2005 BMW 545 vs. 2003 Opel Astra
To start off, 2005 BMW 545 is newer by 2 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 4,390 cc (8 cylinders), 2005 BMW 545 is equipped with a bigger engine. In terms of performance, 2005 BMW 545 (326 HP @ 6100 RPM) has 152 more horse power than 2003 Opel Astra. (174 HP @ 5200 RPM). In normal driving conditions, 2005 BMW 545 should accelerate faster than 2003 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 545 weights approximately 255 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 2005 BMW 545 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 2005 BMW 545. 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, 2005 BMW 545 (450 Nm @ 3600 RPM) has 199 more torque (in Nm) than 2003 Opel Astra. (251 Nm @ 1950 RPM). This means 2005 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra.
Compare all specifications:
| 2005 BMW 545 | 2003 Opel Astra | |
| Make | BMW | Opel |
| Model | 545 | Astra |
| Year Released | 2005 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4390 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 326 HP | 174 HP |
| Engine RPM | 6100 RPM | 5200 RPM |
| Torque | 450 Nm | 251 Nm |
| Torque RPM | 3600 RPM | 1950 RPM |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 82.7 mm | 86 mm |
| Top Speed | 250 km/hour | 217 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 8.9 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1665 kg | 1410 kg |
| Vehicle Length | 4850 mm | 4260 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2740 mm |
| Fuel Consumption Overall | 11.3 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
