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 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 7000 RPM) has 236 more horse power than 1981 Alfa Romeo Alfa 6. (104 HP @ 4300 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 275 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.
Because 2005 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 Alfa Romeo Alfa 6. In wet, icy, snow, or gravel driving conditions, 2005 Audi S4 will offer significantly more control. 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, 2005 Audi S4 (410 Nm @ 3500 RPM) has 204 more torque (in Nm) than 1981 Alfa Romeo Alfa 6. (206 Nm @ 2400 RPM). 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 | 2494 cc | 4163 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 104 HP | 340 HP |
| Engine RPM | 4300 RPM | 7000 RPM |
| Torque | 206 Nm | 410 Nm |
| Torque RPM | 2400 RPM | 3500 RPM |
| Engine Bore Size | 88 mm | 85 mm |
| Engine Stroke Size | 82 mm | 93 mm |
| Engine Compression Ratio | 22.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1580 kg | 1855 kg |
| Vehicle Length | 4690 mm | 4580 mm |
| Vehicle Width | 1690 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2610 mm | 2660 mm |
| Fuel Tank Capacity | 50 L | 63 L |
