 2004 |
| End of production | June, 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 7.1 l/100 km (33.1 US mpg, 39.8 UK mpg, 14.1 km/l) |
| CO2 emissions (NEDC) | 189 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.3 sec |
| Acceleration 0 – 62 mph | 9.3 sec |
| Acceleration 0 – 60 mph | 8.8 sec |
| Maximum speed | 224 km/h (139.19 mph) |
| Emission standard | Euro 3 |
| Weight-to-power ratio | 9.3 kg/Hp, 107.9 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 254 Nm/tonne |
| Power | 170 Hp @ 4200 rpm |
| Power per litre | 63.3 Hp/l |
| Torque | 400 Nm @ 1600-2800 rpm (295.02 lb.-ft. @ 1600-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 612.962 |
| Engine displacement | 2685 cm3 (163.85 cu. in.) |
| Number of cylinders | 5 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 18:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 1575 kg (3472.28 lbs.) |
| Max. weight | 2175 kg (4795.05 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Trunk (boot) space – minimum | 470 l (16.6 cu. ft.) |
| Trunk (boot) space – maximum | 1384 l (48.88 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.) |
| Length | 4541 mm (178.78 in.) |
| Width | 1728 mm (68.03 in.) |
| Width including mirrors | 1980 mm (77.95 in.) |
| Height | 1466 mm (57.72 in.) |
| Wheelbase | 2715 mm (106.89 in.) |
| Front track | 1493 mm (58.78 in.) |
| Rear (Back) track | 1464 mm (57.64 in.) |
| Front overhang | 755 mm (29.72 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle (turning diameter) | 10.76 m (35.3 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 | 6 gears, 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 Steering |
| Tires size | 205/55 R 16 V |
| Wheel rims size | 7 J x 16 H 2 |
Powertrain & Engine Architecture
The C 270 CDI is powered by the OM 612.962, a 2.7-liter inline-five cylinder diesel engine. This engine was a hallmark of Mercedes-Benz’s diesel technology during the early 2000s, known for its robust construction and relatively quiet operation for a diesel. The engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A turbocharger with an intercooler further enhances performance by forcing more air into the cylinders. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to efficient gas exchange. The 6-speed manual transmission was standard, providing a good balance between fuel economy and driver control. The engine’s longitudinal mounting allowed for a rear-wheel-drive configuration, a traditional layout for Mercedes-Benz passenger cars.
Driving Characteristics
The C 270 CDI, with its 170 horsepower and 400 Nm (295 lb-ft) of torque, offered a respectable level of performance for a diesel estate. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 9.3 seconds. While not a sports car, the engine provided ample torque from low RPMs, making it well-suited for relaxed cruising and effortless overtaking. The 6-speed manual transmission allowed drivers to keep the engine in its optimal power band. Compared to the more powerful C 320 CDI, the C 270 CDI felt less urgent in acceleration, but it offered better fuel economy. The manual gearbox provided a more engaging driving experience than the optional automatic transmission, which could sometimes feel sluggish.
Equipment & Trim Levels
The C 270 CDI T-modell typically came equipped with features such as automatic climate control, power windows, central locking, and an audio system. Standard interior upholstery was cloth, with leather options available as an upgrade. Alloy wheels were also a common feature. Optional extras included a sunroof, navigation system, heated seats, and parking sensors. The facelifted S203 models benefited from revised interior trim and updated infotainment systems compared to the pre-facelift versions. The overall interior ambiance aimed for a balance of comfort and sophistication, typical of Mercedes-Benz vehicles.
Chassis & Braking
The S203 C-Class T-modell featured an independent suspension system all around. The front suspension utilized McPherson struts with a transverse stabilizer bar, while the rear employed a multi-link setup, also with a stabilizer bar. This configuration provided a comfortable ride and good handling characteristics. The C 270 CDI was equipped with ventilated disc brakes at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard, enhancing safety during emergency braking. The steering was a rack-and-pinion system with hydraulic power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The C 270 CDI T-modell was generally well-received by automotive critics. It was praised for its spacious interior, comfortable ride, and fuel efficiency. The diesel engine was noted for its refinement and strong torque output. However, some critics found the styling to be somewhat conservative. Compared to rivals like the Audi A4 Avant and BMW 3 Series Touring, the C-Class T-modell offered a more luxurious interior and a more comfortable ride. The C 270 CDI’s fuel economy was competitive with other diesel estates in its class, and its reliability was generally considered to be good.
Legacy
The OM 612 engine family, including the OM 612.962 found in the C 270 CDI, has proven to be remarkably durable. Properly maintained examples can accumulate high mileage with relatively few major issues. The C 270 CDI T-modell remains a popular choice in the used car market, particularly among buyers seeking a practical and reliable estate car. While modern diesel technology has advanced significantly, the S203 C-Class T-modell continues to offer a compelling combination of comfort, practicality, and fuel efficiency, making it a desirable classic for many enthusiasts.
