1977 BMW 728 vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 29 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 71 more horse power than 2006 Opel Astra. (99 HP @ 4400 RPM). In normal driving conditions, 1977 BMW 728 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 171 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 1977 BMW 728 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 1977 BMW 728. 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 Opel Astra (240 Nm @ 2300 RPM) has 5 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2006 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 1977 BMW 728 | 2006 Opel Astra | |
| Make | BMW | Opel |
| Model | 728 | Astra |
| Year Released | 1977 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 1686 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 99 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 235 Nm | 240 Nm |
| Torque RPM | 3700 RPM | 2300 RPM |
| Engine Bore Size | 86 mm | 79 mm |
| Engine Stroke Size | 80 mm | 86 mm |
| Engine Compression Ratio | 9.0:1 | 18.4:1 |
| Top Speed | 193 km/hour | 182 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1536 kg | 1365 kg |
| Vehicle Length | 4870 mm | 4300 mm |
| Vehicle Width | 1810 mm | 1760 mm |
| Vehicle Height | 1440 mm | 1440 mm |
| Wheelbase Size | 2800 mm | 2620 mm |
| Fuel Tank Capacity | 85 L | 52 L |
