2007 BMW X3 vs. 2005 BMW 525
To start off, 2007 BMW X3 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 BMW 525. In addition, the cost of maintenance, including insurance, on 2005 BMW 525 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 35 more horse power than 2005 BMW 525. (225 HP @ 6500 RPM). In normal driving conditions, 2007 BMW X3 should accelerate faster than 2005 BMW 525.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2007 BMW X3 (305 Nm @ 2750 RPM) has 55 more torque (in Nm) than 2005 BMW 525. (250 Nm @ 2750 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 525. 2007 BMW X3 has automatic transmission and 2005 BMW 525 has manual transmission. 2005 BMW 525 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW X3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW X3 | 2005 BMW 525 | |
| Make | BMW | BMW |
| Model | X3 | 525 |
| Year Released | 2007 | 2005 |
| Body Type | SUV | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 260 HP | 225 HP |
| Engine RPM | 6600 RPM | 6500 RPM |
| Torque | 305 Nm | 250 Nm |
| Torque RPM | 2750 RPM | 2750 RPM |
| Engine Bore Size | 85.1 mm | 82 mm |
| Engine Stroke Size | 87.9 mm | 78.8 mm |
| Engine Compression Ratio | 10.7:1 | 11.0:1 |
| Top Speed | 209 km/hour | 232 km/hour |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Doors | 5 doors | 5 doors |
