2004 BMW 645 vs. 2000 Opel Astra
To start off, 2004 BMW 645 is newer by 4 year(s). Which means there will be less support and parts availability for 2000 Opel Astra. In addition, the cost of maintenance, including insurance, on 2000 Opel Astra would be higher. At 4,392 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (322 HP @ 7400 RPM) has 169 more horse power than 2000 Opel Astra. (153 HP @ 6000 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 2000 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 515 kg more than 2000 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 645 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 645. However, in wet, icy, snow, or gravel driving conditions, 2000 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 645 (447 Nm) has 244 more torque (in Nm) than 2000 Opel Astra. (203 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2000 Opel Astra.
Compare all specifications:
| 2004 BMW 645 | 2000 Opel Astra | |
| Make | BMW | Opel |
| Model | 645 | Astra |
| Year Released | 2004 | 2000 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 2170 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 153 HP |
| Engine RPM | 7400 RPM | 6000 RPM |
| Torque | 447 Nm | 203 Nm |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 83 mm | 94.6 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1715 kg | 1200 kg |
| Vehicle Length | 4840 mm | 4270 mm |
| Vehicle Width | 1860 mm | 1720 mm |
| Vehicle Height | 1380 mm | 1400 mm |
| Wheelbase Size | 2790 mm | 2610 mm |
| Fuel Tank Capacity | 70 L | 52 L |
