2004 BMW 730 vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 1 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 127 more horse power than 2005 Opel Astra. (98 HP @ 4400 RPM). In normal driving conditions, 2004 BMW 730 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 730 weights approximately 480 kg more than 2005 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, 2005 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 60 more torque (in Nm) than 2005 Opel Astra. (240 Nm @ 2300 RPM). This means 2004 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra. 2004 BMW 730 has automatic transmission and 2005 Opel Astra has manual transmission. 2005 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 | 2005 Opel Astra | |
| Make | BMW | Opel |
| Model | 730 | Astra |
| Year Released | 2004 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 1248 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 98 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 300 Nm | 240 Nm |
| Torque RPM | 3500 RPM | 2300 RPM |
| Engine Bore Size | 84 mm | 69.6 mm |
| Engine Stroke Size | 90 mm | 82 mm |
| Engine Compression Ratio | 10.2:1 | 18.4:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1790 kg | 1310 kg |
| Vehicle Length | 5040 mm | 4300 mm |
| Vehicle Width | 1910 mm | 1760 mm |
| Vehicle Height | 1500 mm | 1440 mm |
| Wheelbase Size | 3000 mm | 2520 mm |
| Fuel Tank Capacity | 63 L | 52 L |
