2006 BMW Z4 vs. 2004 Opel Astra
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Opel Astra. In addition, the cost of maintenance, including insurance, on 2004 Opel Astra would be higher. At 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (343 HP @ 7900 RPM) has 218 more horse power than 2004 Opel Astra. (125 HP @ 5600 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2004 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 7 kg more than 2004 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 2006 BMW Z4 (495 Nm @ 4900 RPM) has 328 more torque (in Nm) than 2004 Opel Astra. (167 Nm @ 3800 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Astra.
Compare all specifications:
| 2006 BMW Z4 | 2004 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2006 | 2004 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 343 HP | 125 HP |
| Engine RPM | 7900 RPM | 5600 RPM |
| Torque | 495 Nm | 167 Nm |
| Torque RPM | 4900 RPM | 3800 RPM |
| Engine Compression Ratio | 11.5:1 | 10.5:1 |
| Top Speed | 249 km/hour | 198 km/hour |
| Acceleration 0-100mph | 5 seconds | 10.9 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 | 1332 kg | 1325 kg |
| Vehicle Length | 4100 mm | 4520 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1300 mm | 1510 mm |
| Wheelbase Size | 2500 mm | 2700 mm |
| Fuel Consumption Overall | 11.4 L/100km | 8 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
