2003 BMW Z4 vs. 2005 Porsche Carrera GT
To start off, 2005 Porsche Carrera GT is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW Z4. In addition, the cost of maintenance, including insurance, on 2003 BMW Z4 would be higher. At 5,733 cc (10 cylinders), 2005 Porsche Carrera GT is equipped with a bigger engine. In terms of performance, 2005 Porsche Carrera GT (604 HP @ 8000 RPM) has 377 more horse power than 2003 BMW Z4. (227 HP @ 6000 RPM) In normal driving conditions, 2005 Porsche Carrera GT should accelerate faster than 2003 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche Carrera GT weights approximately 90 kg more than 2003 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 Porsche Carrera GT (590 Nm @ 5750 RPM) has 299 more torque (in Nm) than 2003 BMW Z4. (291 Nm @ 3500 RPM). This means 2005 Porsche Carrera GT will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW Z4.
Compare all specifications:
| 2003 BMW Z4 | 2005 Porsche Carrera GT | |
| Make | BMW | Porsche |
| Model | Z4 | Carrera GT |
| Year Released | 2003 | 2005 |
| Body Type | Convertible | Roadster |
| Engine Position | Front | Middle |
| Engine Size | 2999 cc | 5733 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 227 HP | 604 HP |
| Engine RPM | 6000 RPM | 8000 RPM |
| Torque | 291 Nm | 590 Nm |
| Torque RPM | 3500 RPM | 5750 RPM |
| Engine Bore Size | 84 mm | 98 mm |
| Engine Stroke Size | 90 mm | 76 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1290 kg | 1380 kg |
| Vehicle Length | 4100 mm | 4620 mm |
| Vehicle Width | 1790 mm | 1930 mm |
| Vehicle Height | 1310 mm | 1170 mm |
| Wheelbase Size | 2500 mm | 2860 mm |
| Fuel Tank Capacity | 55 L | 92 L |
