2006 BMW Z4 vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 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 106 more horse power than 2007 Opel Astra. (237 HP @ 5600 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Astra weights approximately 66 kg more than 2006 BMW Z4.
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, 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, 2006 BMW Z4 (495 Nm @ 4900 RPM) has 175 more torque (in Nm) than 2007 Opel Astra. (320 Nm @ 2400 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2006 BMW Z4 | 2007 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2006 | 2007 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 343 HP | 237 HP |
| Engine RPM | 7900 RPM | 5600 RPM |
| Torque | 495 Nm | 320 Nm |
| Torque RPM | 4900 RPM | 2400 RPM |
| Engine Compression Ratio | 11.5:1 | 8.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 249 km/hour | 244 km/hour |
| Acceleration 0-100mph | 5 seconds | 6.4 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1332 kg | 1398 kg |
| Vehicle Length | 4100 mm | 4300 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1300 mm | 1410 mm |
| Wheelbase Size | 2500 mm | 2620 mm |
| Fuel Consumption Overall | 11.4 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
