2004 BMW 645 vs. 2008 BMW 325
To start off, 2008 BMW 325 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. 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 133 more horse power than 2008 BMW 325. (189 HP @ 6000 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 2008 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 140 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 2004 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, 2004 BMW 645 (447 Nm) has 202 more torque (in Nm) than 2008 BMW 325. (245 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 325.
Compare all specifications:
| 2004 BMW 645 | 2008 BMW 325 | |
| Make | BMW | BMW |
| Model | 645 | 325 |
| Year Released | 2004 | 2008 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 2494 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 189 HP |
| Engine RPM | 7400 RPM | 6000 RPM |
| Torque | 447 Nm | 245 Nm |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 83 mm | 75 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1715 kg | 1575 kg |
| Vehicle Length | 4840 mm | 4480 mm |
| Vehicle Width | 1860 mm | 1750 mm |
| Vehicle Height | 1380 mm | 1440 mm |
| Wheelbase Size | 2790 mm | 2730 mm |
| Fuel Consumption Overall | 11.8 L/100km | 10 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
