2009 Mercedes-Benz B vs. 2011 Mercedes-Benz A
To start off, 2011 Mercedes-Benz A is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Mercedes-Benz B. In addition, the cost of maintenance, including insurance, on 2009 Mercedes-Benz B would be higher. Both 2009 Mercedes-Benz B and 2011 Mercedes-Benz A are equipped with a 2,034 cc engine. In terms of performance, 2011 Mercedes-Benz A (190 HP @ 5000 RPM) has 76 more horse power than 2009 Mercedes-Benz B. (114 HP @ 5750 RPM) In normal driving conditions, 2011 Mercedes-Benz A should accelerate faster than 2009 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz B weights approximately 165 kg more than 2011 Mercedes-Benz A.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2011 Mercedes-Benz A (280 Nm @ 1800 RPM) has 115 more torque (in Nm) than 2009 Mercedes-Benz B. (165 Nm @ 3500 RPM). This means 2011 Mercedes-Benz A will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercedes-Benz B.
Compare all specifications:
| 2009 Mercedes-Benz B | 2011 Mercedes-Benz A | |
| Make | Mercedes-Benz | Mercedes-Benz |
| Model | B | A |
| Year Released | 2009 | 2011 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2034 cc | 2034 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 114 HP | 190 HP |
| Engine RPM | 5750 RPM | 5000 RPM |
| Torque | 165 Nm | 280 Nm |
| Torque RPM | 3500 RPM | 1800 RPM |
| Engine Bore Size | 83.1 mm | 83 mm |
| Engine Stroke Size | 94 mm | 94 mm |
| Engine Compression Ratio | 11.0:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 12.4 seconds | 7.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1470 kg | 1305 kg |
| Vehicle Length | 4280 mm | 3840 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1630 mm | 1600 mm |
| Wheelbase Size | 2780 mm | 2570 mm |
| Fuel Consumption Overall | 7.3 L/100km | 7.9 L/100km |
| Fuel Tank Capacity | 54 L | 54 L |
