2006 BMW Z4 vs. 2008 Porsche Cayman
To start off, 2008 Porsche Cayman is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 2,687 cc (6 cylinders), 2008 Porsche Cayman is equipped with a bigger engine. In terms of performance, 2008 Porsche Cayman (242 HP @ 6000 RPM) has 53 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2008 Porsche Cayman should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 35 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, 2008 Porsche Cayman (273 Nm @ 4200 RPM) has 28 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2008 Porsche Cayman will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2008 Porsche Cayman | |
| Make | BMW | Porsche |
| Model | Z4 | Cayman |
| Year Released | 2006 | 2008 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 2492 cc | 2687 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 242 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 245 Nm | 273 Nm |
| Torque RPM | 3500 RPM | 4200 RPM |
| Engine Compression Ratio | 11.0:1 | 11.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 235 km/hour | 253 km/hour |
| Acceleration 0-100mph | 7 seconds | 6.1 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1335 kg | 1300 kg |
| Vehicle Length | 4100 mm | 4350 mm |
| Vehicle Width | 1790 mm | 1810 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2500 mm | 2420 mm |
| Fuel Consumption Overall | 9 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
