2003 Audi A8 vs. 1999 Audi S8
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. At 4,172 cc (8 cylinders), 1999 Audi S8 is equipped with a bigger engine. In terms of performance, 1999 Audi S8 (335 HP @ 7000 RPM) has 59 more horse power than 2003 Audi A8. (276 HP @ 3750 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 150 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 (650 Nm @ 1800 RPM) has 319 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:
| 2003 Audi A8 | 1999 Audi S8 | |
| Make | Audi | Audi |
| Model | A8 | S8 |
| Year Released | 2003 | 1999 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 276 HP | 335 HP |
| Engine RPM | 3750 RPM | 7000 RPM |
| Torque | 650 Nm | 331 Nm |
| Torque RPM | 1800 RPM | 3400 RPM |
| Engine Bore Size | 81.1 mm | 84.5 mm |
| Engine Stroke Size | 95.5 mm | 93 mm |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1880 kg | 1730 kg |
| Vehicle Length | 5060 mm | 5040 mm |
| Vehicle Width | 1900 mm | 1890 mm |
| Vehicle Height | 1450 mm | 1420 mm |
| Wheelbase Size | 2770 mm | 2890 mm |
| Fuel Consumption | 7.5 L/100km | 9.7 L/100km |
| Fuel Consumption City | 13.4 L/100km | 20.8 L/100km |
| Fuel Consumption Overall | 9.6 L/100km | 13.7 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
