2008 BMW X5 vs. 2004 BMW 645
To start off, 2008 BMW X5 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. Both 2008 BMW X5 and 2004 BMW 645 are equipped with a 4,398 cc engine. In terms of performance, both vehicles can yield 328 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 501 kg more than 2004 BMW 645.
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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 10 more torque (in Nm) than 2008 BMW X5. (440 Nm @ 3700 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW X5. 2008 BMW X5 has automatic transmission and 2004 BMW 645 has manual transmission. 2004 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW X5 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | X5 | 645 |
| Year Released | 2008 | 2004 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4398 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 328 HP |
| Engine RPM | 6100 RPM | 6100 RPM |
| Torque | 440 Nm | 450 Nm |
| Torque RPM | 3700 RPM | 3600 RPM |
| Engine Bore Size | 92 mm | 92 mm |
| Engine Stroke Size | 82.7 mm | 82.7 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 229 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2191 kg | 1690 kg |
| Vehicle Length | 4870 mm | 4830 mm |
| Vehicle Height | 1480 mm | 1380 mm |
| Wheelbase Size | 2830 mm | 2830 mm |
| Fuel Consumption Overall | 15.4 L/100km | 12 L/100km |
| Fuel Tank Capacity | 85 L | 70 L |
