1981 Alfa Romeo Alfa 6 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Alfa Romeo Alfa 6. In addition, the cost of maintenance, including insurance, on 1981 Alfa Romeo Alfa 6 would be higher. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 207 more horse power than 1981 Alfa Romeo Alfa 6. (133 HP @ 5600 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 1981 Alfa Romeo Alfa 6. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 370 kg more than 1981 Alfa Romeo Alfa 6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 232 more torque (in Nm) than 1981 Alfa Romeo Alfa 6. (178 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Alfa 6.
Compare all specifications:
| 1981 Alfa Romeo Alfa 6 | 2005 Audi S4 | |
| Make | Alfa Romeo | Audi |
| Model | Alfa 6 | S4 |
| Year Released | 1981 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 4161 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 5 valves |
| Horse Power | 133 HP | 340 HP |
| Engine RPM | 5600 RPM | 6300 RPM |
| Torque | 178 Nm | 410 Nm |
| Engine Bore Size | 80 mm | 85 mm |
| Engine Stroke Size | 66.2 mm | 93 mm |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1470 kg | 1840 kg |
| Vehicle Length | 4770 mm | 4580 mm |
| Vehicle Width | 1690 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2610 mm | 2660 mm |
