2005 BMW 525 vs. 2004 BMW 645
To start off, 2005 BMW 525 is newer by 1 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 107 more horse power than 2005 BMW 525. (215 HP @ 6500 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2005 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 29 kg more than 2005 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2005 BMW 525 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 197 more torque (in Nm) than 2005 BMW 525. (250 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 525.
Compare all specifications:
| 2005 BMW 525 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 525 | 645 |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 4392 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 322 HP |
| Engine RPM | 6500 RPM | 7400 RPM |
| Torque | 250 Nm | 447 Nm |
| Engine Bore Size | 82 mm | 92 mm |
| Engine Stroke Size | 78.8 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1686 kg | 1715 kg |
| Vehicle Length | 4850 mm | 4840 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1490 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2790 mm |
| Fuel Consumption | 7.7 L/100km | 9.4 L/100km |
| Fuel Consumption City | 14.8 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 10.3 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
