2005 BMW 325 vs. 2004 BMW 645
To start off, 2005 BMW 325 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 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 147 more horse power than 2005 BMW 325. (181 HP @ 7400 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2005 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 240 kg more than 2005 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 (450 Nm) has 213 more torque (in Nm) than 2005 BMW 325. (237 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 325.
Compare all specifications:
| 2005 BMW 325 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 325 | 645 |
| Year Released | 2005 | 2004 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 181 HP | 328 HP |
| Engine RPM | 7400 RPM | 6100 RPM |
| Torque | 237 Nm | 450 Nm |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 75 mm | 82.7 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1450 kg | 1690 kg |
| Vehicle Length | 4490 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1380 mm | 1380 mm |
| Wheelbase Size | 2730 mm | 2830 mm |
| Fuel Consumption Overall | 10.4 L/100km | 12 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
