The Mercedes-Benz B-Class (W246) B 180 CDI, producing 109 horsepower, was a key variant within the second generation of the B-Class, produced from 2013 to 2014. Positioned as an entry-level diesel option, it aimed to provide fuel efficiency and practicality within the compact multi-purpose vehicle (MPV) segment. This model was primarily marketed in Europe, where diesel engines held significant market share, offering a balance between running costs and everyday usability. It represented Mercedes-Benz’s attempt to broaden the B-Class’s appeal to a wider customer base seeking economical transportation.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-class |
| Generation | B-class (W246) |
| Type (Engine) | B 180 CDI (109 Hp) |
| Start of production | 2013 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.2-4.9 l/100 km (45.2 – 48 US mpg) |
| Fuel consumption (extra urban) | 4.1-3.7 l/100 km (57.4 – 63.6 US mpg) |
| Fuel consumption (combined) | 4.5-4.1 l/100 km (52.3 – 57.4 US mpg) |
| CO2 emissions | 117-108 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 | 13.2 kg/Hp |
| Weight-to-torque ratio | 5.5 kg/Nm |
| Power | 109 Hp @ 4000 rpm |
| Torque | 260 Nm @ 1750-2500 rpm (191.77 lb.-ft.) |
| 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 |
| Number of valves per cylinder | 4 |
| 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 | 1435-1465 kg (3163.63 – 3229.77 lbs.) |
| Max. weight | 2000 kg (4409.25 lbs.) |
| Max load | 535-565 kg (1179.47 – 1245.61 lbs.) |
| Trunk (boot) space – minimum | 488 l (17.23 cu. ft.) |
| Trunk (boot) space – maximum | 1547 l (54.63 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4359 mm (171.61 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.) |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 6 gears, manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 195/65 R15 |
| Wheel rims size | 15 |
INTRODUCTION
The W246 B-Class, launched in 2011, represented a significant departure from its predecessor, adopting a more conventional hatchback design and a higher quality interior. The B 180 CDI, introduced in 2013, was a diesel-powered variant designed to appeal to European buyers prioritizing fuel economy. It utilized a 1.5-liter turbocharged diesel engine and was offered with either a six-speed manual or a dual-clutch automatic transmission. The 109 hp output positioned it as the entry point to the B-Class diesel range, below the more powerful B 200 CDI and B 220 CDI models.
Powertrain & Engine Architecture
The heart of the B 180 CDI is the OM607.951 1.5-liter inline-four cylinder diesel engine. This engine is a member of Mercedes-Benz’s modular engine family, known for its compact dimensions and efficiency. It features a turbocharger with an intercooler to boost power and torque, and utilizes a common-rail direct fuel injection system. The common-rail system, operating at extremely high pressures, ensures precise fuel delivery and optimized combustion. The engine boasts 4 valves per cylinder and a relatively high compression ratio of 15.5:1, contributing to its thermal efficiency. The B 180 CDI was typically paired with a six-speed manual transmission, but a 7G-DCT dual-clutch automatic transmission was also available as an option. The automatic transmission offered quicker shifts and improved convenience, but at a slight cost to fuel economy.
Driving Characteristics
The B 180 CDI, with its 109 horsepower and 192 lb-ft of torque, provided adequate performance for everyday driving. Acceleration from 0 to 60 mph took around 11 seconds, and top speed was limited to 118 mph. While not particularly sporty, the engine delivered a usable amount of torque from low engine speeds, making it well-suited for urban and highway driving. The manual transmission offered a more engaging driving experience, while the automatic provided smoother gear changes. Compared to the more powerful B 200 CDI, the B 180 CDI felt noticeably slower, particularly during overtaking maneuvers. However, its lower power output also translated to slightly better fuel economy.
Equipment & Trim Levels
The B 180 CDI typically came equipped with a reasonable level of standard features, including air conditioning, power windows, central locking, and a basic audio system. Higher trim levels offered additional features such as alloy wheels, a multi-function steering wheel, cruise control, and a more advanced infotainment system. Optional extras included a panoramic sunroof, leather upholstery, and a navigation system. Interior upholstery was typically cloth, with the option of upgrading to leatherette or leather. The dashboard layout was modern and functional, with a clear instrument cluster and intuitive controls.
Chassis & Braking
The W246 B-Class featured a McPherson strut front suspension and a multi-link rear suspension, providing a comfortable and controlled ride. The B 180 CDI, being the entry-level diesel variant, typically came with smaller wheels and tires compared to the higher-spec models. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) as standard. The steering was electrically assisted, providing light and precise steering feel.
Market Reception & Comparison
The B 180 CDI was generally well-received by critics as a practical and economical MPV. Its fuel efficiency was a major selling point, and its comfortable ride and spacious interior were also praised. However, some reviewers criticized its lack of outright performance and its relatively basic interior trim. Compared to the B 200 CDI, the B 180 CDI offered lower running costs but sacrificed performance. Against competitors like the Volkswagen Golf SV and the Ford C-Max, the B 180 CDI offered a more premium feel and a more refined driving experience, but at a higher price point.
Legacy
The OM607.951 engine, used in the B 180 CDI, proved to be a reliable and durable unit when properly maintained. While diesel engines are inherently more complex than gasoline engines, this particular engine family has a good reputation for longevity. In the used car market, the B 180 CDI remains a popular choice for buyers seeking an economical and practical MPV. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the vehicle has been primarily used for short journeys. Regular servicing and the use of high-quality diesel fuel are essential to ensure the long-term reliability of this powertrain.
