2005 BMW 730 vs. 2008 Porsche Cayman
To start off, 2008 Porsche Cayman is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW 730. In addition, the cost of maintenance, including insurance, on 2005 BMW 730 would be higher. At 2,979 cc (6 cylinders), 2005 BMW 730 is equipped with a bigger engine. In terms of performance, 2008 Porsche Cayman (242 HP @ 6000 RPM) has 17 more horse power than 2005 BMW 730. (225 HP @ 4000 RPM) In normal driving conditions, 2008 Porsche Cayman should accelerate faster than 2005 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 675 kg more than 2008 Porsche Cayman.
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, 2005 BMW 730 (500 Nm @ 2000 RPM) has 227 more torque (in Nm) than 2008 Porsche Cayman. (273 Nm @ 4200 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2008 Porsche Cayman. 2005 BMW 730 has automatic transmission and 2008 Porsche Cayman has manual transmission. 2008 Porsche Cayman will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW 730 | 2008 Porsche Cayman | |
| Make | BMW | Porsche |
| Model | 730 | Cayman |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 2979 cc | 2687 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 242 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 500 Nm | 273 Nm |
| Torque RPM | 2000 RPM | 4200 RPM |
| Engine Compression Ratio | 18.0:1 | 11.3:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 8 seconds | 6.1 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1975 kg | 1300 kg |
| Vehicle Length | 5050 mm | 4350 mm |
| Vehicle Width | 1910 mm | 1810 mm |
| Vehicle Height | 1500 mm | 1310 mm |
| Wheelbase Size | 2890 mm | 2420 mm |
| Fuel Consumption Overall | 8.2 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 88 L | 64 L |
