2008 BMW 645 vs. 2005 Porsche 911
To start off, 2008 BMW 645 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (377 HP @ 7400 RPM) has 49 more horse power than 2008 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2008 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 360 kg more than 2005 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, 2008 BMW 645 (450 Nm @ 3600 RPM) has 65 more torque (in Nm) than 2005 Porsche 911. (385 Nm @ 5000 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2008 BMW 645 | 2005 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 645 | 911 |
| Year Released | 2008 | 2005 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4398 cc | 3600 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 328 HP | 377 HP |
| Engine RPM | 6100 RPM | 7400 RPM |
| Torque | 450 Nm | 385 Nm |
| Torque RPM | 3600 RPM | 5000 RPM |
| Engine Bore Size | 92 mm | 100 mm |
| Engine Stroke Size | 82.7 mm | 76.4 mm |
| Engine Compression Ratio | 10.0:1 | 11.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 306 km/hour |
| Acceleration 0-100mph | 6.4 seconds | 4.5 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1815 kg | 1455 kg |
| Vehicle Length | 4830 mm | 4440 mm |
| Vehicle Width | 1860 mm | 1780 mm |
| Vehicle Height | 1380 mm | 1280 mm |
| Wheelbase Size | 2790 mm | 2360 mm |
| Fuel Consumption Overall | 12.8 L/100km | 13 L/100km |
| Fuel Tank Capacity | 70 L | 89 L |
