2006 BMW X5 vs. 2008 BMW 525
To start off, 2008 BMW 525 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW X5. In addition, the cost of maintenance, including insurance, on 2006 BMW X5 would be higher. At 2,981 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (225 HP @ 5900 RPM) has 50 more horse power than 2008 BMW 525. (175 HP @ 4000 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 2008 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 85 kg more than 2008 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW 525. In wet, icy, snow, or gravel driving conditions, 2006 BMW X5 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, 2008 BMW 525 (400 Nm @ 2000 RPM) has 110 more torque (in Nm) than 2006 BMW X5. (290 Nm @ 3500 RPM). This means 2008 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2006 BMW X5 | 2008 BMW 525 | |
| Make | BMW | BMW |
| Model | X5 | 525 |
| Year Released | 2006 | 2008 |
| Body Type | SUV | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 2495 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 175 HP |
| Engine RPM | 5900 RPM | 4000 RPM |
| Torque | 290 Nm | 400 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 89.6 mm | 75.1 mm |
| Engine Compression Ratio | 10.2:1 | 17.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1835 kg | 1750 kg |
| Vehicle Length | 4670 mm | 4850 mm |
| Vehicle Width | 1880 mm | 1850 mm |
| Vehicle Height | 1770 mm | 1500 mm |
| Wheelbase Size | 2830 mm | 2840 mm |
| Fuel Consumption Overall | 13.8 L/100km | 7.1 L/100km |
| Fuel Tank Capacity | 92 L | 70 L |
