2009 Audi A3 vs. 2007 Mercedes-Benz B
To start off, 2009 Audi A3 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Mercedes-Benz B. In addition, the cost of maintenance, including insurance, on 2007 Mercedes-Benz B would be higher. At 1,896 cc (4 cylinders), 2009 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A3 (104 HP @ 4000 RPM) has 10 more horse power than 2007 Mercedes-Benz B. (94 HP @ 5200 RPM). In normal driving conditions, 2009 Audi A3 should accelerate faster than 2007 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A3 weights approximately 110 kg more than 2007 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, 2009 Audi A3 (250 Nm @ 1900 RPM) has 110 more torque (in Nm) than 2007 Mercedes-Benz B. (140 Nm @ 3500 RPM). This means 2009 Audi A3 will have an easier job in driving up hills or pulling heavy equipment than 2007 Mercedes-Benz B.
Compare all specifications:
| 2009 Audi A3 | 2007 Mercedes-Benz B | |
| Make | Audi | Mercedes-Benz |
| Model | A3 | B |
| Year Released | 2009 | 2007 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 1498 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 104 HP | 94 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 250 Nm | 140 Nm |
| Torque RPM | 1900 RPM | 3500 RPM |
| Engine Compression Ratio | 19.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 182 km/hour | 174 km/hour |
| Acceleration 0-100mph | 11.7 seconds | 13.2 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 | 1410 kg | 1300 kg |
| Vehicle Length | 4290 mm | 4280 mm |
| Vehicle Width | 1770 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1610 mm |
| Wheelbase Size | 2580 mm | 2780 mm |
| Fuel Consumption Overall | 5.1 L/100km | 6.6 L/100km |
| Fuel Tank Capacity | 55 L | 54 L |
