2004 BMW Z4 vs. 2003 Opel Astra
To start off, 2004 BMW Z4 is newer by 1 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, 2004 BMW Z4 (168 HP @ 6250 RPM) has 23 more horse power than 2003 Opel Astra. (145 HP @ 5800 RPM). In normal driving conditions, 2004 BMW Z4 should accelerate faster than 2003 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW Z4 weights approximately 27 kg more than 2003 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 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 2004 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, 2004 BMW Z4 (210 Nm @ 3500 RPM) has 7 more torque (in Nm) than 2003 Opel Astra. (203 Nm @ 4000 RPM). This means 2004 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra. 2003 Opel Astra has automatic transmission and 2004 BMW Z4 has manual transmission. 2004 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:
| 2004 BMW Z4 | 2003 Opel Astra | |
| Make | BMW | Opel |
| Model | Z4 | Astra |
| Year Released | 2004 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2198 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 168 HP | 145 HP |
| Engine RPM | 6250 RPM | 5800 RPM |
| Torque | 210 Nm | 203 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 10.8:1 | 10.0:1 |
| Top Speed | 220 km/hour | 208 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 10 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1325 kg | 1298 kg |
| Vehicle Length | 4100 mm | 4120 mm |
| Vehicle Width | 1790 mm | 1720 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Consumption Overall | 8.9 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
