2004 BMW 645 vs. 2011 BMW X5
To start off, 2011 BMW X5 is newer by 7 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. At 4,392 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (322 HP @ 7400 RPM) has 22 more horse power than 2011 BMW X5. (300 HP @ 5800 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 2011 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X5 weights approximately 535 kg more than 2004 BMW 645.
Because 2011 BMW X5 is all wheel drive (AWD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2011 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, 2004 BMW 645 (447 Nm) has 41 more torque (in Nm) than 2011 BMW X5. (406 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2011 BMW X5.
Compare all specifications:
| 2004 BMW 645 | 2011 BMW X5 | |
| Make | BMW | BMW |
| Model | 645 | X5 |
| Year Released | 2004 | 2011 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 300 HP |
| Engine RPM | 7400 RPM | 5800 RPM |
| Torque | 447 Nm | 406 Nm |
| Drive Type | Rear | AWD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1715 kg | 2250 kg |
| Vehicle Length | 4840 mm | 4857 mm |
| Vehicle Width | 1860 mm | 1933 mm |
| Vehicle Height | 1380 mm | 1776 mm |
| Wheelbase Size | 2790 mm | 2934 mm |
| Fuel Consumption | 9.4 L/100km | 10.2 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 70 L | 85 L |
