The Mercedes-Benz B 180d, specifically the variant produced from October 2022 as part of the W247 facelift, represents an entry-level diesel option within the third generation of the B-Class compact multi-purpose vehicle (MPV). Positioned as a fuel-efficient and practical choice, this model combines a 1.95-liter turbocharged diesel engine with an 8-speed dual-clutch transmission (8G-DCT). It caters to buyers prioritizing economy and usability over outright performance, particularly in European markets where diesel engines remain popular. The W247 B-Class, and this variant specifically, aims to blend the practicality of a hatchback with the elevated interior and technology expected from the Mercedes-Benz brand.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-class |
| Generation | B-class (W247, facelift 2022) |
| Type (Engine) | B 180d (116 Hp) 8G-DCT |
| Start of production | October, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.2-5.7 l/100 km (45.2 – 41.3 US mpg, 54.3 – 49.6 UK mpg, 19.2 – 17.5 km/l) |
| CO2 emissions (WLTP) | 136-151 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.8 sec |
| Acceleration 0 – 62 mph | 9.8 sec |
| Acceleration 0 – 60 mph | 9.3 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 12.6 kg/Hp, 79.5 Hp/tonne |
| Weight-to-torque ratio | 5.2 kg/Nm, 191.8 Nm/tonne |
| Power | 116 Hp @ 3400 rpm |
| Power per litre | 59.5 Hp/l |
| Torque | 280 Nm (206.52 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | OM 654.920 |
| Engine displacement | 1950 cm3 (119 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Coolant | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1460 kg (3218.75 lbs.) |
| Max. weight | 2075 kg (4574.59 lbs.) |
| Max load | 615 kg (1355.84 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) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1400 kg (3086.47 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4419 mm (173.98 in.) |
| Width with mirrors folded | 1796 mm (70.71 in.) |
| Width including mirrors | 2020 mm (79.53 in.) |
| Height | 1562 mm (61.5 in.) |
| Wheelbase | 2729 mm (107.44 in.) |
| Front track | 1567 mm (61.69 in.) |
| Rear (Back) track | 1558 mm (61.34 in.) |
| Front overhang | 914 mm (35.98 in.) |
| Rear overhang | 776 mm (30.55 in.) |
| Drag coefficient (Cd) | 0.254 |
| Minimum turning circle (turning diameter) | 11 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission G-DCT |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 205/60 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The B 180d utilizes the OM 654.920 engine, a 1.95-liter inline-four cylinder diesel engine. This engine is part of Mercedes-Benz’s modular engine family, known for its lightweight construction and efficiency. It features a cast iron block and aluminum cylinder head, incorporating a turbocharger with an intercooler to boost power and torque. The engine employs a common-rail direct fuel injection system, delivering fuel at extremely high pressure for optimized combustion. The valvetrain is a Double Overhead Camshaft (DOHC) configuration with four valves per cylinder, enhancing volumetric efficiency. The 8G-DCT transmission is a dual-clutch transmission offering quick and smooth gear changes. It features eight forward gears, contributing to both fuel efficiency and responsive acceleration. The transmission is electronically controlled, adapting shift points based on driving conditions and driver input.
Driving Characteristics
The B 180d with the 8G-DCT delivers a comfortable and refined driving experience, prioritizing fuel economy and ease of use. With 116 horsepower and 280 Nm (206.52 lb.-ft.) of torque, acceleration is adequate for everyday driving, achieving 0-60 mph in approximately 9.3 seconds. The 8G-DCT transmission provides seamless gear changes, minimizing disruptions in power delivery. Compared to higher-output B-Class variants like the B 200, the B 180d offers less spirited acceleration. However, the diesel engine provides strong low-end torque, making it well-suited for overtaking maneuvers and driving in urban environments. The gear ratios are tuned for efficiency, keeping engine speeds relatively low during cruising, which contributes to reduced fuel consumption and noise levels.
Equipment & Trim Levels
The B 180d typically comes standard with features such as automatic climate control, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a suite of safety features including automatic emergency braking and lane keeping assist. Interior upholstery is generally fabric, with options for leather upgrades. The dashboard layout is modern and minimalist, reflecting Mercedes-Benz’s design language. Optional extras available for this trim level include a panoramic sunroof, upgraded sound system, and various driver assistance packages. The B 180d often serves as the entry point to the B-Class range, with higher trims offering more luxurious appointments and advanced technology.
Chassis & Braking
The W247 B-Class features a MacPherson strut front suspension and a multi-link rear suspension, providing a comfortable ride and stable handling. The B 180d, being a lower-powered variant, typically utilizes ventilated discs on the front and solid discs on the rear. The braking system is equipped with ABS (Anti-lock Braking System) and electronic brake-force distribution. Electric power steering provides precise and responsive steering feel. The suspension is tuned to prioritize comfort, but still offers adequate body control during cornering. Stabilizer bars are fitted to both the front and rear axles to reduce body roll.
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 diesel engine offered excellent economy, making it an attractive choice for drivers covering long distances. Compared to the petrol-powered B 200, the B 180d provided superior fuel economy but less overall performance. The automatic transmission was praised for its smoothness and responsiveness. However, some reviewers noted that the diesel engine could be somewhat noisy compared to the petrol alternatives. In terms of reliability, the OM 654 engine family has proven to be generally robust, although regular maintenance is crucial for long-term durability.
Legacy
The B 180d (W247) represents a significant step in Mercedes-Benz’s efforts to offer a more efficient and environmentally friendly compact MPV. The OM 654 engine is a key component of this strategy, delivering strong fuel economy and low emissions. On the used car market, these models are sought after for their practicality and fuel efficiency. The 8G-DCT transmission has also proven to be reliable, provided it has been properly maintained. The B 180d continues to be a popular choice for buyers seeking a versatile and economical vehicle, offering a blend of comfort, practicality, and Mercedes-Benz refinement.
