2004 BMW 730 vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 730. In addition, the cost of maintenance, including insurance, on 2004 BMW 730 would be higher. At 2,979 cc (6 cylinders), 2004 BMW 730 is equipped with a bigger engine. In terms of performance, 2004 BMW 730 (225 HP @ 6000 RPM) has 136 more horse power than 2006 Opel Astra. (89 HP @ 5600 RPM). In normal driving conditions, 2004 BMW 730 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 730 weights approximately 510 kg more than 2006 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 730 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 730. However, in wet, icy, snow, or gravel driving conditions, 2006 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 730 (300 Nm @ 3500 RPM) has 175 more torque (in Nm) than 2006 Opel Astra. (125 Nm @ 4000 RPM). This means 2004 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra. 2004 BMW 730 has automatic transmission and 2006 Opel Astra has manual transmission. 2006 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 730 | 2006 Opel Astra | |
| Make | BMW | Opel |
| Model | 730 | Astra |
| Year Released | 2004 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 1364 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 89 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 300 Nm | 125 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 73.5 mm |
| Engine Stroke Size | 90 mm | 80.6 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1790 kg | 1280 kg |
| Vehicle Length | 5040 mm | 4520 mm |
| Vehicle Width | 1910 mm | 2000 mm |
| Vehicle Height | 1500 mm | 1510 mm |
| Wheelbase Size | 3000 mm | 2710 mm |
| Fuel Tank Capacity | 63 L | 52 L |
