2006 BMW 645 vs. 2013 BMW 5 Series
To start off, 2013 BMW 5 Series is newer by 7 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 90 more horse power than 2013 BMW 5 Series. (238 HP @ 5000 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2013 BMW 5 Series. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 80 kg more than 2013 BMW 5 Series. 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 100 more torque (in Nm) than 2013 BMW 5 Series. (350 Nm @ 4800 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2013 BMW 5 Series.
Compare all specifications:
| 2006 BMW 645 | 2013 BMW 5 Series | |
| Make | BMW | BMW |
| Model | 645 | 5 Series |
| Year Released | 2006 | 2013 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1997 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 238 HP |
| Engine RPM | 6100 RPM | 5000 RPM |
| Torque | 450 Nm | 350 Nm |
| Torque RPM | 3600 RPM | 4800 RPM |
| Engine Compression Ratio | 10.0:1 | 10.0 :1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 6.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1810 kg | 1730 kg |
| Vehicle Length | 4830 mm | 4905 mm |
| Vehicle Width | 1860 mm | 2094 mm |
| Vehicle Height | 1380 mm | 1464 mm |
| Wheelbase Size | 2790 mm | 2968 mm |
| Fuel Tank Capacity | 70 L | 70 L |
