1999 Audi S8 vs. 2003 Audi A8
To start off, 2003 Audi A8 is newer by 4 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. Both 1999 Audi S8 and 2003 Audi A8 are equipped with a 4,172 cc engine. In terms of performance, 1999 Audi S8 (335 HP @ 7000 RPM) has 5 more horse power than 2003 Audi A8. (330 HP @ 6500 RPM). In normal driving conditions, 1999 Audi S8 should accelerate faster than 2003 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A8 weights approximately 210 kg more than 1999 Audi S8.
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, 2003 Audi A8 (430 Nm @ 3500 RPM) has 99 more torque (in Nm) than 1999 Audi S8. (331 Nm @ 3400 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8. 2003 Audi A8 has automatic transmission and 1999 Audi S8 has manual transmission. 1999 Audi S8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi S8 | 2003 Audi A8 | |
| Make | Audi | Audi |
| Model | S8 | A8 |
| Year Released | 1999 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 335 HP | 330 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 331 Nm | 430 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 93 mm |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.4 seconds | 6.7 seconds |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1730 kg | 1940 kg |
| Vehicle Length | 5040 mm | 5190 mm |
| Vehicle Width | 1890 mm | 1900 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2890 mm | 3080 mm |
| Fuel Consumption Highway | 9.7 L/100km | 8.7 L/100km |
| Fuel Consumption City | 20.8 L/100km | 17.5 L/100km |
| Fuel Consumption Overall | 13.7 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
