2008 BMW Z4 vs. 2005 Porsche Cayenne
To start off, 2008 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Porsche Cayenne. In addition, the cost of maintenance, including insurance, on 2005 Porsche Cayenne would be higher. At 4,507 cc (8 cylinders), 2005 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2005 Porsche Cayenne (451 HP @ 6000 RPM) has 113 more horse power than 2008 BMW Z4. (338 HP @ 7900 RPM) In normal driving conditions, 2005 Porsche Cayenne should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche Cayenne weights approximately 945 kg more than 2008 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche Cayenne is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2005 Porsche Cayenne will offer significantly more control. 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 Porsche Cayenne (624 Nm @ 2250 RPM) has 259 more torque (in Nm) than 2008 BMW Z4. (365 Nm @ 4900 RPM). This means 2005 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4. 2005 Porsche Cayenne has automatic transmission and 2008 BMW Z4 has manual transmission. 2008 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Porsche Cayenne will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW Z4 | 2005 Porsche Cayenne | |
| Make | BMW | Porsche |
| Model | Z4 | Cayenne |
| Year Released | 2008 | 2005 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 3248 cc | 4507 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 451 HP |
| Engine RPM | 7900 RPM | 6000 RPM |
| Torque | 365 Nm | 624 Nm |
| Torque RPM | 4900 RPM | 2250 RPM |
| Engine Compression Ratio | 11.5:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 245 km/hour | 266 km/hour |
| Acceleration 0-100mph | 5 seconds | 5.6 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1485 kg | 2430 kg |
| Vehicle Length | 4120 mm | 4790 mm |
| Vehicle Width | 1790 mm | 1930 mm |
| Vehicle Height | 1310 mm | 1710 mm |
| Wheelbase Size | 2500 mm | 2860 mm |
| Fuel Consumption Overall | 12.1 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 55 L | 100 L |
