2005 Audi S4 vs. 1979 Saab 900
To start off, 2005 Audi S4 is newer by 26 year(s). Which means there will be less support and parts availability for 1979 Saab 900. In addition, the cost of maintenance, including insurance, on 1979 Saab 900 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 240 more horse power than 1979 Saab 900. (100 HP @ 5200 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1979 Saab 900. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 640 kg more than 1979 Saab 900. 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 248 more torque (in Nm) than 1979 Saab 900. (162 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1979 Saab 900.
Compare all specifications:
| 2005 Audi S4 | 1979 Saab 900 | |
| Make | Audi | Saab |
| Model | S4 | 900 |
| Year Released | 2005 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1983 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 100 HP |
| Engine RPM | 6300 RPM | 5200 RPM |
| Torque | 410 Nm | 162 Nm |
| Engine Bore Size | 85 mm | 90 mm |
| Engine Stroke Size | 93 mm | 78 mm |
| Engine Compression Ratio | 11.0:1 | 9.2:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1840 kg | 1200 kg |
| Vehicle Length | 4580 mm | 4750 mm |
| Vehicle Width | 1780 mm | 1700 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2530 mm |
| Fuel Tank Capacity | 63 L | 58 L |
