1981 BMW 745 vs. 2008 Opel Astra
To start off, 2008 Opel Astra is newer by 27 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 3,430 cc (6 cylinders), 1981 BMW 745 is equipped with a bigger engine. In terms of performance, 1981 BMW 745 (252 HP @ 5200 RPM) has 183 more horse power than 2008 Opel Astra. (69 HP @ 5600 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 2008 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 280 kg more than 2008 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1981 BMW 745 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 1981 BMW 745. However, in wet, icy, snow, or gravel driving conditions, 2008 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, 1981 BMW 745 (380 Nm @ 2200 RPM) has 210 more torque (in Nm) than 2008 Opel Astra. (170 Nm @ 3800 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Astra. 2008 Opel Astra has automatic transmission and 1981 BMW 745 has manual transmission. 1981 BMW 745 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 BMW 745 | 2008 Opel Astra | |
| Make | BMW | Opel |
| Model | 745 | Astra |
| Year Released | 1981 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 252 HP | 69 HP |
| Engine RPM | 5200 RPM | 5600 RPM |
| Torque | 380 Nm | 170 Nm |
| Torque RPM | 2200 RPM | 3800 RPM |
| Engine Bore Size | 92 mm | 80.5 mm |
| Engine Stroke Size | 86 mm | 88.2 mm |
| Engine Compression Ratio | 8.0:1 | 10.5:1 |
| Top Speed | 220 km/hour | 188 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1590 kg | 1310 kg |
| Vehicle Length | 4870 mm | 3510 mm |
| Vehicle Height | 1440 mm | 1700 mm |
| Wheelbase Size | 2800 mm | 2620 mm |
| Fuel Tank Capacity | 100 L | 52 L |
