2007 BMW Z4 vs. 2009 Porsche Cayenne
To start off, 2009 Porsche Cayenne is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW Z4. In addition, the cost of maintenance, including insurance, on 2007 BMW Z4 would be higher. At 4,806 cc (8 cylinders), 2009 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2009 Porsche Cayenne (399 HP @ 6500 RPM) has 61 more horse power than 2007 BMW Z4. (338 HP @ 7900 RPM) In normal driving conditions, 2009 Porsche Cayenne should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 135 kg more than 2009 Porsche Cayenne.
Because 2009 Porsche Cayenne is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Porsche Cayenne (500 Nm @ 3500 RPM) has 135 more torque (in Nm) than 2007 BMW Z4. (365 Nm @ 4900 RPM). This means 2009 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 2009 Porsche Cayenne | |
| Make | BMW | Porsche |
| Model | Z4 | Cayenne |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 4806 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 399 HP |
| Engine RPM | 7900 RPM | 6500 RPM |
| Torque | 365 Nm | 500 Nm |
| Torque RPM | 4900 RPM | 3500 RPM |
| Engine Bore Size | 87 mm | 96 mm |
| Engine Stroke Size | 91 mm | 83 mm |
| Engine Compression Ratio | 11.5:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 253 km/hour |
| Acceleration 0-100mph | 5 seconds | 6.1 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1485 kg | 1350 kg |
| Vehicle Length | 4120 mm | 4800 mm |
| Vehicle Width | 1790 mm | 1680 mm |
| Vehicle Height | 1310 mm | 1930 mm |
| Wheelbase Size | 2500 mm | 2860 mm |
| Fuel Consumption Overall | 12.1 L/100km | 15.1 L/100km |
| Fuel Tank Capacity | 55 L | 100 L |
