1998 Audi S8 vs. 2008 Audi S4
To start off, 2008 Audi S4 is newer by 10 year(s). Which means there will be less support and parts availability for 1998 Audi S8. In addition, the cost of maintenance, including insurance, on 1998 Audi S8 would be higher. At 4,172 cc (8 cylinders), 1998 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (340 HP) has 5 more horse power than 1998 Audi S8. (335 HP) In normal driving conditions, 2008 Audi S4 should accelerate faster than 1998 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 1998 Audi S8 weights approximately 565 kg more than 2008 Audi S4.
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, 1998 Audi S8 (557 Nm) has 147 more torque (in Nm) than 2008 Audi S4. (410 Nm). This means 1998 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi S4.
Compare all specifications:
| 1998 Audi S8 | 2008 Audi S4 | |
| Make | Audi | Audi |
| Model | S8 | S4 |
| Year Released | 1998 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 335 HP | 340 HP |
| Torque | 557 Nm | 410 Nm |
| Engine Bore Size | 84.6 mm | 84.6 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1725 kg | 1160 kg |
| Vehicle Length | 5040 mm | 4580 mm |
| Vehicle Width | 1890 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2890 mm | 2660 mm |
