The Mercedes-Benz B 180 (136 hp) Mild Hybrid 7G-DCT, introduced as part of the W247 facelift in October 2022, represents an entry-level offering within the updated B-Class range. Positioned as a fuel-efficient and technologically advanced compact hatchback, it caters to buyers seeking a comfortable and practical vehicle with a focus on modern features. This variant builds upon the foundation of the W247 platform, first introduced in 2019, incorporating mild hybrid technology to enhance fuel economy and reduce emissions. The B 180 serves as a gateway into the B-Class lineup, offering a balance between affordability and the premium experience expected from the Mercedes-Benz brand.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-class |
| Generation | B-class (W247, facelift 2022) |
| Type (Engine) | B 180 (136 Hp) Mild Hybrid 7G-DCT |
| Start of production | October, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 6.1-6.6 l/100 km (38.6 – 35.6 US mpg, 46.3 – 42.8 UK mpg, 16.4 – 15.2 km/l) |
| CO2 emissions (WLTP) | 136-151 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9 sec |
| Acceleration 0 – 62 mph | 9 sec |
| Acceleration 0 – 60 mph | 8.6 sec |
| Maximum speed | 212 km/h (131.73 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 10.4 kg/Hp, 96.1 Hp/tonne |
| Weight-to-torque ratio | 6.2 kg/Nm, 162.5 Nm/tonne |
| Battery voltage | 48 V |
| Electric motor power | 14 Hp |
| Electric motor Torque | 150 Nm (110.63 lb.-ft.) |
| Electric motor location | Front, Transverse |
| Power | 136 Hp @ 5500 rpm |
| Power per litre | 102.1 Hp/l |
| Torque | 230 Nm (169.64 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | M 282 |
| Engine displacement | 1332 cm3 (81.28 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Compression ratio | 11.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 1415 kg (3119.54 lbs.) |
| Max. weight | 2000 kg (4409.25 lbs.) |
| Max load | 585 kg (1289.7 lbs.) |
| Trunk (boot) space – minimum | 455 l (16.07 cu. ft.) |
| Trunk (boot) space – maximum | 1540 l (54.38 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 | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4419 mm (173.98 in.) |
| Width with mirrors folded | 1797 mm (70.75 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) | 0.253 |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive, MHEV |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 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 180 utilizes a 1.3-liter inline-four cylinder engine, internally designated as the M 282. This engine is part of Mercedes-Benz’s modular engine family, designed for efficiency and scalability. The engine produces 136 horsepower at 5500 rpm and 230 Nm (169.64 lb-ft) of torque. A key feature of this variant is its 48-volt mild hybrid system. This system incorporates a 14 hp electric motor that assists the internal combustion engine during acceleration and allows for extended coasting with the engine switched off, improving fuel economy. The electric motor is integrated into the drivetrain and works in conjunction with a belt starter-generator. Fuel is delivered via direct injection, and the engine is turbocharged with an intercooler to enhance performance. The transmission is a 7-speed dual-clutch transmission (7G-DCT), known for its quick and smooth gear changes. This transmission contributes to both performance and efficiency.
Driving Characteristics
The B 180, with its 136 hp and 7G-DCT transmission, offers a comfortable and refined driving experience. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 9 seconds. While not a performance-oriented variant, the mild hybrid system provides a noticeable boost during initial acceleration, making it feel more responsive in everyday driving situations. The 7G-DCT transmission shifts smoothly and efficiently, contributing to a relaxed cruising experience. Compared to higher-output B-Class models, such as the B 200 or B 250, the B 180 offers less outright power, but its fuel economy is superior. The gear ratios are tuned for efficiency rather than aggressive acceleration. The mild hybrid system also allows for a quieter and more refined driving experience, particularly in urban environments.
Equipment & Trim Levels
The B 180 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 features a modern design with digital displays. Optional extras available for the B 180 include a panoramic sunroof, upgraded sound system, and advanced driver-assistance systems like adaptive cruise control and blind-spot monitoring. Trim levels can vary by market, but generally offer packages that bundle popular options together.
Chassis & Braking
The W247 B-Class utilizes a MacPherson strut front suspension and a multi-link rear suspension, providing a comfortable ride and good handling characteristics. The B 180 is equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock braking system (ABS) is standard, along with electronic stability control. The suspension is tuned for comfort, prioritizing ride quality over sporty handling. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The steering is electrically assisted, providing a light and precise feel.
Market Reception & Comparison
The B 180 Mild Hybrid was generally well-received by automotive critics as a practical and efficient entry point into the B-Class range. Reviewers praised its fuel economy and comfortable ride. Compared to the more powerful B 200, the B 180 offered a lower price point and better fuel efficiency, making it an attractive option for budget-conscious buyers. However, some critics noted that its acceleration was not as brisk as higher-output models. In terms of reliability, the M 282 engine has proven to be generally reliable, although regular maintenance is essential. The 7G-DCT transmission is also known for its durability when properly maintained.
Legacy
The B 180 Mild Hybrid 7G-DCT represents a significant step towards electrification in the Mercedes-Benz B-Class lineup. Its introduction of mild hybrid technology helped to reduce emissions and improve fuel economy, aligning with increasingly stringent environmental regulations. On the used car market, these models are becoming increasingly popular due to their affordability and fuel efficiency. The combination of a reliable engine, smooth transmission, and practical hatchback body style makes the B 180 a compelling option for buyers seeking a comfortable and economical compact car. Long-term reliability appears to be good, provided that regular maintenance schedules are followed, particularly regarding oil changes and transmission servicing.
