2009 Audi A4 vs. 2007 BMW X3
To start off, 2009 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW X3. In addition, the cost of maintenance, including insurance, on 2007 BMW X3 would be higher. At 2,979 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (260 HP @ 6600 RPM) has 102 more horse power than 2009 Audi A4. (158 HP @ 4500 RPM) In normal driving conditions, 2007 BMW X3 should accelerate faster than 2009 Audi A4.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2007 BMW X3 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 BMW X3 (305 Nm @ 2750 RPM) has 55 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2007 BMW X3 | |
| Make | Audi | BMW |
| Model | A4 | X3 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 2979 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 260 HP |
| Engine RPM | 4500 RPM | 6600 RPM |
| Torque | 250 Nm | 305 Nm |
| Torque RPM | 1500 RPM | 2750 RPM |
| Engine Bore Size | 82.5 mm | 85.1 mm |
| Engine Stroke Size | 84.1 mm | 87.9 mm |
| Engine Compression Ratio | 9.6:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 225 km/hour | 209 km/hour |
| Drive Type | Front | 4WD |
| Number of Doors | 4 doors | 5 doors |
