2009 Audi A4 vs. 2011 Mercedes-Benz B
To start off, 2011 Mercedes-Benz B is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi A4. In addition, the cost of maintenance, including insurance, on 2009 Audi A4 would be higher. At 2,034 cc (4 cylinders), 2011 Mercedes-Benz B is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (158 HP @ 4500 RPM) has 24 more horse power than 2011 Mercedes-Benz B. (134 HP @ 5750 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2011 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2011 Mercedes-Benz B weights approximately 415 kg more than 2009 Audi A4.
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, 2009 Audi A4 (250 Nm @ 1500 RPM) has 65 more torque (in Nm) than 2011 Mercedes-Benz B. (185 Nm @ 3500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2011 Mercedes-Benz B. 2009 Audi A4 has automatic transmission and 2011 Mercedes-Benz B has manual transmission. 2011 Mercedes-Benz B will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2011 Mercedes-Benz B | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | B |
| Year Released | 2009 | 2011 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 2034 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 158 HP | 134 HP |
| Engine RPM | 4500 RPM | 5750 RPM |
| Torque | 250 Nm | 185 Nm |
| Torque RPM | 1500 RPM | 3500 RPM |
| Engine Compression Ratio | 9.6:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 218 km/hour | 191 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 10.1 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 930 kg | 1345 kg |
| Vehicle Length | 4710 mm | 4280 mm |
| Vehicle Width | 2010 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1610 mm |
| Wheelbase Size | 2810 mm | 2780 mm |
| Fuel Consumption Overall | 7.4 L/100km | 7.2 L/100km |
| Fuel Tank Capacity | 65 L | 54 L |
