2005 Proton 400 vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 7 year(s). Which means there will be less support and parts availability for 2005 Proton 400. In addition, the cost of maintenance, including insurance, on 2005 Proton 400 would be higher. At 2,993 cc (6 cylinders), 2012 BMW 640 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (311 HP @ 4400 RPM) has 237 more horse power than 2005 Proton 400. (74 HP @ 6000 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 2005 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 893 kg more than 2005 Proton 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2012 BMW 640 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 2012 BMW 640. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2012 BMW 640 (630 Nm @ 1500 RPM) has 522 more torque (in Nm) than 2005 Proton 400. (108 Nm @ 3000 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2005 Proton 400. 2012 BMW 640 has automatic transmission and 2005 Proton 400 has manual transmission. 2005 Proton 400 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2012 BMW 640 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Proton 400 | 2012 BMW 640 | |
| Make | Proton | BMW |
| Model | 400 | 640 |
| Year Released | 2005 | 2012 |
| Engine Position | Front | Front |
| Engine Size | 1299 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 3 valves | 4 valves |
| Horse Power | 74 HP | 311 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 108 Nm | 630 Nm |
| Torque RPM | 3000 RPM | 1500 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Rear |
| Transmission Type | Manual | 8-speed shiftable automatic |
| Vehicle Weight | 972 kg | 1865 kg |
| Vehicle Length | 4370 mm | 5007 mm |
| Vehicle Width | 1700 mm | 1894 mm |
| Vehicle Height | 1390 mm | 1392 mm |
| Wheelbase Size | 2510 mm | 2968 mm |
