2007 Audi A4 vs. 2009 Mercedes-Benz B
To start off, 2009 Mercedes-Benz B is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 2,967 cc (6 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (222 HP @ 4000 RPM) has 84 more horse power than 2009 Mercedes-Benz B. (138 HP @ 4200 RPM). In normal driving conditions, 2007 Audi A4 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 160 kg more than 2007 Audi A4.
Because 2007 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Mercedes-Benz B. In wet, icy, snow, or gravel driving conditions, 2007 Audi A4 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, 2007 Audi A4 (450 Nm @ 1400 RPM) has 150 more torque (in Nm) than 2009 Mercedes-Benz B. (300 Nm @ 1600 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercedes-Benz B.
Compare all specifications:
| 2007 Audi A4 | 2009 Mercedes-Benz B | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | B |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 1990 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 222 HP | 138 HP |
| Engine RPM | 4000 RPM | 4200 RPM |
| Torque | 450 Nm | 300 Nm |
| Torque RPM | 1400 RPM | 1600 RPM |
| Engine Bore Size | 83 mm | 83 mm |
| Engine Stroke Size | 91.4 mm | 92 mm |
| Engine Compression Ratio | 17.0:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 235 km/hour | 200 km/hour |
| Acceleration 0-100mph | 7.5 seconds | 9.6 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1275 kg | 1435 kg |
| Vehicle Length | 4590 mm | 4280 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1610 mm |
| Wheelbase Size | 2660 mm | 2780 mm |
| Fuel Consumption Overall | 7.6 L/100km | 5.6 L/100km |
| Fuel Tank Capacity | 70 L | 54 L |
