2003 BMW 520 vs. 2007 BMW X5
To start off, 2007 BMW X5 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 2,979 cc (6 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (228 HP @ 5900 RPM) has 61 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM) In normal driving conditions, 2007 BMW X5 should accelerate faster than 2003 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 380 kg more than 2003 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 520. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW X5 (301 Nm @ 3500 RPM) has 91 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520. 2003 BMW 520 has automatic transmission and 2007 BMW X5 has manual transmission. 2007 BMW X5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 520 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 520 | 2007 BMW X5 | |
| Make | BMW | BMW |
| Model | 520 | X5 |
| Year Released | 2003 | 2007 |
| Body Type | Station Wagon | SUV |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 167 HP | 228 HP |
| Engine RPM | 6100 RPM | 5900 RPM |
| Torque | 210 Nm | 301 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 80 mm | 84 mm |
| Engine Stroke Size | 72 mm | 89.6 mm |
| Top Speed | 217 km/hour | 210 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 9.4 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1700 kg | 2080 kg |
| Vehicle Length | 4810 mm | 4670 mm |
| Vehicle Width | 1810 mm | 1710 mm |
| Vehicle Height | 1450 mm | 1880 mm |
| Wheelbase Size | 2730 mm | 2830 mm |
| Fuel Consumption Overall | 9.7 L/100km | 14.2 L/100km |
| Fuel Tank Capacity | 70 L | 85 L |
