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 1,991 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 50 more horse power than 2011 Mercedes-Benz B. (108 HP @ 4200 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. 2009 Audi A4 weights approximately 30 kg more than 2011 Mercedes-Benz B. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, both vehicles can yield 250 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2009 Audi A4 | 2011 Mercedes-Benz B | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | B |
| Year Released | 2009 | 2011 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1797 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 108 HP |
| Engine RPM | 4500 RPM | 4200 RPM |
| Torque | 250 Nm | 250 Nm |
| Torque RPM | 1500 RPM | 1600 RPM |
| Engine Bore Size | 82.5 mm | 83 mm |
| Engine Stroke Size | 84.1 mm | 92 mm |
| Engine Compression Ratio | 9.6:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 218 km/hour | 183 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 11.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1470 kg | 1440 kg |
| Vehicle Length | 4710 mm | 4280 mm |
| Vehicle Width | 1830 mm | 1780 mm |
| Vehicle Height | 1440 mm | 1610 mm |
| Wheelbase Size | 2810 mm | 2780 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.6 L/100km |
| Fuel Tank Capacity | 65 L | 54 L |
