The Mercedes-Benz B-Class W246 facelift, specifically the B 180 CDI BlueEFFICIENCY Edition producing 109 horsepower, was a key offering in the compact multi-purpose vehicle (MPV) segment from 2014 to 2018. Positioned as an entry-level diesel variant within the W246 range, it aimed to provide fuel efficiency and practicality for family-oriented buyers. This model represented a mid-cycle refresh of the second-generation B-Class, incorporating styling updates and revised engine options. It was primarily marketed in Europe, where compact MPVs enjoyed significant popularity, offering a blend of hatchback convenience and increased interior space.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-Class |
| Generation | B-Class (W246 facelift 2014) |
| Type | B 180 CDI (109 Hp) BlueEFFICIENCY Edition |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 4.3 l/100 km (54.7 US mpg, 65.7 UK mpg, 23.3 km/l) |
| Fuel consumption (extra urban) | 3.2 l/100 km (73.5 US mpg, 88.3 UK mpg, 31.3 km/l) |
| Fuel consumption (combined) | 3.6 l/100 km (65.3 US mpg, 78.5 UK mpg, 27.8 km/l) |
| CO2 emissions | 94 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 11.6 sec |
| Acceleration 0 – 62 mph | 11.6 sec |
| Acceleration 0 – 60 mph | 11 sec |
| Maximum speed | 190 km/h (118.06 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12.8 kg/Hp, 78.1 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 186.4 Nm/tonne |
| Power | 109 Hp @ 4000 rpm |
| Power per litre | 74.6 Hp/l |
| Torque | 260 Nm @ 1750-2500 rpm (191.77 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | OM 607.951 |
| Engine displacement | 1461 cm3 (89.16 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 15.5:1 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant capacity | 6.3 l (6.66 US qt | 5.54 UK qt) |
| Kerb Weight | 1395 kg (3075.45 lbs.) |
| Max. weight | 1900 kg (4188.78 lbs.) |
| Max load | 505 kg (1113.33 lbs.) |
| Trunk (boot) space – minimum | 488 l (17.23 cu. ft.) |
| Trunk (boot) space – maximum | 1547 l (54.63 cu. ft.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 UK gal) |
| Length | 4393 mm (172.95 in.) |
| Width | 1786 mm (70.31 in.) |
| Height | 1557 mm (61.3 in.) |
| Wheelbase | 2699 mm (106.26 in.) |
| Front track | 1552 mm (61.1 in.) |
| Rear track | 1549 mm (60.98 in.) |
| Ride height (ground clearance) | 98 mm (3.86 in.) |
| Minimum turning circle | 11 m (36.09 ft.) |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
Powertrain & Engine Architecture
The B 180 CDI BlueEFFICIENCY Edition was powered by the OM607.951 engine, a 1.5-liter inline-four cylinder diesel engine. This engine was part of Mercedes-Benz’s family of compact diesel engines, known for their efficiency and relatively low emissions. It featured a turbocharger with an intercooler to boost power output and improve combustion efficiency. The engine utilized a common rail direct fuel injection system, delivering fuel directly into the combustion chamber at high pressure for optimized fuel atomization and cleaner burning. The engine’s 15.5:1 compression ratio was typical for a diesel engine, contributing to its thermal efficiency. The 6-speed manual transmission was standard, providing a balance between fuel economy and driver control. The engine was transversely mounted in the front of the vehicle, driving the front wheels.
Driving Characteristics
The 109 hp and 260 Nm (192 lb-ft) of torque delivered by the B 180 CDI provided adequate, though not exhilarating, performance. Acceleration from 0 to 100 km/h (0-62 mph) took around 11.6 seconds, and the top speed was 190 km/h (118 mph). The engine’s peak torque was available from 1750-2500 rpm, offering good responsiveness in everyday driving situations. Compared to the more powerful B 200 CDI or petrol-powered variants, the B 180 CDI prioritized fuel economy over outright speed. The manual transmission allowed for precise gear selection, but the relatively long gearing emphasized fuel efficiency at the expense of spirited acceleration. The driving experience was generally comfortable and refined, typical of a Mercedes-Benz, with a focus on minimizing noise and vibration.
Equipment & Trim Levels
The BlueEFFICIENCY Edition trim level focused on maximizing fuel efficiency and value. Standard equipment typically included air conditioning, a multi-function steering wheel, a basic audio system, and electrically adjustable exterior mirrors. Safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags were standard. Optional extras included a more advanced infotainment system with navigation, parking sensors, a panoramic sunroof, and upgraded interior trim materials. The interior upholstery was typically cloth, with options for leather upgrades. The dashboard layout was functional and modern, with a focus on ergonomics.
Chassis & Braking
The B-Class W246 featured an independent suspension system on both the front and rear axles. The front suspension utilized McPherson struts with coil springs and an anti-roll bar, while the rear suspension employed a multi-link setup with coil springs. This configuration provided a comfortable ride and good handling characteristics. The braking system consisted of ventilated discs on the front wheels and solid discs on the rear wheels. ABS (Anti-lock Braking System) was standard, enhancing braking performance and stability. The steering system was a rack-and-pinion type, providing precise and responsive steering feel.
Market Reception & Comparison
The B 180 CDI BlueEFFICIENCY Edition was well-received by critics for its fuel efficiency and practicality. It offered a compelling alternative to traditional hatchbacks and small SUVs, particularly for buyers seeking a more spacious and versatile vehicle. Compared to the higher-output B 200 CDI, the B 180 CDI offered lower running costs but sacrificed some performance. Its fuel economy of around 3.6 l/100 km (65.3 US mpg) was a significant selling point, making it an attractive option for drivers covering long distances. Reliability was generally good, although, like all diesel engines, it required regular maintenance to ensure optimal performance and longevity.
Legacy
The Mercedes-Benz B 180 CDI BlueEFFICIENCY Edition remains a popular choice in the used car market, particularly for those seeking a fuel-efficient and practical compact MPV. The OM607 engine, while not known for being exceptionally powerful, is generally considered reliable if properly maintained. Common issues include diesel particulate filter (DPF) clogging, particularly on vehicles used primarily for short journeys. However, with regular servicing and careful driving, these engines can provide many years of reliable service. The W246 B-Class, and specifically this variant, represents a practical and economical option for families and individuals seeking a versatile and well-built vehicle.
