2004 BMW 645 vs. 2004 Proton 400
To start off, both 2004 BMW 645 and 2004 Proton 400 were released in the same year (2004). Therefore the support and the availability on parts for both vehicles should be relatively similar. 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 254 more horse power than 2004 Proton 400. (74 HP @ 6000 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 2004 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 720 kg more than 2004 Proton 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2004 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2004 Proton 400, being front wheel drive (FWD), will offer much better control with better grip. 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 @ 3600 RPM) has 342 more torque (in Nm) than 2004 Proton 400. (108 Nm @ 3000 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2004 Proton 400.
Compare all specifications:
| 2004 BMW 645 | 2004 Proton 400 | |
| Make | BMW | Proton |
| Model | 645 | 400 |
| Year Released | 2004 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1299 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 328 HP | 74 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 108 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1690 kg | 970 kg |
| Vehicle Length | 4830 mm | 4370 mm |
| Vehicle Width | 1860 mm | 1700 mm |
| Vehicle Height | 1380 mm | 1390 mm |
| Wheelbase Size | 2830 mm | 2510 mm |
