2007 BMW Z4 vs. 2007 Opel Astra
To start off, both 2007 BMW Z4 and 2007 Opel Astra were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,171 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (168 HP @ 6250 RPM) has 64 more horse power than 2007 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 60 kg more than 2007 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 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 2007 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW Z4 (210 Nm @ 3500 RPM) has 60 more torque (in Nm) than 2007 Opel Astra. (150 Nm @ 3900 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2007 BMW Z4 | 2007 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2007 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 168 HP | 104 HP |
| Engine RPM | 6250 RPM | 6000 RPM |
| Torque | 210 Nm | 150 Nm |
| Torque RPM | 3500 RPM | 3900 RPM |
| Engine Bore Size | 80 mm | 79 mm |
| Engine Stroke Size | 72 mm | 81.5 mm |
| Engine Compression Ratio | 10.8:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 225 km/hour | 185 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 12.3 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 | 1265 kg |
| Vehicle Length | 4100 mm | 4260 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1310 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2620 mm |
| Fuel Consumption Overall | 8.9 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
