2012 Porsche 911 vs. 2007 BMW 645
To start off, 2012 Porsche 911 is newer by 5 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2012 Porsche 911 (400 HP @ 7400 RPM) has 72 more horse power than 2007 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 2012 Porsche 911 should accelerate faster than 2007 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 295 kg more than 2012 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 10 more torque (in Nm) than 2012 Porsche 911. (440 Nm @ 5600 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2012 Porsche 911. 2007 BMW 645 has automatic transmission and 2012 Porsche 911 has manual transmission. 2012 Porsche 911 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2012 Porsche 911 | 2007 BMW 645 | |
| Make | Porsche | BMW |
| Model | 911 | 645 |
| Year Released | 2012 | 2007 |
| Body Type | Coupe | Coupe |
| Engine Position | Rear | Front |
| Engine Size | 3800 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | boxer | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 400 HP | 328 HP |
| Engine RPM | 7400 RPM | 6100 RPM |
| Torque | 440 Nm | 450 Nm |
| Torque RPM | 5600 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | 7-speed manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1395 kg | 1690 kg |
| Vehicle Length | 4491 mm | 4830 mm |
| Vehicle Width | 1808 mm | 1860 mm |
| Vehicle Height | 1295 mm | 1380 mm |
| Wheelbase Size | 2451 mm | 2790 mm |
| Fuel Tank Capacity | 64 L | 70 L |
