2007 BMW Z4 vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW Z4. In addition, the cost of maintenance, including insurance, on 2007 BMW Z4 would be higher. At 2,494 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 Opel Astra (197 HP @ 5400 RPM) has 8 more horse power than 2007 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2009 Opel Astra should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Opel Astra weights approximately 126 kg more than 2007 BMW Z4. 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, 2009 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, 2009 Opel Astra (262 Nm @ 4200 RPM) has 17 more torque (in Nm) than 2007 BMW Z4. (245 Nm @ 3500 RPM). This means 2009 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 | 2009 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2007 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 197 HP |
| Engine RPM | 6000 RPM | 5400 RPM |
| Torque | 245 Nm | 262 Nm |
| Torque RPM | 3500 RPM | 4200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 7 seconds | 8.2 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1386 kg |
| Vehicle Length | 4100 mm | 4480 mm |
| Vehicle Width | 1790 mm | 2030 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2620 mm |
| Fuel Consumption Overall | 9.1 L/100km | 7.7 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
