The Mercedes-Benz C-Class T-modell (S203) AMG C 30 CDI Automatic, produced from February 2003 to March 2004, represented a performance-oriented variant of the popular C-Class estate (wagon). Positioned as a premium offering within the S203 range, it combined the practicality of a wagon with the power of a high-output diesel engine. This model aimed to appeal to buyers seeking a blend of performance, luxury, and cargo capacity. It was built on the W203 platform, specifically designed to offer a more dynamic driving experience than its predecessor.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S203) |
| Type | AMG C 30 CDI (231 Hp) Automatic |
| Start of production | February, 2003 |
| End of production | March, 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 10.4 l/100 km (22.6 US mpg, 27.2 UK mpg, 9.6 km/l) |
| Fuel consumption (extra urban) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (combined) | 7.9 l/100 km (29.8 US mpg, 35.8 UK mpg, 12.7 km/l) |
| CO2 emissions | 210 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7 sec |
| Acceleration 0 – 62 mph | 7 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 3 |
| Weight-to-power ratio | 7.1 kg/Hp, 141.7 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 331.3 Nm/tonne |
| Power | 231 Hp @ 3800 rpm |
| Power per litre | 78.3 Hp/l |
| Torque | 540 Nm @ 2000-2500 rpm (398.28 lb.-ft. @ 2000-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 612.990 |
| Engine displacement | 2950 cm3 (180.02 cu. in.) |
| Number of cylinders | 5 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 97 mm (3.82 in.) |
| Compression ratio | 16.5:1 |
| 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 capacity | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1630 kg (3593.53 lbs.) |
| Max. weight | 2210 kg (4872.22 lbs.) |
| Max load | 580 kg (1278.68 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.) |
| Length | 4541 mm (178.78 in.) |
| Width | 1728 mm (68.03 in.) |
| Width including mirrors | 1980 mm (77.95 in.) |
| Height | 1455 mm (57.28 in.) |
| Wheelbase | 2715 mm (106.89 in.) |
| Front track | 1494 mm (58.82 in.) |
| Rear track | 1474 mm (58.03 in.) |
| Front overhang | 755 mm (29.72 in.) |
| Rear overhang | 1071 mm (42.17 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 10.76 m (35.3 ft.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Front tires | 225/45 R 17 91 Y |
| Rear tires | 245/40 R 17 91 Y |
| Front wheel rims | 7.5 J x 17 H 2 |
| Rear wheel rims | 8.5 J x 17 H 2 |
Powertrain & Engine Architecture
The heart of the AMG C 30 CDI T-modell was the OM 612.990, a 3.0-liter inline-five cylinder diesel engine. This engine was a significant upgrade over the standard C-Class diesel offerings. It featured a sophisticated common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A variable geometry turbocharger with an intercooler further enhanced performance, providing increased boost across a wider RPM range. The engine utilized a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its high output. The five-speed automatic transmission was specifically tuned to handle the engine’s substantial 540 Nm (398 lb-ft) of torque, offering smooth shifts and responsive acceleration.
Driving Characteristics
The AMG C 30 CDI T-modell offered a noticeably different driving experience compared to lower-powered C-Class wagons. The 231 horsepower and ample torque provided brisk acceleration, with a 0-60 mph time of around 6.7 seconds. While not a sports car, the wagon felt surprisingly agile for its size. The automatic transmission, while smooth, wasn’t particularly quick to downshift, but the engine’s strong low-end torque compensated for this. Compared to the manual transmission versions, the automatic offered greater convenience, especially in city driving, but sacrificed some driver engagement. The higher output versions, like the C32 AMG, offered significantly more performance, but at a substantial price premium.
Equipment & Trim Levels
The AMG C 30 CDI T-modell came well-equipped as standard. Interior features typically included leather upholstery, automatic climate control, and a premium audio system. Exterior features included AMG-specific body styling, including unique front and rear bumpers, side skirts, and alloy wheels. Optional extras included a sunroof, navigation system, and upgraded interior trim options. The overall interior ambiance was one of understated luxury, typical of Mercedes-Benz.
Chassis & Braking
The S203 C-Class featured an independent suspension setup at all four corners. The front utilized a McPherson strut design, while the rear employed a multi-link suspension. This configuration provided a good balance between ride comfort and handling. The AMG C 30 CDI was equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock Braking System (ABS) was standard. The suspension was tuned to handle the increased weight and power of the engine, offering a more controlled and stable ride compared to the standard C-Class wagons.
Market Reception & Comparison
The AMG C 30 CDI T-modell was generally well-received by automotive critics. It was praised for its strong performance, comfortable ride, and practical wagon body style. However, some critics noted that the automatic transmission could feel slightly sluggish at times. Compared to other trims, such as the C220 CDI or C270 CDI, the C 30 CDI offered a significant performance boost, but at a higher price point and with slightly lower fuel economy. Its fuel economy, around 30 mpg combined, was still respectable for a vehicle of its size and performance.
Legacy
The OM 612 engine, while robust, is known to require diligent maintenance, particularly regarding the fuel injection system and turbocharger. The five-speed automatic transmission is generally reliable, but can be expensive to repair if issues arise. Today, the AMG C 30 CDI T-modell is considered a desirable used car, appealing to enthusiasts seeking a unique and capable wagon. Well-maintained examples command a premium price, reflecting their rarity and performance potential. Its blend of practicality, performance, and luxury has ensured its continued appeal in the used car market.
