The Mercedes-Benz C 240 V6, part of the W203 facelift generation produced from April 2004 to June 2005, represented a compelling blend of performance and luxury within the C-Class lineup. Positioned as a mid-range offering, it slotted between the more economical four-cylinder models and the higher-performance C 320 and C 55 AMG variants. The W203 facelift, introduced in 2004, brought significant cosmetic and technological updates to the C-Class, addressing criticisms leveled at the pre-facelift models and enhancing the car’s overall refinement. This particular variant aimed to provide a smooth, comfortable driving experience with a respectable level of power, appealing to buyers who prioritized a balanced package over outright sportiness.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W203, facelift 2004) |
| Type (Engine) | C 240 V6 (170 Hp) |
| Start of production | April, 2004 |
| End of production | June, 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (NEDC) | 16 l/100 km (14.7 US mpg, 17.7 UK mpg, 6.3 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 7.6 l/100 km (30.9 US mpg, 37.2 UK mpg, 13.2 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| CO2 emissions (NEDC) | 257 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.2 sec |
| Acceleration 0 – 62 mph | 9.2 sec |
| Acceleration 0 – 60 mph | 8.7 sec |
| Maximum speed | 235 km/h (146.02 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.6 kg/Hp, 116.4 Hp/tonne |
| Weight-to-torque ratio | 6.1 kg/Nm, 164.4 Nm/tonne |
| Power | 170 Hp @ 5500 rpm |
| Power per litre | 65.5 Hp/l |
| Torque | 240 Nm @ 4500 rpm (177.01 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 112.912 |
| Engine displacement | 2597 cm3 (158.48 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 89.9 mm (3.54 in.) |
| Piston Stroke | 68.2 mm (2.69 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 3 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 1460 kg (3218.75 lbs.) |
| Max. weight | 2015 kg (4442.31 lbs.) |
| Max load | 555 kg (1223.57 lbs.) |
| Trunk (boot) space – minimum | 455 l (16.07 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%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4526 mm (178.19 in.) |
| Width | 1728 mm (68.03 in.) |
| Width including mirrors | 1980 mm (77.95 in.) |
| Height | 1427 mm (56.18 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 | 1056 mm (41.57 in.) |
| Drag coefficient (Cd) | 0.27 |
| 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 240 V6 was powered by the M112.912 engine, a 2.6-liter naturally aspirated V6. This engine was a significant departure from the earlier inline-six engines used in the C-Class, offering improved smoothness and refinement. The M112 featured a three-valve-per-cylinder design (two intake, one exhaust) and a relatively high 10.5:1 compression ratio. Fuel delivery was handled by a multi-port fuel injection system, providing precise fuel metering for optimal combustion. The engine’s architecture was longitudinal, meaning it was mounted lengthwise in the engine bay, driving the rear wheels. The six-speed manual transmission offered a good balance between performance and fuel efficiency, with gear ratios tailored to maximize the engine’s torque output.
Driving Characteristics
The C 240 V6 with the manual transmission provided a reasonably engaging driving experience. While not as overtly sporty as the C 320 or AMG models, it offered sufficient power for comfortable highway cruising and spirited backroad driving. Acceleration from 0-60 mph took around 8.7 seconds, and the car could reach a top speed of 146 mph. The V6 engine delivered a smooth and linear power delivery, with peak torque available at 4500 rpm. The six-speed manual allowed drivers to keep the engine in its sweet spot, maximizing performance. Compared to the automatic transmission option, the manual offered more control and a more direct connection to the drivetrain. However, the automatic provided a more relaxed driving experience, particularly in urban traffic.
Equipment & Trim Levels
The C 240 V6 typically came standard with features such as automatic climate control, power windows and locks, a multi-function steering wheel, and a basic audio system. Upholstery was usually cloth, but leather was available as an option. Common optional extras included a sunroof, upgraded audio systems, navigation, and parking sensors. The interior design was typical of Mercedes-Benz at the time, emphasizing quality materials and a comfortable, ergonomic layout. The facelifted W203 models also benefited from improved interior trim and detailing compared to the pre-facelift versions.
Chassis & Braking
The W203 C-Class featured an independent suspension system at all four corners. The front suspension utilized a McPherson strut design, while the rear employed a multi-link setup. This configuration provided a good balance between ride comfort and handling. The C 240 V6 was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock braking system (ABS) was standard, enhancing braking performance and stability. The chassis was designed to provide a stable and predictable driving experience, with a focus on comfort and refinement.
Market Reception & Comparison
The C 240 V6 was generally well-received by automotive critics. It was praised for its smooth engine, comfortable ride, and well-appointed interior. However, some critics noted that it lacked the outright performance of its more powerful siblings. Compared to the C 230 Kompressor (supercharged four-cylinder), the C 240 V6 offered a more refined and powerful driving experience, but at a higher price point. The C 320 provided even more performance, but was significantly more expensive. Fuel economy was reasonable for a V6 engine of this era, but not exceptional. Reliability was generally good, although some owners reported issues with the electronic systems.
Legacy
The M112 engine family, including the 2.6-liter V6 found in the C 240, is known for its durability and longevity. Properly maintained examples can still provide reliable service today. In the used car market, the C 240 V6 represents a good value proposition for buyers seeking a comfortable and well-built luxury sedan. While it may not be the fastest or most fuel-efficient option, it offers a compelling combination of performance, refinement, and reliability. The W203 facelift models, in general, are considered to be more desirable than the pre-facelift versions due to their improved quality and features.
