The Mercedes-Benz C-Class T-modell (S203) C 270 CDI Automatic, produced from January 2001 to March 2004, represents a compelling blend of practicality and diesel efficiency within the compact executive estate car segment. Positioned as a mid-range offering within the S203 series, it catered to buyers seeking the versatility of a wagon with the refined driving experience and fuel economy characteristic of a modern diesel engine. This variant occupied a space between the lower-powered C 200 CDI and the more performance-oriented C 320 CDI models, appealing to those prioritizing a balance of cost-effectiveness and usable power. It was primarily sold in the European market, where diesel engines held a significant market share, and offered a sophisticated alternative to gasoline-powered rivals.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S203) |
| Type (Engine) | C 270 CDI (170 Hp) Automatic |
| Start of production | January, 2001 |
| End of production | March, 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 9.9 l/100 km (23.8 US mpg, 28.5 UK mpg, 10.1 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 6 l/100 km (39.2 US mpg, 47.1 UK mpg, 16.7 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| CO2 emissions (NEDC) | 198 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.4 sec |
| Acceleration 0 – 62 mph | 9.4 sec |
| Acceleration 0 – 60 mph | 8.9 sec |
| Maximum speed | 220 km/h (136.7 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 @ 1800-2600 rpm (295.02 lb.-ft. @ 1800-2600 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 | 5 gears, automatic 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 91 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 cornerstone of Mercedes-Benz’s diesel offerings in 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 and reduced emissions. A turbocharger with an intercooler further enhances performance by forcing more air into the cylinders. The engine’s DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, contributes to efficient gas exchange. The five-speed automatic transmission, a conventional torque converter type, was specifically calibrated to suit the engine’s torque characteristics. While not offering the lightning-fast shifts of modern transmissions, it provided smooth and comfortable gear changes, prioritizing refinement over outright performance.
Driving Characteristics
The C 270 CDI Automatic offered a relaxed and refined driving experience. With 170 horsepower and a substantial 400 Nm (295 lb-ft) of torque available from 1800-2600 rpm, it provided ample power for everyday driving and comfortable highway cruising. Acceleration to 60 mph took approximately 8.9 seconds, which was respectable for the era and vehicle type. However, it was noticeably slower than the C 320 CDI, which boasted a more powerful six-cylinder engine. The automatic transmission, while smooth, did contribute to a slight reduction in responsiveness compared to the available manual gearbox. Gear ratios were optimized for fuel efficiency and comfortable cruising, rather than aggressive acceleration. The rear-wheel drive configuration provided balanced handling, although it wasn’t particularly sporty.
Equipment & Trim Levels
The C 270 CDI Automatic typically came equipped with a respectable level of standard features. These included automatic climate control, power windows and mirrors, a multi-function steering wheel, and a basic audio system. Interior upholstery was generally cloth, although leather options were available. Optional extras included a sunroof, upgraded audio systems, navigation, and parking sensors. Trim levels varied slightly depending on the market, but generally offered a progression of features and luxury appointments. The estate body style itself added to the practicality, offering a generous cargo capacity of 470-1384 liters (16.6-48.88 cu ft) with the rear seats up or folded down.
Chassis & Braking
The S203 C-Class featured an independent suspension setup, with McPherson struts at the front and a multi-link suspension at the rear. This configuration provided a good balance of ride comfort and handling. Stabilizer bars were fitted to both axles to reduce body roll. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) as standard. The braking system was adequate for the vehicle’s weight and performance, providing confident stopping power in most conditions.
Market Reception & Comparison
The C 270 CDI Automatic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined diesel engine. However, some reviewers noted that the automatic transmission could feel slightly sluggish, and the performance wasn’t as exhilarating as some of its rivals. Compared to the C 200 CDI, the C 270 CDI offered a significant power upgrade, making it more suitable for long-distance driving and carrying passengers. Against the C 320 CDI, it represented a more affordable option, albeit with a noticeable performance deficit. Fuel economy was a key strength, consistently achieving around 31.8 US mpg in combined driving.
Legacy
The OM 612 engine family, including the 2.7-liter variant found in the C 270 CDI, has proven to be remarkably durable. With proper maintenance, these engines can reliably exceed 200,000 miles. However, potential issues include injector failures and wear on the turbocharger. In the used car market today, the C 270 CDI Automatic represents a relatively affordable entry point into Mercedes-Benz ownership. Its combination of practicality, fuel efficiency, and durability makes it a popular choice for those seeking a reliable and economical estate car. While not a performance icon, it remains a testament to Mercedes-Benz’s engineering prowess and commitment to diesel technology.
