2009 BMW X3 vs. 2010 Mercedes-Benz B
To start off, 2010 Mercedes-Benz B is newer by 1 year(s). Which means there will be less support and parts availability for 2009 BMW X3. In addition, the cost of maintenance, including insurance, on 2009 BMW X3 would be higher. At 2,979 cc (6 cylinders), 2009 BMW X3 is equipped with a bigger engine. In terms of performance, 2009 BMW X3 (228 HP @ 5900 RPM) has 94 more horse power than 2010 Mercedes-Benz B. (134 HP @ 5750 RPM). In normal driving conditions, 2009 BMW X3 should accelerate faster than 2010 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X3 weights approximately 491 kg more than 2010 Mercedes-Benz B. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2010 Mercedes-Benz B. In wet, icy, snow, or gravel driving conditions, 2009 BMW X3 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 BMW X3 (300 Nm @ 3500 RPM) has 115 more torque (in Nm) than 2010 Mercedes-Benz B. (185 Nm @ 3500 RPM). This means 2009 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2010 Mercedes-Benz B.
Compare all specifications:
| 2009 BMW X3 | 2010 Mercedes-Benz B | |
| Make | BMW | Mercedes-Benz |
| Model | X3 | B |
| Year Released | 2009 | 2010 |
| Body Type | SUV | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2034 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 228 HP | 134 HP |
| Engine RPM | 5900 RPM | 5750 RPM |
| Torque | 300 Nm | 185 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 210 km/hour | 191 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 10.1 seconds |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1836 kg | 1345 kg |
| Vehicle Length | 4570 mm | 4280 mm |
| Vehicle Width | 1860 mm | 1780 mm |
| Vehicle Height | 1680 mm | 1610 mm |
| Wheelbase Size | 2800 mm | 2780 mm |
| Fuel Consumption Overall | 11.4 L/100km | 7.2 L/100km |
| Fuel Tank Capacity | 67 L | 54 L |
