2012 BMW 520 vs. 2012 BMW 640
To start off, both 2012 BMW 520 and 2012 BMW 640 were released in the same year (2012). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,979 cc (6 cylinders), 2012 BMW 640 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (318 HP @ 5800 RPM) has 136 more horse power than 2012 BMW 520. (182 HP @ 5000 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 2012 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 155 kg more than 2012 BMW 520. 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, 2012 BMW 640 (450 Nm @ 1300 RPM) has 180 more torque (in Nm) than 2012 BMW 520. (270 Nm @ 4500 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2012 BMW 520.
Compare all specifications:
| 2012 BMW 520 | 2012 BMW 640 | |
| Make | BMW | BMW |
| Model | 520 | 640 |
| Year Released | 2012 | 2012 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 2979 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 182 HP | 318 HP |
| Engine RPM | 5000 RPM | 5800 RPM |
| Torque | 270 Nm | 450 Nm |
| Torque RPM | 4500 RPM | 1300 RPM |
| Engine Bore Size | 90.1 mm | 89.6 mm |
| Engine Stroke Size | 84 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 227 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 5.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1825 kg |
| Vehicle Length | 4899 mm | 5007 mm |
| Vehicle Width | 1860 mm | 1894 mm |
| Vehicle Height | 1464 mm | 1392 mm |
| Wheelbase Size | 2968 mm | 2968 mm |
| Fuel Consumption | 5.5 L/100km | 6.1 L/100km |
| Fuel Consumption City | 8.9 L/100km | 10.6 L/100km |
| Fuel Consumption Overall | 6.8 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
