2006 BMW Z4 vs. 2003 Opel Astra
To start off, 2006 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Opel Astra. In addition, the cost of maintenance, including insurance, on 2003 Opel Astra would be higher. At 2,198 cc (4 cylinders), 2003 Opel Astra is equipped with a bigger engine. In terms of performance, both vehicles can yield 148 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 28 kg more than 2003 Opel Astra.
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, 2003 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, 2003 Opel Astra (203 Nm @ 4000 RPM) has 3 more torque (in Nm) than 2006 BMW Z4. (200 Nm @ 3600 RPM). This means 2003 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 2003 Opel Astra has automatic transmission and 2006 BMW Z4 has manual transmission. 2006 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW Z4 | 2003 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2006 | 2003 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2198 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 148 HP |
| Engine RPM | 6200 RPM | 5800 RPM |
| Torque | 200 Nm | 203 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 90 mm | 94.6 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Top Speed | 220 km/hour | 208 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 10 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 | 1326 kg | 1298 kg |
| Vehicle Length | 4100 mm | 4260 mm |
| Vehicle Width | 1790 mm | 1720 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2500 mm | 2740 mm |
| Fuel Consumption | 5.6 L/100km | 6.7 L/100km |
| Fuel Consumption Overall | 7.5 L/100km | 8.6 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
