The Mercedes-Benz B 180d, equipped with the 7G-DCT dual-clutch transmission, was a key variant within the W247 B-Class range produced from December 2018 to October 2020. Positioned as an entry-level diesel option, it aimed to deliver fuel efficiency and practicality for everyday use. The W247 B-Class, launched as a successor to the W246, represented a significant step forward in terms of interior refinement, technology, and driving dynamics, moving the compact MPV further upmarket. This particular 180d model served as a gateway into the B-Class lineup, offering a balance between affordability and the Mercedes-Benz brand experience.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-class |
| Generation | B-class (W247) |
| Type (Engine) | B 180d (116 Hp) 7G-DCT |
| Start of production | December, 2018 |
| End of production | October, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 4.5 l/100 km (52.3 US mpg, 62.8 UK mpg, 22.2 km/l) |
| Fuel consumption at very high speed (WLTP) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| CO2 emissions (WLTP) | 119-140 g/km |
| Fuel consumption (economy) – urban | 4.2-4.3 l/100 km (56 – 54.7 US mpg, 67.3 – 65.7 UK mpg, 23.8 – 23.3 km/l) |
| Fuel consumption (economy) – extra urban | 3.7-3.9 l/100 km (63.6 – 60.3 US mpg, 76.3 – 72.4 UK mpg, 27 – 25.6 km/l) |
| Fuel consumption (economy) – combined | 3.9-4.0 l/100 km (60.3 – 58.8 US mpg, 72.4 – 70.6 UK mpg, 25.6 – 25 km/l) |
| CO2 emissions | 102-107 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.7 sec |
| Acceleration 0 – 62 mph | 10.7 sec |
| Acceleration 0 – 60 mph | 10.2 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Emission standard | Euro 6d – TEMP |
| Weight-to-power ratio | 12.8 kg/Hp, 78.1 Hp/tonne |
| Weight-to-torque ratio | 5.7 kg/Nm, 175.1 Nm/tonne |
| Power | 116 Hp |
| Power per litre | 79.4 Hp/l |
| Torque | 260 Nm @ 1750-2750 rpm (191.77 lb.-ft. @ 1750-2750 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | OM 608.915 |
| Engine displacement | 1461 cm3 (89.16 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Coolant | 12.1 l (12.79 US qt | 10.65 UK qt) |
| Kerb Weight | 1485 kg (3273.86 lbs.) |
| Max. weight | 2010 kg (4431.29 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space – minimum | 445 l (15.72 cu. ft.) |
| Trunk (boot) space – maximum | 1530 l (54.03 cu. ft.) |
| Fuel tank capacity | 43 l (11.36 US gal | 9.46 UK gal) |
| Permitted trailer load with brakes (12%) | 1400 kg (3086.47 lbs.) |
| Permitted trailer load without brakes | 740 kg (1631.42 lbs.) |
| Length | 4419 mm (173.98 in.) |
| Width | 1796 mm (70.71 in.) |
| Height | 1562 mm (61.5 in.) |
| Wheelbase | 2729 mm (107.44 in.) |
| Front track | 1567 mm (61.69 in.) |
| Front overhang | 914 mm (35.98 in.) |
| Rear overhang | 776 mm (30.55 in.) |
| Approach angle | 13.4° |
| Departure angle | 17.2° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission DCT |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
Powertrain & Engine Architecture
The B 180d utilized Mercedes-Benz’s OM 608.915 engine, a 1.5-liter inline-four cylinder diesel. This engine is part of the modular OM 608 family, known for its compact design and efficiency. It features a turbocharger with an intercooler to boost power output and improve combustion. The engine employs a common-rail direct fuel injection system, delivering fuel at extremely high pressure for optimized atomization and cleaner combustion. The engine produces 116 horsepower and 260 Nm (191.77 lb-ft) of torque between 1750 and 2750 rpm. This torque curve provides good low-end responsiveness, suitable for everyday driving. The 7G-DCT (7-speed dual-clutch transmission) was a crucial component, offering quick and smooth gear changes. This transmission is known for its efficiency and responsiveness compared to traditional automatic transmissions.
Driving Characteristics
The B 180d 7G-DCT offered a comfortable and refined driving experience. While not designed for outright performance, the engine provided adequate power for typical commuting and highway driving. Acceleration from 0 to 60 mph took around 10.2 seconds, and the top speed was limited to 124.27 mph. The 7G-DCT transmission contributed to a smooth and seamless driving experience, with quick shifts and minimal interruption in power delivery. Compared to the more powerful B 200d or petrol variants, the 180d felt less eager to accelerate, but its fuel economy advantage was significant. The gear ratios were tuned for efficiency, prioritizing fuel savings over outright performance. The front-wheel-drive configuration provided predictable handling, although it lacked the all-weather capability of the optional 4MATIC all-wheel-drive system.
Equipment & Trim Levels
The B 180d typically came standard with features such as automatic climate control, a touchscreen infotainment system with Bluetooth connectivity, and a suite of safety features including ABS, ESP, and multiple airbags. Interior upholstery was generally fabric, with options for leather upgrades. Standard dashboard configuration included analog gauges with a central color display. Optional extras included navigation, a panoramic sunroof, parking assist, and upgraded sound systems. The trim level could vary depending on the market, but generally, the B 180d represented the entry point to the B-Class range, offering a good level of equipment for the price.
Chassis & Braking
The W247 B-Class featured a MacPherson strut front suspension and a multi-link rear suspension, providing a comfortable ride and good handling characteristics. The B 180d, being the lighter variant, often utilized smaller stabilizer bars compared to higher-performance models. The braking system consisted of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) were standard features, enhancing safety and control. The suspension was tuned for comfort, prioritizing ride quality over sporty handling.
Market Reception & Comparison
The B 180d was generally well-received by critics as a practical and fuel-efficient option within the B-Class range. Its main strengths were its low running costs and comfortable ride. Compared to the B 200d, the 180d offered lower fuel consumption but less power. The petrol-powered B 180 offered similar power but significantly lower fuel economy. The B 180d appealed to buyers prioritizing economy and practicality over performance. Reliability reports have generally been positive, with the OM 608 engine proving to be a robust and dependable unit.
Legacy
The B 180d 7G-DCT has established itself as a reliable and economical used car option. The OM 608 engine is known for its longevity, and the 7G-DCT transmission, while requiring regular servicing, has proven to be durable. The W247 B-Class, in general, has gained a reputation for its refined interior and practical design. The B 180d remains a popular choice for buyers seeking a comfortable, fuel-efficient, and well-equipped compact MPV. Its relatively simple engine and transmission configuration contribute to lower maintenance costs compared to more complex variants.
