2007 BMW X5 vs. 2007 BMW 645
To start off, both 2007 BMW X5 and 2007 BMW 645 were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. Both 2007 BMW X5 and 2007 BMW 645 are equipped with a 4,398 cc engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 45 more horse power than 2007 BMW X5. (283 HP @ 3600 RPM) In normal driving conditions, 2007 BMW 645 should accelerate faster than 2007 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 490 kg more than 2007 BMW 645.
Because 2007 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 645. 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 645 (450 Nm @ 3600 RPM) has 10 more torque (in Nm) than 2007 BMW X5. (440 Nm @ 5400 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW X5.
Compare all specifications:
| 2007 BMW X5 | 2007 BMW 645 | |
| Make | BMW | BMW |
| Model | X5 | 645 |
| Year Released | 2007 | 2007 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 283 HP | 328 HP |
| Engine RPM | 3600 RPM | 6100 RPM |
| Torque | 440 Nm | 450 Nm |
| Torque RPM | 5400 RPM | 3600 RPM |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 206 km/hour | 245 km/hour |
| Acceleration 0-100mph | 8.1 seconds | 5.6 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2180 kg | 1690 kg |
| Vehicle Length | 4670 mm | 4830 mm |
| Vehicle Width | 1880 mm | 1860 mm |
| Vehicle Height | 1710 mm | 1380 mm |
| Wheelbase Size | 2830 mm | 2790 mm |
| Fuel Consumption Overall | 13.9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 93 L | 70 L |
