2005 Porsche 911 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 3,596 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (321 HP @ 4250 RPM) has 153 more horse power than 2006 BMW Z4. (168 HP @ 6250 RPM). In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 80 kg more than 2006 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 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 911 (370 Nm @ 4250 RPM) has 160 more torque (in Nm) than 2006 BMW Z4. (210 Nm @ 3500 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2005 Porsche 911 | 2006 BMW Z4 | |
| Make | Porsche | BMW |
| Model | 911 | Z4 |
| Year Released | 2005 | 2006 |
| Body Type | Coupe | Convertible |
| Engine Position | Rear | Front |
| Engine Size | 3596 cc | 2170 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 168 HP |
| Engine RPM | 4250 RPM | 6250 RPM |
| Torque | 370 Nm | 210 Nm |
| Torque RPM | 4250 RPM | 3500 RPM |
| Engine Bore Size | 96 mm | 80 mm |
| Engine Stroke Size | 82.8 mm | 72 mm |
| Engine Compression Ratio | 11.3:1 | 10.8:1 |
| Top Speed | 285 km/hour | 225 km/hour |
| Acceleration 0-100mph | 5.3 seconds | 7.7 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1405 kg | 1325 kg |
| Vehicle Length | 4440 mm | 4100 mm |
| Vehicle Width | 1780 mm | 1790 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2360 mm | 2500 mm |
| Fuel Consumption Overall | 11.2 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 64 L | 55 L |
