1966 Alfa Romeo Giulia vs. 1991 Opel Astra
To start off, 1991 Opel Astra is newer by 25 year(s). Which means there will be less support and parts availability for 1966 Alfa Romeo Giulia. In addition, the cost of maintenance, including insurance, on 1966 Alfa Romeo Giulia would be higher. At 1,686 cc (4 cylinders), 1991 Opel Astra is equipped with a bigger engine. In terms of performance, 1966 Alfa Romeo Giulia (105 HP @ 6200 RPM) has 23 more horse power than 1991 Opel Astra. (82 HP @ 4400 RPM). In normal driving conditions, 1966 Alfa Romeo Giulia should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1991 Opel Astra weights approximately 158 kg more than 1966 Alfa Romeo Giulia.
Let's talk about torque, 1991 Opel Astra (168 Nm @ 2400 RPM) has 35 more torque (in Nm) than 1966 Alfa Romeo Giulia. (133 Nm @ 4500 RPM). This means 1991 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1966 Alfa Romeo Giulia.
Compare all specifications:
| 1966 Alfa Romeo Giulia | 1991 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | Giulia | Astra |
| Year Released | 1966 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 1686 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 105 HP | 82 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Torque | 133 Nm | 168 Nm |
| Torque RPM | 4500 RPM | 2400 RPM |
| Engine Compression Ratio | 9.2:1 | 22.0:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 972 kg | 1130 kg |
| Vehicle Length | 4130 mm | 4060 mm |
| Vehicle Width | 1670 mm | 1690 mm |
| Vehicle Height | 1250 mm | 1430 mm |
| Wheelbase Size | 2260 mm | 2640 mm |
| Fuel Tank Capacity | 100 L | 75 L |
