2008 Audi A8 vs. 2008 Audi S8
To start off, both 2008 Audi A8 and 2008 Audi S8 were released in the same year (2008). Therefore the support and the availability on parts for both vehicles should be relatively similar. 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 213 more horse power than 2008 Audi A8. (231 HP @ 4000 RPM) In normal driving conditions, 2008 Audi S8 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S8 weights approximately 110 kg more than 2008 Audi A8. 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. Let's talk about torque, 2008 Audi S8 (540 Nm @ 3500 RPM) has 90 more torque (in Nm) than 2008 Audi A8. (450 Nm @ 1400 RPM). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8.
Compare all specifications:
| 2008 Audi A8 | 2008 Audi S8 | |
| Make | Audi | Audi |
| Model | A8 | S8 |
| Year Released | 2008 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 231 HP | 444 HP |
| Engine RPM | 4000 RPM | 7000 RPM |
| Torque | 450 Nm | 540 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84.5 mm |
| Engine Stroke Size | 91.4 mm | 92.8 mm |
| Engine Compression Ratio | 17.0:1 | 12.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 243 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 5.4 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1830 kg | 1940 kg |
| Vehicle Width | 1900 mm | 1900 mm |
| Wheelbase Size | 2950 mm | 2950 mm |
| Fuel Consumption Overall | 8.4 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
