2005 BMW Z4 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 BMW Z4. In addition, the cost of maintenance, including insurance, on 2005 BMW Z4 would be higher. At 3,824 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (351 HP @ 6600 RPM) has 210 more horse power than 2005 BMW Z4. (141 HP @ 6200 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Porsche 911 weights approximately 100 kg more than 2005 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Porsche 911 (400 Nm @ 4600 RPM) has 200 more torque (in Nm) than 2005 BMW Z4. (200 Nm @ 3600 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW Z4.
Compare all specifications:
| 2005 BMW Z4 | 2009 Porsche 911 | |
| Make | BMW | Porsche |
| Model | Z4 | 911 |
| Year Released | 2005 | 2009 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 1995 cc | 3824 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 351 HP |
| Engine RPM | 6200 RPM | 6600 RPM |
| Torque | 200 Nm | 400 Nm |
| Torque RPM | 3600 RPM | 4600 RPM |
| Engine Bore Size | 84 mm | 96 mm |
| Engine Stroke Size | 90 mm | 82.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 220 km/hour | 288 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 4.9 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1425 kg |
| Vehicle Length | 4100 mm | 4430 mm |
| Vehicle Width | 1790 mm | 1310 mm |
| Vehicle Height | 1310 mm | 1860 mm |
| Wheelbase Size | 2500 mm | 2360 mm |
| Fuel Consumption Overall | 7.7 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 55 L | 67 L |
