2006 BMW 645 vs. 2013 Porsche Cayman
To start off, 2013 Porsche Cayman 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 3 more horse power than 2013 Porsche Cayman. (325 HP @ 7400 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2013 Porsche Cayman. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 342 kg more than 2013 Porsche Cayman. 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 80 more torque (in Nm) than 2013 Porsche Cayman. (370 Nm @ 4750 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2013 Porsche Cayman.
Compare all specifications:
| 2006 BMW 645 | 2013 Porsche Cayman | |
| Make | BMW | Porsche |
| Model | 645 | Cayman |
| Year Released | 2006 | 2013 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4398 cc | 3400 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 325 HP |
| Engine RPM | 6100 RPM | 7400 RPM |
| Torque | 450 Nm | 370 Nm |
| Torque RPM | 3600 RPM | 4750 RPM |
| Engine Bore Size | 92 mm | 97 mm |
| Engine Stroke Size | 82.7 mm | 77 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 280 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 5.1 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 | 1692 kg | 1350 kg |
| Vehicle Length | 4830 mm | 4347 mm |
| Vehicle Width | 1860 mm | 1801 mm |
| Vehicle Height | 1380 mm | 1285 mm |
| Wheelbase Size | 2790 mm | 2415 mm |
