1999 Audi RS4 vs. 2008 Audi S8
To start off, 2008 Audi S8 is newer by 9 year(s). Which means there will be less support and parts availability for 1999 Audi RS4. In addition, the cost of maintenance, including insurance, on 1999 Audi RS4 would be higher. At 5,204 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (444 HP @ 7000 RPM) has 194 more horse power than 1999 Audi RS4. (250 HP @ 6100 RPM) In normal driving conditions, 2008 Audi S8 should accelerate faster than 1999 Audi RS4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S8 weights approximately 320 kg more than 1999 Audi RS4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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. 2008 Audi S8 has automatic transmission and 1999 Audi RS4 has manual transmission. 1999 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Audi S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi RS4 | 2008 Audi S8 | |
| Make | Audi | Audi |
| Model | RS4 | S8 |
| Year Released | 1999 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Horse Power | 250 HP | 444 HP |
| Engine RPM | 6100 RPM | 7000 RPM |
| Engine Bore Size | 81.1 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Engine Compression Ratio | 9.0:1 | 12.5:1 |
| Acceleration 0-100mph | 4.9 seconds | 5.4 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1620 kg | 1940 kg |
| Vehicle Width | 1810 mm | 1900 mm |
| Wheelbase Size | 2610 mm | 2950 mm |
| Fuel Tank Capacity | 62 L | 90 L |
