2007 BMW 645 vs. 2001 Opel Astra
To start off, 2007 BMW 645 is newer by 6 year(s). Which means there will be less support and parts availability for 2001 Opel Astra. In addition, the cost of maintenance, including insurance, on 2001 Opel Astra would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 186 more horse power than 2001 Opel Astra. (142 HP @ 5600 RPM). In normal driving conditions, 2007 BMW 645 should accelerate faster than 2001 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 635 kg more than 2001 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 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 2007 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2001 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 247 more torque (in Nm) than 2001 Opel Astra. (203 Nm @ 4000 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Astra.
Compare all specifications:
| 2007 BMW 645 | 2001 Opel Astra | |
| Make | BMW | Opel |
| Model | 645 | Astra |
| Year Released | 2007 | 2001 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2198 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 142 HP |
| Engine RPM | 6100 RPM | 5600 RPM |
| Torque | 450 Nm | 203 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 82.7 mm | 94.6 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1180 kg |
| Vehicle Length | 4830 mm | 4260 mm |
| Vehicle Width | 1860 mm | 1720 mm |
| Vehicle Height | 1380 mm | 1430 mm |
| Wheelbase Size | 2790 mm | 2610 mm |
| Fuel Tank Capacity | 70 L | 52 L |
