2006 BMW 645 vs. 2006 Opel Astra
To start off, both 2006 BMW 645 and 2006 Opel Astra were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 160 more horse power than 2006 Opel Astra. (168 HP @ 5200 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 295 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 2006 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 2006 BMW 645. 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 200 more torque (in Nm) than 2006 Opel Astra. (250 Nm @ 1950 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra. 2006 BMW 645 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. 2006 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 2006 Opel Astra | |
| Make | BMW | Opel |
| Model | 645 | Astra |
| Year Released | 2006 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 168 HP |
| Engine RPM | 6100 RPM | 5200 RPM |
| Torque | 450 Nm | 250 Nm |
| Torque RPM | 3600 RPM | 1950 RPM |
| Engine Compression Ratio | 10.0:1 | 8.8:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 224 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 9.5 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1810 kg | 1515 kg |
| Vehicle Length | 4830 mm | 4480 mm |
| Vehicle Width | 1860 mm | 2030 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2790 mm | 2620 mm |
| Fuel Consumption Overall | 13.3 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
