2005 Audi S4 vs. 1970 Porsche 917
To start off, 2005 Audi S4 is newer by 35 year(s). Which means there will be less support and parts availability for 1970 Porsche 917. In addition, the cost of maintenance, including insurance, on 1970 Porsche 917 would be higher. At 4,994 cc, 1970 Porsche 917 is equipped with a bigger engine. In terms of performance, 1970 Porsche 917 (520 HP) has 180 more horse power than 2005 Audi S4. (340 HP) In normal driving conditions, 1970 Porsche 917 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 1042 kg more than 1970 Porsche 917.
Let's talk about torque, 1970 Porsche 917 (610 Nm) has 200 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 1970 Porsche 917 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 1970 Porsche 917 | |
| Make | Audi | Porsche |
| Model | S4 | 917 |
| Year Released | 2005 | 1970 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4161 cc | 4994 cc |
| Horse Power | 340 HP | 520 HP |
| Torque | 410 Nm | 610 Nm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Vehicle Weight | 1840 kg | 798 kg |
