The Mercedes-Benz B-Class (W246 facelift, produced from 2014 to 2018) B 220 CDI, equipped with a 2.1-liter diesel engine producing 177 horsepower and a 7-speed dual-clutch transmission (DCT), represented a mid-range offering within the revised W246 lineup. Positioned above the B 180 CDI and B 200 CDI models, it aimed to provide a balance of performance, fuel efficiency, and practicality for buyers seeking a compact, premium hatchback. The facelift brought styling updates, improved interior materials, and enhanced technology compared to the pre-2014 models, solidifying the B-Class’s role as a versatile family vehicle in the European market.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-Class |
| Generation | B-Class (W246 facelift 2014) |
| Type (Engine) | B 220 CDI (177 Hp) DCT |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.0-4.9 l/100 km (47 – 48 US mpg, 56.5 – 57.6 UK mpg, 20 – 20.4 km/l) |
| Fuel consumption (extra urban) | 3.8-3.6 l/100 km (61.9 – 65.3 US mpg, 74.3 – 78.5 UK mpg, 26.3 – 27.8 km/l) |
| Fuel consumption (combined) | 4.3-4.1 l/100 km (54.7 – 57.4 US mpg, 65.7 – 68.9 UK mpg, 23.3 – 24.4 km/l) |
| CO2 emissions | 111-107 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 224 km/h (139.19 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.5 kg/Hp, 117.6 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 232.6 Nm/tonne |
| Power | 177 Hp @ 3600-3800 rpm |
| Power per litre | 82.6 Hp/l |
| Torque | 350 Nm @ 1400-3400 rpm (258.15 lb.-ft. @ 1400-3400 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | OM 651.930 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 16.2:1 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant capacity | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Kerb Weight | 1505 kg (3317.96 lbs.) |
| Max. weight | 2025 kg (4464.36 lbs.) |
| Max load | 520 kg (1146.4 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 | 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.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-DCT |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/55 R16 |
| Wheel rims size | 16 |
INTRODUCTION
The W246 Mercedes-Benz B-Class, launched in 2011 and facelifted in 2014, was designed as a compact multi-purpose vehicle (MPV) aimed at providing a more practical and spacious alternative to traditional hatchbacks. The B 220 CDI, introduced with the facelift, utilized the OM651.930 2.1-liter turbocharged diesel engine paired with a 7G-DCT dual-clutch transmission. This combination offered a significant step up in performance compared to the lower-powered diesel variants, while still maintaining respectable fuel economy. The B-Class competed with vehicles like the BMW 2 Series Active Tourer, Audi A3 Sportback, and Volkswagen Golf Sportsvan, appealing to families and individuals seeking a comfortable and versatile vehicle.
Powertrain & Engine Architecture
The heart of the B 220 CDI is the OM651.930, a 2.143-liter inline-four cylinder diesel engine. This engine is a common rail direct injection diesel, meaning fuel is injected directly into the combustion chamber at extremely high pressure. The common rail system allows for precise control over injection timing and quantity, optimizing combustion for both power and efficiency. The engine features a variable geometry turbocharger (VGT) and an intercooler to enhance performance. The VGT adjusts the turbine vanes to optimize boost pressure across the engine’s rev range. The 7G-DCT (7-speed dual-clutch transmission) is a key component, offering quick and smooth gear changes. It operates with two separate clutches, one for odd gears and one for even gears, allowing for pre-selection of the next gear and minimizing interruption in power delivery. This transmission contributed to the B 220 CDI’s relatively quick acceleration for a diesel-powered compact MPV.
Driving Characteristics
The B 220 CDI with the 7G-DCT provided a noticeably more responsive driving experience than the lower-powered B-Class variants. The 350 Nm (258 lb-ft) of torque, available from 1400-3400 rpm, provided strong pulling power for everyday driving and overtaking maneuvers. The DCT transmission shifted quickly and efficiently, contributing to a smooth and refined ride. While not a sports car, the B 220 CDI offered adequate acceleration, achieving 0-100 km/h (0-62 mph) in approximately 8.3 seconds. The gear ratios were tuned for a balance of performance and fuel economy, with taller gears for relaxed cruising on the highway. Compared to a manual transmission equipped B-Class, the DCT offered convenience and ease of use, particularly in urban traffic. However, some drivers might have preferred the more direct feel of a manual gearbox.
Equipment & Trim Levels
The B 220 CDI typically came well-equipped, reflecting its mid-range positioning within the B-Class lineup. Standard features often included automatic climate control, a multi-function steering wheel, a color infotainment display, and electric windows. Safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags were also standard. Optional extras included a panoramic sunroof, leather upholstery, navigation system, parking assist, and upgraded sound systems. Interior upholstery was typically a combination of fabric and Artico (Mercedes’ synthetic leather). The dashboard layout was modern and functional, with a focus on ergonomics and ease of use. Trim levels could vary depending on the market, but generally offered a range of customization options.
Chassis & Braking
The W246 B-Class featured a McPherson strut front suspension and an independent multi-link rear suspension. This setup provided a comfortable ride quality while maintaining good handling characteristics. The B 220 CDI, being a heavier variant, often benefited from slightly stiffer spring rates to manage the increased weight. Braking duties were handled by ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) were standard, enhancing safety and stability. The steering was a rack-and-pinion system with power assistance, providing precise and responsive steering feel.
Market Reception & Comparison
The B 220 CDI was generally well-received by automotive critics. It was praised for its refined engine, smooth transmission, and comfortable ride. The combination of performance and fuel economy was also a strong point. Compared to the B 180 CDI and B 200 CDI, the B 220 CDI offered a significant performance upgrade, making it a more enjoyable driving experience. However, it came at a higher price point. Compared to petrol-powered alternatives, the B 220 CDI offered superior fuel economy and torque, making it a practical choice for long-distance driving. Reliability reports generally indicated good dependability, although diesel particulate filter (DPF) issues could occur with infrequent long journeys.
Legacy
The B 220 CDI (W246 facelift) has proven to be a relatively reliable vehicle in the used car market. The OM651 engine is known for its durability, provided it has been properly maintained. Regular servicing, including oil changes and DPF regeneration, is crucial for long-term reliability. The 7G-DCT transmission is generally robust, but occasional issues with mechatronic units have been reported. Today, the B 220 CDI represents a good value proposition for buyers seeking a practical, fuel-efficient, and comfortable compact MPV. Its blend of performance, economy, and features continues to make it a competitive option in the used car market.
