2011 BMW Z4 vs. 2007 Opel Astra
To start off, 2011 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2007 Opel Astra. In addition, the cost of maintenance, including insurance, on 2007 Opel Astra would be higher. At 3,000 cc (6 cylinders), 2011 BMW Z4 is equipped with a bigger engine. In terms of performance, 2011 BMW Z4 (335 HP @ 5900 RPM) has 230 more horse power than 2007 Opel Astra. (105 HP @ 6000 RPM). In normal driving conditions, 2011 BMW Z4 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW Z4 weights approximately 345 kg more than 2007 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, 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, 2011 BMW Z4 (450 Nm @ 1500 RPM) has 300 more torque (in Nm) than 2007 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 2007 Opel Astra. 2007 Opel Astra has automatic transmission and 2011 BMW Z4 has manual transmission. 2011 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2011 BMW Z4 | 2007 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2011 | 2007 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3000 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 335 HP | 105 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 450 Nm | 150 Nm |
| Torque RPM | 1500 RPM | 3900 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1610 kg | 1265 kg |
| Vehicle Length | 4242 mm | 4300 mm |
| Vehicle Width | 1791 mm | 1760 mm |
| Vehicle Height | 1285 mm | 1440 mm |
| Wheelbase Size | 2497 mm | 2620 mm |
| Fuel Consumption Highway | 9.8 L/100km | 5.4 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
