The Mercedes-Benz B 150, produced between October 2005 and April 2008, was the entry-level variant of the W245 B-Class, a compact multi-purpose vehicle (MPV) designed to bridge the gap between traditional hatchbacks and larger people carriers. Positioned as an affordable and practical option, the B 150 aimed to attract buyers seeking a spacious and comfortable vehicle for everyday use. It was a key component of Mercedes-Benz’s strategy to expand its presence in the growing compact vehicle segment, particularly in Europe. The W245 B-Class, and consequently the B 150, was built on the A-Class (W169) platform, sharing many of its mechanical components.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | B-class |
| Generation | B-class (W245) |
| Type (Engine) | B 150 (95 Hp) |
| Start of production | October, 2005 |
| End of production | April, 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | MPV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.3-8.5 l/100 km (28.3 – 27.7 US mpg, 34 – 33.2 UK mpg, 12 – 11.8 km/l) |
| Fuel consumption (extra urban) | 5.6-5.8 l/100 km (42 – 40.6 US mpg, 50.4 – 48.7 UK mpg, 17.9 – 17.2 km/l) |
| Fuel consumption (combined) | 6.6-6.8 l/100 km (35.6 – 34.6 US mpg, 42.8 – 41.5 UK mpg, 15.2 – 14.7 km/l) |
| CO2 emissions | 158-163 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 13.2 sec |
| Acceleration 0 – 62 mph | 13.2 sec |
| Acceleration 0 – 60 mph | 12.5 sec |
| Maximum speed | 174 km/h (108.12 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 12.9 kg/Hp, 77.6 Hp/tonne |
| Weight-to-torque ratio | 8.8 kg/Nm, 114.3 Nm/tonne |
| Power | 95 Hp @ 5200 rpm |
| Power per litre | 63.4 Hp/l |
| Torque | 140 Nm @ 3500-4000 rpm (103.26 lb.-ft. @ 3500-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | M 266.920 |
| Engine displacement | 1498 cm3 (91.41 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 69.2 mm (2.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant capacity | 6.3 l (6.66 US qt | 5.54 UK qt) |
| Kerb Weight | 1225 kg (2700.66 lbs.) |
| Max. weight | 1835 kg (4045.48 lbs.) |
| Max load | 610 kg (1344.82 lbs.) |
| Trunk (boot) space – minimum | 544 l (19.21 cu. ft.) |
| Trunk (boot) space – maximum | 2245 l (79.28 cu. ft.) |
| Fuel tank capacity | 54 l (14.27 US gal | 11.88 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1000 kg (2204.62 lbs.) |
| Permitted trailer load without brakes | 645 kg (1421.98 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4270 mm (168.11 in.) |
| Width | 1777 mm (69.96 in.) |
| Width including mirrors | 1975 mm (77.76 in.) |
| Height | 1603 mm (63.11 in.) |
| Wheelbase | 2778 mm (109.37 in.) |
| Front track | 1556 mm (61.26 in.) |
| Rear track | 1551 mm (61.06 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle | 11.95 m (39.21 ft.) |
| Drivetrain Architecture | ICE, Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs, 276×12 mm |
| Rear brakes | Disc, 258×8 mm |
| 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 | 6J x 15 |
Powertrain & Engine Architecture
The B 150 was powered by the Mercedes-Benz M 266.920 engine, a 1.5-liter inline-four cylinder gasoline engine. This engine, part of the M 266 family, featured a single overhead camshaft (SOHC) valvetrain with two valves per cylinder. It utilized a multi-port fuel injection system, delivering fuel directly into the intake manifold. The engine produced 95 horsepower (HP) at 5200 rpm and 140 Newton-meters (103.26 lb.-ft.) of torque between 3500 and 4000 rpm. The engine’s relatively modest output was typical for entry-level European compacts of the time, prioritizing fuel efficiency over outright performance. The engine was transversely mounted in the front of the vehicle, driving the front wheels. The standard transmission was a five-speed manual gearbox, although an automatic transmission was also available as an option.
Driving Characteristics
The B 150, with its 95 hp and front-wheel drive configuration, offered a comfortable but unhurried driving experience. Acceleration from 0 to 60 mph took approximately 12.5 seconds, and the top speed was limited to 174 km/h (108.12 mph). Compared to higher-spec B-Class models like the B 200, which offered significantly more power, the B 150 felt noticeably slower, particularly when fully loaded or tackling inclines. The five-speed manual transmission was well-matched to the engine’s characteristics, providing adequate gear spacing for everyday driving. The automatic transmission, while offering convenience, could sometimes feel sluggish and hesitant, especially during overtaking maneuvers. The B 150’s suspension was tuned for comfort, providing a relatively smooth ride over most road surfaces. However, the handling was not particularly sporty, with noticeable body roll in corners.
Equipment & Trim Levels
The B 150 typically came equipped with a reasonable level of standard features, including air conditioning, power windows, central locking, and an audio system. Interior upholstery was typically cloth, with a functional and durable design. Optional extras included alloy wheels, a sunroof, upgraded audio systems, and parking sensors. The dashboard layout was typical of Mercedes-Benz vehicles of the era, with a clear and intuitive design. Safety features included ABS (Anti-lock Braking System) and airbags. The B 150 was generally considered to be well-equipped for its price point, offering a good balance of comfort, convenience, and safety.
Chassis & Braking
The W245 B-Class, including the B 150, utilized an independent McPherson strut suspension at the front and a semi-independent torsion beam suspension at the rear. The front suspension incorporated a transverse stabilizer bar to reduce body roll. The braking system consisted of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) was standard, providing enhanced braking performance and stability. The B 150’s suspension and braking systems were designed to provide a comfortable and safe driving experience, prioritizing stability and control over outright performance.
Market Reception & Comparison
The B 150 was generally well-received by critics as an affordable and practical MPV. However, its relatively low power output was often cited as a drawback, particularly when compared to more powerful B-Class variants. Fuel economy was a strong point, with the B 150 achieving combined fuel consumption figures of 6.6-6.8 liters per 100 kilometers (35.6 – 34.6 US mpg). Compared to the B 200, the B 150 offered a more economical option, but at the expense of performance. The B 150 also competed with other compact MPVs from brands like Renault, Citroën, and Opel (Vauxhall), offering a more premium image and build quality.
Legacy
The Mercedes-Benz B 150, while not the most powerful or exciting variant of the W245 B-Class, remains a popular choice in the used car market due to its affordability, practicality, and relatively good fuel economy. The M 266.920 engine, while not known for its exceptional reliability, is generally considered to be durable and relatively easy to maintain. Common issues include occasional oil leaks and wear on the timing chain. Overall, the B 150 represents a sensible and well-rounded option for buyers seeking a compact MPV with a premium badge.
