2005 BMW Z4 vs. 2005 Porsche 911
To start off, both 2005 BMW Z4 and 2005 Porsche 911 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,605 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (445 HP @ 6000 RPM) has 304 more horse power than 2005 BMW Z4. (141 HP @ 6200 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 265 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.
Let's talk about torque, 2005 Porsche 911 (620 Nm) has 420 more torque (in Nm) than 2005 BMW Z4. (200 Nm). This means 2005 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 | 2005 Porsche 911 | |
| Make | BMW | Porsche |
| Model | Z4 | 911 |
| Year Released | 2005 | 2005 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1995 cc | 3605 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 445 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 200 Nm | 620 Nm |
| Engine Bore Size | 84 mm | 100 mm |
| Engine Stroke Size | 90 mm | 76 mm |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1590 kg |
| Vehicle Length | 4100 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1840 mm |
| Vehicle Height | 1310 mm | 1300 mm |
| Wheelbase Size | 2500 mm | 2360 mm |
| Fuel Consumption | 5.8 L/100km | 10.7 L/100km |
| Fuel Consumption City | 11 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 7.7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 55 L | 63 L |
