1998 Audi S8 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 11 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, 2009 Porsche 911 (473 HP) has 138 more horse power than 1998 Audi S8. (335 HP) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 1998 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 1998 Audi S8 weights approximately 300 kg more than 2009 Porsche 911.
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, 2009 Porsche 911 (620 Nm) has 63 more torque (in Nm) than 1998 Audi S8. (557 Nm). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1998 Audi S8.
Compare all specifications:
| 1998 Audi S8 | 2009 Porsche 911 | |
| Make | Audi | Porsche |
| Model | S8 | 911 |
| Year Released | 1998 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4172 cc | 3600 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 335 HP | 473 HP |
| Torque | 557 Nm | 620 Nm |
| Engine Bore Size | 84.6 mm | 100 mm |
| Engine Stroke Size | 93 mm | 76.4 mm |
| Top Speed | 251 km/hour | 310 km/hour |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1725 kg | 1425 kg |
| Vehicle Length | 5040 mm | 4460 mm |
| Vehicle Width | 1890 mm | 1310 mm |
| Vehicle Height | 1430 mm | 1860 mm |
| Wheelbase Size | 2890 mm | 2360 mm |
