1999 Audi S8 vs. 2013 Audi A8
To start off, 2013 Audi A8 is newer by 14 year(s). Which means there will be less support and parts availability for 1999 Audi S8. In addition, the cost of maintenance, including insurance, on 1999 Audi S8 would be higher. At 4,170 cc (8 cylinders), 1999 Audi S8 is equipped with a bigger engine. In terms of performance, 2013 Audi A8 (328 HP) has 81 more horse power than 1999 Audi S8. (247 HP) In normal driving conditions, 2013 Audi A8 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A8 weights approximately 80 kg more than 1999 Audi S8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are all wheel drive (AWD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2013 Audi A8 (441 Nm) has 111 more torque (in Nm) than 1999 Audi S8. (330 Nm). This means 2013 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8.
Compare all specifications:
| 1999 Audi S8 | 2013 Audi A8 | |
| Make | Audi | Audi |
| Model | S8 | A8 |
| Year Released | 1999 | 2013 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | W |
| Valves per Cylinder | 4 valves | 6 valves |
| Horse Power | 247 HP | 328 HP |
| Torque | 330 Nm | 441 Nm |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 89.5 mm |
| Engine Compression Ratio | 11.0:1 | 10.3:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Drive Type | AWD | AWD |
| Transmission Type | Automatic | CVT |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1750 kg | 1830 kg |
| Vehicle Length | 5040 mm | 5137 mm |
| Vehicle Width | 1890 mm | 2111 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2890 mm | 2992 mm |
| Fuel Consumption Highway | 9.5 L/100km | 7.1 L/100km |
| Fuel Consumption City | 21.7 L/100km | 11.7 L/100km |
