2005 BMW Z4 vs. 2005 Opel Astra
To start off, both 2005 BMW Z4 and 2005 Opel Astra were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 1,997 cc, 2005 Opel Astra is equipped with a bigger engine. In terms of performance, 2005 BMW Z4 (141 HP @ 6200 RPM) has 18 more horse power than 2005 Opel Astra. (123 HP @ 5800 RPM). In normal driving conditions, 2005 BMW Z4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 142 kg more than 2005 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2005 Opel Astra, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW Z4 (200 Nm @ 3600 RPM) has 20 more torque (in Nm) than 2005 Opel Astra. (180 Nm @ 4400 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2005 BMW Z4 | 2005 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2005 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1997 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 123 HP |
| Engine RPM | 6200 RPM | 5800 RPM |
| Torque | 200 Nm | 180 Nm |
| Torque RPM | 3600 RPM | 4400 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 90 mm | 86 mm |
| Engine Compression Ratio | 10.5:1 | 9.6:1 |
| Top Speed | 220 km/hour | 201 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 9.6 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1325 kg | 1183 kg |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Consumption Overall | 7.7 L/100km | 11.7 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
