2007 BMW Z4 vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 4 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 2,492 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (189 HP @ 6000 RPM) has 66 more horse power than 2011 Opel Astra. (123 HP @ 4000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2011 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2011 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, 2011 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 Opel Astra (280 Nm @ 2000 RPM) has 35 more torque (in Nm) than 2007 BMW Z4. (245 Nm @ 3500 RPM). This means 2011 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2011 Opel Astra has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2011 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2007 | 2011 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 123 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 245 Nm | 280 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 75 mm | 90.4 mm |
| Engine Compression Ratio | 11.0:1 | 17.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 235 km/hour | 191 km/hour |
| Acceleration 0-100mph | 7 seconds | 10.5 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1335 kg | 1398 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 | 9 L/100km | 6 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
