Comparison Mercedes-Benz B-class (W246 facelift 2014) B 180 (122 Hp) BlueEFFICIENCY Edition & BMW 3 Series Touring (F31) 320d (163 Hp) EfficientDynamics Edition Steptronic
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| Brand: | Mercedes-Benz | BMW |
| Model: | B-class | 3 Series |
| Generation: | B-class (W246 facelift 2014) | 3 Series Touring (F31) |
| Engine / modification: | B 180 (122 Hp) BlueEFFICIENCY Edition | 320d (163 Hp) EfficientDynamics Edition Steptronic |
| Production start: | 2014 year | 2013 year |
| Production end: | 2018 year | 2015 year |
| Coupe type: | Hatchback | Combi |
| Num. of Doors: | 5 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 7.0 l/100 km | 5.1 l/100 km |
| Fuel consumption / economy - extra urban: | 4.2 l/100 km | 3.8 l/100 km |
| Fuel consumption / economy - combined: | 5.2 l/100 km | 4.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 50 l | 57 l |
| Emission standard: | Euro 6 | Euro 5 |
| CO2 emissions: | 122 g/km | 112 g/km |
| Power: | 122 hp | 163 hp |
| Max power in: | 5000 rpm. | 4000 rpm. |
| Maximum speed: | 190 km/h | 222 km/h |
| Acceleration from 0 to 100 km/h: | 9.3 sec | 8.2 sec |
| Torque: | 200 Nm @ 1250-4000 rpm. | 380 Nm @ 1750-2750 rpm. |
| Model Engine: | M 270.910 | N47D20 |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 1595 cm3 | 1995 cm3 |
| Engine oil capacity: | 5.8 l | 5.2 l |
| Coolant: | 7 l | 7.0 l |
| Fuel System: | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharging | Twin-power turbo |
| Position of cylinders: | Inline | Inline |
| Number of cylinders: | 4 | 4 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 10.3 | 16.5 |
| Piston Stroke: | 90 mm | |
| Cylinder Bore: | 84 mm | |
| Wheel Drive: | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4393 mm | 4624 mm |
| Width: | 1786 mm | 1811 mm |
| Height: | 1557 mm | 1416 mm |
| Wheelbase: | 2699 mm | 2810 mm |
| Front track: | 1552 mm | 1543 mm |
| Rear (Back) track: | 1549 mm | 1583 mm |
| Ride height(clearance): | 98 mm | 127 mm |
| Approach angle: | 14.2 ° | |
| Departure angle: | 19.9 ° | |
| Minimum volume of Luggage (trunk): | 488 l | 495 l |
| Maximum amount of Luggage (trunk): | 1547 l | 1500 l |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent, spring |
| Rear suspension: | Independent, spring | Multi-link independent |
| Max weight: | 1960 kg | 2060 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1395 kg | 1510 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11 m | 11.3 m |
| Permitted trailer load with brakes (12%): | 1600 kg | |
| Permitted trailer load without brakes: | 745 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 195/65 R15 | 205/60 R16 92W |
| Wheel rims size: | R15 | 7J x 16 |