2006 BMW X5 vs. 1998 BMW 730
To start off, 2006 BMW X5 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 BMW 730. In addition, the cost of maintenance, including insurance, on 1998 BMW 730 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 35 more horse power than 1998 BMW 730. (190 HP @ 5300 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 1998 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 90 kg more than 1998 BMW 730. 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 1998 BMW 730. 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, 2006 BMW X5 (290 Nm @ 3500 RPM) has 10 more torque (in Nm) than 1998 BMW 730. (280 Nm @ 3950 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1998 BMW 730.
Compare all specifications:
| 2006 BMW X5 | 1998 BMW 730 | |
| Make | BMW | BMW |
| Model | X5 | 730 |
| Year Released | 2006 | 1998 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 2793 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 190 HP |
| Engine RPM | 5900 RPM | 5300 RPM |
| Torque | 290 Nm | 280 Nm |
| Torque RPM | 3500 RPM | 3950 RPM |
| Engine Bore Size | 84 mm | 84.1 mm |
| Engine Stroke Size | 89.6 mm | 84 mm |
| Engine Compression Ratio | 10.2:1 | 10.2:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1835 kg | 1745 kg |
| Vehicle Length | 4670 mm | 5130 mm |
| Vehicle Width | 1880 mm | 1870 mm |
| Vehicle Height | 1770 mm | 1430 mm |
| Wheelbase Size | 2830 mm | 2940 mm |
| Fuel Tank Capacity | 92 L | 90 L |
