2006 Opel Astra vs. 2011 BMW Z4
To start off, 2011 BMW Z4 is newer by 5 year(s). Which means there will be less support and parts availability for 2006 Opel Astra. In addition, the cost of maintenance, including insurance, on 2006 Opel Astra would be higher. At 1,997 cc (4 cylinders), 2011 BMW Z4 is equipped with a bigger engine. In terms of performance, 2011 BMW Z4 (244 HP @ 5000 RPM) has 140 more horse power than 2006 Opel Astra. (104 HP @ 6000 RPM) In normal driving conditions, 2011 BMW Z4 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW Z4 weights approximately 175 kg more than 2006 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 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 2011 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2011 BMW Z4 (350 Nm @ 1500 RPM) has 200 more torque (in Nm) than 2006 Opel Astra. (150 Nm @ 3900 RPM). This means 2011 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2006 Opel Astra | 2011 BMW Z4 | |
| Make | Opel | BMW |
| Model | Astra | Z4 |
| Year Released | 2006 | 2011 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 1997 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 104 HP | 244 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 150 Nm | 350 Nm |
| Torque RPM | 3900 RPM | 1500 RPM |
| Engine Bore Size | 79 mm | 90.1 mm |
| Engine Stroke Size | 81.5 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 185 km/hour | 250 km/hour |
| Acceleration 0-100mph | 12.7 seconds | 5.7 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1315 kg | 1490 kg |
| Vehicle Length | 4520 mm | 4239 mm |
| Vehicle Width | 1800 mm | 1791 mm |
| Vehicle Height | 1510 mm | 1290 mm |
| Wheelbase Size | 2710 mm | 2497 mm |
| Fuel Consumption Overall | 6.7 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 52 L | 55 L |
