2005 BMW 318 vs. 2004 BMW 645
To start off, 2005 BMW 318 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 209 more horse power than 2005 BMW 318. (113 HP @ 5500 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2005 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 415 kg more than 2005 BMW 318. 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 (447 Nm) has 280 more torque (in Nm) than 2005 BMW 318. (167 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 318.
Compare all specifications:
| 2005 BMW 318 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 318 | 645 |
| Year Released | 2005 | 2004 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 4392 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 113 HP | 322 HP |
| Engine RPM | 5500 RPM | 7400 RPM |
| Torque | 167 Nm | 447 Nm |
| Engine Bore Size | 84.1 mm | 92 mm |
| Engine Stroke Size | 81 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1300 kg | 1715 kg |
| Vehicle Length | 4270 mm | 4840 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1410 mm | 1380 mm |
| Wheelbase Size | 2740 mm | 2790 mm |
| Fuel Tank Capacity | 67 L | 70 L |
