2004 Audi A4 vs. 2007 BMW X3
To start off, 2007 BMW X3 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Audi A4. In addition, the cost of maintenance, including insurance, on 2004 Audi A4 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 100 more horse power than 2004 Audi A4. (160 HP @ 4000 RPM) In normal driving conditions, 2007 BMW X3 should accelerate faster than 2004 Audi A4.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2004 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, 2004 Audi A4 (310 Nm @ 1400 RPM) has 5 more torque (in Nm) than 2007 BMW X3. (305 Nm @ 2750 RPM). This means 2004 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW X3.
Compare all specifications:
| 2004 Audi A4 | 2007 BMW X3 | |
| Make | Audi | BMW |
| Model | A4 | X3 |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 160 HP | 260 HP |
| Engine RPM | 4000 RPM | 6600 RPM |
| Torque | 310 Nm | 305 Nm |
| Torque RPM | 1400 RPM | 2750 RPM |
| Engine Bore Size | 78.4 mm | 85.1 mm |
| Engine Stroke Size | 86.4 mm | 87.9 mm |
| Engine Compression Ratio | 18.0:1 | 10.7:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | 4WD |
| Number of Doors | 4 doors | 5 doors |
