1984 Alfa Romeo Alfa 6 vs. 1992 Opel Calibra
To start off, 1992 Opel Calibra is newer by 8 year(s). Which means there will be less support and parts availability for 1984 Alfa Romeo Alfa 6. In addition, the cost of maintenance, including insurance, on 1984 Alfa Romeo Alfa 6 would be higher. At 1,998 cc (4 cylinders), 1992 Opel Calibra is equipped with a bigger engine. In terms of performance, 1984 Alfa Romeo Alfa 6 (133 HP @ 5600 RPM) has 18 more horse power than 1992 Opel Calibra. (115 HP @ 5200 RPM). In normal driving conditions, 1984 Alfa Romeo Alfa 6 should accelerate faster than 1992 Opel Calibra. With that said, vehicle weight also plays an important factor in acceleration. 1984 Alfa Romeo Alfa 6 weights approximately 280 kg more than 1992 Opel Calibra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1984 Alfa Romeo Alfa 6 (178 Nm @ 4500 RPM) has 5 more torque (in Nm) than 1992 Opel Calibra. (173 Nm @ 2600 RPM). This means 1984 Alfa Romeo Alfa 6 will have an easier job in driving up hills or pulling heavy equipment than 1992 Opel Calibra.
Compare all specifications:
| 1984 Alfa Romeo Alfa 6 | 1992 Opel Calibra | |
| Make | Alfa Romeo | Opel |
| Model | Alfa 6 | Calibra |
| Year Released | 1984 | 1992 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 133 HP | 115 HP |
| Engine RPM | 5600 RPM | 5200 RPM |
| Torque | 178 Nm | 173 Nm |
| Torque RPM | 4500 RPM | 2600 RPM |
| Engine Bore Size | 80 mm | 86 mm |
| Engine Stroke Size | 66.2 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1470 kg | 1190 kg |
| Vehicle Length | 4690 mm | 4500 mm |
| Vehicle Width | 1690 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1610 mm |
| Wheelbase Size | 2460 mm | 2610 mm |
