2005 BMW 645 vs. 2008 BMW 325
To start off, 2008 BMW 325 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW 645. In addition, the cost of maintenance, including insurance, on 2005 BMW 645 would be higher. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 111 more horse power than 2008 BMW 325. (215 HP @ 6500 RPM). In normal driving conditions, 2005 BMW 645 should accelerate faster than 2008 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 215 kg more than 2008 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW 325 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW 645. In wet, icy, snow, or gravel driving conditions, 2008 BMW 325 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, 2005 BMW 645 (447 Nm @ 3600 RPM) has 197 more torque (in Nm) than 2008 BMW 325. (250 Nm @ 2750 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 325.
Compare all specifications:
| 2005 BMW 645 | 2008 BMW 325 | |
| Make | BMW | BMW |
| Model | 645 | 325 |
| Year Released | 2005 | 2008 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 2497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 326 HP | 215 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 447 Nm | 250 Nm |
| Torque RPM | 3600 RPM | 2750 RPM |
| Engine Bore Size | 92 mm | 82 mm |
| Engine Stroke Size | 83 mm | 78.8 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 7.7 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1895 kg | 1680 kg |
| Vehicle Length | 4830 mm | 4530 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2890 mm | 2770 mm |
| Fuel Consumption Overall | 12.8 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
