1981 BMW 745 vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 30 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 55 more horse power than 2011 Opel Astra. (197 HP @ 5400 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 2011 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2011 Opel Astra weights approximately 29 kg more than 1981 BMW 745.
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, 2011 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 118 more torque (in Nm) than 2011 Opel Astra. (262 Nm @ 1950 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2011 Opel Astra. 1981 BMW 745 has automatic transmission and 2011 Opel Astra has manual transmission. 2011 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1981 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 BMW 745 | 2011 Opel Astra | |
| Make | BMW | Opel |
| Model | 745 | Astra |
| Year Released | 1981 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 252 HP | 197 HP |
| Engine RPM | 5200 RPM | 5400 RPM |
| Torque | 380 Nm | 262 Nm |
| Torque RPM | 2200 RPM | 1950 RPM |
| Engine Compression Ratio | 8.0:1 | 8.8:1 |
| Top Speed | 227 km/hour | 234 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1596 kg | 1625 kg |
| Vehicle Length | 4870 mm | 4300 mm |
| Vehicle Width | 1810 mm | 1760 mm |
| Vehicle Height | 1440 mm | 1440 mm |
| Wheelbase Size | 2770 mm | 2620 mm |
| Fuel Tank Capacity | 100 L | 52 L |
