2008 BMW X3 vs. 2005 BMW 630
To start off, 2008 BMW X3 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW 630. In addition, the cost of maintenance, including insurance, on 2005 BMW 630 would be higher. At 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 65 more horse power than 2008 BMW X3. (189 HP @ 6000 RPM) In normal driving conditions, 2005 BMW 630 should accelerate faster than 2008 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X3 weights approximately 1 kg more than 2005 BMW 630.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 2005 BMW 630 (300 Nm @ 2500 RPM) has 55 more torque (in Nm) than 2008 BMW X3. (245 Nm @ 3500 RPM). This means 2005 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW X3.
Compare all specifications:
| 2008 BMW X3 | 2005 BMW 630 | |
| Make | BMW | BMW |
| Model | X3 | 630 |
| Year Released | 2008 | 2005 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 254 HP |
| Engine RPM | 6000 RPM | 6600 RPM |
| Torque | 245 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 85 mm |
| Engine Stroke Size | 75 mm | 88 mm |
| Engine Compression Ratio | 10.5:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 196 km/hour | 250 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 6.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1765 kg | 1764 kg |
| Vehicle Length | 4870 mm | 4830 mm |
| Vehicle Height | 1470 mm | 1380 mm |
| Wheelbase Size | 2800 mm | 2670 mm |
| Fuel Consumption Overall | 14.2 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 67 L | 70 L |
