2005 Audi S8 vs. 2006 Audi A4
To start off, 2006 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Audi S8. In addition, the cost of maintenance, including insurance, on 2005 Audi S8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S8 is equipped with a bigger engine. In terms of performance, 2006 Audi A4 (255 HP @ 6500 RPM) has 8 more horse power than 2005 Audi S8. (247 HP @ 4000 RPM) In normal driving conditions, 2006 Audi A4 should accelerate faster than 2005 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A4 weights approximately 110 kg more than 2005 Audi S8. 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, 2005 Audi S8 (450 Nm @ 3400 RPM) has 120 more torque (in Nm) than 2006 Audi A4. (330 Nm @ 3250 RPM). This means 2005 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A4.
Compare all specifications:
| 2005 Audi S8 | 2006 Audi A4 | |
| Make | Audi | Audi |
| Model | S8 | A4 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 3129 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 247 HP | 255 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Torque | 450 Nm | 330 Nm |
| Torque RPM | 3400 RPM | 3250 RPM |
| Drive Type | AWD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1770 kg | 1880 kg |
| Wheelbase Size | 2290 mm | 2660 mm |
| Fuel Tank Capacity | 90 L | 70 L |
