2006 Audi A8 vs. 2005 Audi S6
To start off, 2006 Audi A8 is newer by 1 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 5,997 cc, 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (450 HP @ 6200 RPM) has 115 more horse power than 2005 Audi S6. (335 HP @ 7000 RPM). In normal driving conditions, 2006 Audi A8 should accelerate faster than 2005 Audi S6. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 385 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.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2006 Audi A8 (580 Nm @ 4000 RPM) has 160 more torque (in Nm) than 2005 Audi S6. (420 Nm @ 3400 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S6.
Compare all specifications:
| 2006 Audi A8 | 2005 Audi S6 | |
| Make | Audi | Audi |
| Model | A8 | S6 |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5997 cc | 4172 cc |
| Engine Type | W | V |
| Horse Power | 450 HP | 335 HP |
| Engine RPM | 6200 RPM | 7000 RPM |
| Torque | 580 Nm | 420 Nm |
| Torque RPM | 4000 RPM | 3400 RPM |
| Engine Bore Size | 84 mm | 84.5 mm |
| Engine Stroke Size | 90.2 mm | 93 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Drive Type | 4WD | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2145 kg | 1760 kg |
| Wheelbase Size | 3080 mm | 2770 mm |
| Fuel Tank Capacity | 90 L | 82 L |
