2003 BMW X Activity vs. 2006 BMW 650
To start off, 2006 BMW 650 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW X Activity. In addition, the cost of maintenance, including insurance, on 2003 BMW X Activity would be higher. At 4,800 cc (8 cylinders), 2006 BMW 650 is equipped with a bigger engine. In terms of performance, 2006 BMW 650 (360 HP @ 6300 RPM) has 132 more horse power than 2003 BMW X Activity. (228 HP @ 5900 RPM) In normal driving conditions, 2006 BMW 650 should accelerate faster than 2003 BMW X Activity. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 650 weights approximately 100 kg more than 2003 BMW X Activity. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW X Activity is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 650. In wet, icy, snow, or gravel driving conditions, 2003 BMW X Activity 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 650 (488 Nm @ 3400 RPM) has 188 more torque (in Nm) than 2003 BMW X Activity. (300 Nm @ 3500 RPM). This means 2006 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X Activity.
Compare all specifications:
| 2003 BMW X Activity | 2006 BMW 650 | |
| Make | BMW | BMW |
| Model | X Activity | 650 |
| Year Released | 2003 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 4800 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 228 HP | 360 HP |
| Engine RPM | 5900 RPM | 6300 RPM |
| Torque | 300 Nm | 488 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 89.6 mm | 88.3 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1630 kg | 1730 kg |
| Vehicle Length | 4560 mm | 4840 mm |
| Wheelbase Size | 2830 mm | 2790 mm |
| Fuel Tank Capacity | 63 L | 70 L |
