2007 BMW Z4 vs. 2006 Opel Astra
To start off, 2007 BMW Z4 is newer by 1 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 2,497 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (215 HP @ 6500 RPM) has 17 more horse power than 2006 Opel Astra. (198 HP @ 5400 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Astra weights approximately 63 kg more than 2007 BMW Z4.
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, 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, 2006 Opel Astra (262 Nm @ 4200 RPM) has 12 more torque (in Nm) than 2007 BMW Z4. (250 Nm @ 2750 RPM). This means 2006 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 2006 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2007 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 198 HP |
| Engine RPM | 6500 RPM | 5400 RPM |
| Torque | 250 Nm | 262 Nm |
| Torque RPM | 2750 RPM | 4200 RPM |
| Engine Bore Size | 82 mm | 86 mm |
| Engine Stroke Size | 78.8 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 8.8:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 240 km/hour | 230 km/hour |
| Acceleration 0-100mph | 6.5 seconds | 8.4 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 | 1362 kg | 1425 kg |
| Vehicle Length | 4100 mm | 4520 mm |
| Vehicle Width | 1310 mm | 1800 mm |
| Vehicle Height | 1790 mm | 1510 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Consumption Overall | 8.4 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
