2006 BMW 645 vs. 2013 Porsche 911
To start off, 2013 Porsche 911 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, 2013 Porsche 911 (493 HP @ 6500 RPM) has 165 more horse power than 2006 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2013 Porsche 911 should accelerate faster than 2006 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 266 kg more than 2013 Porsche 911.
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, 2013 Porsche 911 (649 Nm @ 5000 RPM) has 199 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2013 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645.
Compare all specifications:
| 2006 BMW 645 | 2013 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 645 | 911 |
| Year Released | 2006 | 2013 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4398 cc | 3800 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 328 HP | 493 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 450 Nm | 649 Nm |
| Torque RPM | 3600 RPM | 5000 RPM |
| Engine Bore Size | 92 mm | 102 mm |
| Engine Stroke Size | 83 mm | 77 mm |
| Engine Compression Ratio | 10.0:1 | 9.8 : 1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 312 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 3.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1836 kg | 1570 kg |
| Vehicle Length | 4830 mm | 4450 mm |
| Vehicle Width | 1860 mm | 1852 mm |
| Vehicle Height | 1380 mm | 1300 mm |
| Wheelbase Size | 2790 mm | 2350 mm |
