1978 Alfa Romeo Alfetta vs. 1991 Opel Astra
To start off, 1991 Opel Astra is newer by 13 year(s). Which means there will be less support and parts availability for 1978 Alfa Romeo Alfetta. In addition, the cost of maintenance, including insurance, on 1978 Alfa Romeo Alfetta would be higher. At 1,747 cc (4 cylinders), 1978 Alfa Romeo Alfetta is equipped with a bigger engine. In terms of performance, 1978 Alfa Romeo Alfetta (144 HP @ 6500 RPM) has 88 more horse power than 1991 Opel Astra. (56 HP @ 4600 RPM). In normal driving conditions, 1978 Alfa Romeo Alfetta should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1978 Alfa Romeo Alfetta weights approximately 325 kg more than 1991 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 1978 Alfa Romeo Alfetta (169 Nm @ 3500 RPM) has 64 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 1978 Alfa Romeo Alfetta will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 1978 Alfa Romeo Alfetta | 1991 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | Alfetta | Astra |
| Year Released | 1978 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1700 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 144 HP | 56 HP |
| Engine RPM | 6500 RPM | 4600 RPM |
| Torque | 169 Nm | 105 Nm |
| Torque RPM | 3500 RPM | 2400 RPM |
| Engine Bore Size | 82 mm | 82.5 mm |
| Engine Stroke Size | 82.7 mm | 79.5 mm |
| Engine Compression Ratio | 10.3:1 | 23.0:1 |
| Top Speed | 210 km/hour | 149 km/hour |
| Acceleration 0-100mph | 9.2 seconds | 19.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1350 kg | 1025 kg |
| Vehicle Length | 4290 mm | 4280 mm |
| Vehicle Width | 1790 mm | 1690 mm |
| Vehicle Height | 1320 mm | 1430 mm |
| Wheelbase Size | 2550 mm | 2640 mm |
| Fuel Tank Capacity | 70 L | 75 L |
