2005 Audi S6 vs. 2007 Audi S8
To start off, 2007 Audi S8 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S6. In addition, the cost of maintenance, including insurance, on 2005 Audi S6 would be higher. At 5,204 cc (10 cylinders), 2007 Audi S8 is equipped with a bigger engine. In terms of performance, 2007 Audi S8 (444 HP @ 7000 RPM) has 109 more horse power than 2005 Audi S6. (335 HP @ 7000 RPM) In normal driving conditions, 2007 Audi S8 should accelerate faster than 2005 Audi S6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S8 weights approximately 180 kg more than 2005 Audi S6. 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, 2007 Audi S8 (540 Nm @ 3500 RPM) has 120 more torque (in Nm) than 2005 Audi S6. (420 Nm @ 3400 RPM). This means 2007 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S6.
Compare all specifications:
| 2005 Audi S6 | 2007 Audi S8 | |
| Make | Audi | Audi |
| Model | S6 | S8 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 5204 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Horse Power | 335 HP | 444 HP |
| Engine RPM | 7000 RPM | 7000 RPM |
| Torque | 420 Nm | 540 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 5.1 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 | 1760 kg | 1940 kg |
| Wheelbase Size | 2770 mm | 2950 mm |
| Fuel Tank Capacity | 82 L | 90 L |
