2009 BMW Z4 vs. 2006 Porsche 911
To start off, 2009 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Porsche 911. In addition, the cost of maintenance, including insurance, on 2006 Porsche 911 would be higher. At 3,818 cc (6 cylinders), 2006 Porsche 911 is equipped with a bigger engine. In terms of performance, 2006 Porsche 911 (355 HP @ 6600 RPM) has 17 more horse power than 2009 BMW Z4. (338 HP @ 7900 RPM) In normal driving conditions, 2006 Porsche 911 should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 30 kg more than 2006 Porsche 911.
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 Porsche 911 (400 Nm @ 4600 RPM) has 35 more torque (in Nm) than 2009 BMW Z4. (365 Nm @ 4900 RPM). This means 2006 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
Compare all specifications:
| 2009 BMW Z4 | 2006 Porsche 911 | |
| Make | BMW | Porsche |
| Model | Z4 | 911 |
| Year Released | 2009 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3246 cc | 3818 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 355 HP |
| Engine RPM | 7900 RPM | 6600 RPM |
| Torque | 365 Nm | 400 Nm |
| Torque RPM | 4900 RPM | 4600 RPM |
| Engine Compression Ratio | 11.5:1 | 9.4:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1455 kg |
| Vehicle Length | 4120 mm | 4470 mm |
| Vehicle Width | 1310 mm | 1860 mm |
| Vehicle Height | 1790 mm | 1310 mm |
| Wheelbase Size | 2500 mm | 2360 mm |
| Fuel Consumption Overall | 12.3 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 67 L |
