The Mercedes-Benz C 180 CDI, equipped with the 7G-TRONIC PLUS automatic transmission, was a key variant within the W204 C-Class facelift range produced from 2011 to 2014. Positioned as an entry-level diesel offering in many European markets, it provided a balance of fuel efficiency and comfortable cruising, appealing to buyers prioritizing economy over outright performance. This model represented Mercedes-Benz’s commitment to offering a refined and technologically advanced compact executive car with a focus on diesel power, a popular choice in Europe. The W204 facelift brought significant updates to the C-Class, including revised styling, improved interior quality, and updated engine options, with the C 180 CDI benefitting from these enhancements.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class (W204, facelift 2011) |
| Type (Engine) | C 180 CDI (120 Hp) 7G-TRONIC PLUS |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 6.1-6.4 l/100 km (38.6 – 36.8 US mpg, 46.3 – 44.1 UK mpg, 16.4 – 15.6 km/l) |
| Fuel consumption (extra urban) | 4.3-4.7 l/100 km (54.7 – 50 US mpg, 65.7 – 60.1 UK mpg, 23.3 – 21.3 km/l) |
| Fuel consumption (combined) | 4.9-5.3 l/100 km (48 – 44.4 US mpg, 57.6 – 53.3 UK mpg, 20.4 – 18.9 km/l) |
| CO2 emissions | 129-140 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec |
| Maximum speed | 206 km/h (128 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12.6 kg/Hp, 79.2 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 198 Nm/tonne |
| Power | 120 Hp @ 2800-4600 rpm |
| Power per litre | 56 Hp/l |
| Torque | 300 Nm @ 1400-2800 rpm (221.27 lb.-ft. @ 1400-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.913 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 99 mm (3.9 in.) |
| Compression ratio | 16.2:1 |
| 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) |
| Kerb Weight | 1515 kg (3340 lbs.) |
| Max. weight | 2105 kg (4640.73 lbs.) |
| Max load | 590 kg (1300.73 lbs.) |
| Trunk (boot) space – minimum | 475 l (16.77 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 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 | 4591 mm (180.75 in.) |
| Width | 1770 mm (69.69 in.) |
| Width including mirrors | 2008 mm (79.06 in.) |
| Height | 1447 mm (56.97 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1549 mm (60.98 in.) |
| Rear (Back) track | 1552 mm (61.1 in.) |
| Front overhang | 775 mm (30.51 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle (turning diameter) | 10.84 m (35.56 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 | 7 gears, automatic transmission G-TRONIC PLUS |
| 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 | 195/60 R16; 205/55 R16; 225/45 R17 |
| Wheel rims size | 6J x 16; 7J x 16; 7.5J x 17 |
Powertrain & Engine Architecture
The C 180 CDI utilized the OM 651.913 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay of the Mercedes-Benz lineup, known for its durability and efficiency. It featured a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A turbocharger with an intercooler further enhanced performance, providing 120 horsepower at 2800-4600 rpm and a respectable 300 Nm (221 lb-ft) of torque between 1400-2800 rpm. The engine employed a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its smooth operation and power delivery. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, was a key component, offering smooth and efficient gear changes. This transmission was known for its adaptability and contributed significantly to the car’s fuel economy.
Driving Characteristics
The C 180 CDI with the 7G-TRONIC PLUS offered a comfortable and refined driving experience. While not a performance-oriented model, the engine provided adequate power for everyday driving and highway cruising. Acceleration from 0-100 km/h (0-62 mph) took around 10.5 seconds. The 7G-TRONIC PLUS transmission was programmed for fuel efficiency, often upshifting quickly to maintain low engine speeds. Compared to the more powerful C 220 CDI or C 250 CDI variants, the C 180 CDI felt less responsive, particularly during overtaking maneuvers. However, the automatic transmission’s smooth operation and the engine’s ample low-end torque made it a pleasant daily driver. The gear ratios were optimized for fuel economy, resulting in a relaxed driving experience at highway speeds.
Equipment & Trim Levels
The C 180 CDI typically came with a reasonable level of standard equipment. This included features like air conditioning, a multi-function steering wheel, power windows, and an audio system. Interior upholstery was generally cloth, although leather options were available as upgrades. The dashboard layout was typical of the W204 C-Class, with a focus on functionality and a premium feel. Optional extras included a sunroof, navigation system, upgraded audio, and parking sensors. Trim levels varied depending on the market, but generally, the C 180 CDI represented the entry point into the C-Class diesel range.
Chassis & Braking
The C 180 CDI utilized a McPherson strut front suspension and a multi-link independent rear suspension. This setup provided a good balance of ride comfort and handling. Stabilizer bars were fitted to both axles to reduce body roll during cornering. The braking system consisted of ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard. The suspension was tuned for comfort, prioritizing a smooth ride over sporty handling. The weight distribution was reasonably balanced, contributing to predictable handling characteristics.
Market Reception & Comparison
The C 180 CDI was well-received in European markets where diesel engines were popular. Critics praised its fuel efficiency and comfortable ride. However, some noted its lack of outright performance compared to higher-powered C-Class variants. Compared to the C 220 CDI, the C 180 CDI offered lower running costs but sacrificed some performance. The C 220 CDI was often considered a more well-rounded option for those seeking a balance of economy and power. The C 180 CDI’s fuel economy figures of 4.9-5.3 l/100 km (48-44.4 US mpg) were highly competitive in its class.
Legacy
The OM 651 engine family, including the 2.1-liter unit found in the C 180 CDI, has proven to be remarkably durable and reliable. These engines are known to withstand high mileage with proper maintenance. In the used car market, the C 180 CDI remains a popular choice for buyers seeking an economical and reliable compact executive car. While older examples may require attention to wear-and-tear items, the engine itself is generally considered robust. The 7G-TRONIC PLUS transmission has also proven to be reliable, although regular fluid changes are essential for long-term health. The C 180 CDI represents a solid and practical option for those seeking a well-built and fuel-efficient Mercedes-Benz.
