1999 Audi S8 vs. 2003 Audi RS4
To start off, 2003 Audi RS4 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 4,170 cc (8 cylinders), 1999 Audi S8 is equipped with a bigger engine. In terms of performance, 2003 Audi RS4 (377 HP @ 6300 RPM) has 130 more horse power than 1999 Audi S8. (247 HP @ 7000 RPM) In normal driving conditions, 2003 Audi RS4 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi S8 weights approximately 165 kg more than 2003 Audi RS4.
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 RS4 (449 Nm @ 2500 RPM) has 119 more torque (in Nm) than 1999 Audi S8. (330 Nm @ 3400 RPM). This means 2003 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8. 1999 Audi S8 has automatic transmission and 2003 Audi RS4 has manual transmission. 2003 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 Audi S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi S8 | 2003 Audi RS4 | |
| Make | Audi | Audi |
| Model | S8 | RS4 |
| Year Released | 1999 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 2671 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 247 HP | 377 HP |
| Engine RPM | 7000 RPM | 6300 RPM |
| Torque | 330 Nm | 449 Nm |
| Torque RPM | 3400 RPM | 2500 RPM |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1750 kg | 1585 kg |
| Vehicle Length | 5040 mm | 4480 mm |
| Vehicle Width | 1890 mm | 1740 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2890 mm | 2610 mm |
| Fuel Tank Capacity | 90 L | 55 L |
