2005 Audi S6 vs. 2004 Audi A8
To start off, 2005 Audi S6 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Audi A8. In addition, the cost of maintenance, including insurance, on 2004 Audi A8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S6 is equipped with a bigger engine. In terms of performance, 2005 Audi S6 (335 HP @ 7000 RPM) has 105 more horse power than 2004 Audi A8. (230 HP @ 4000 RPM). In normal driving conditions, 2005 Audi S6 should accelerate faster than 2004 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A8 weights approximately 70 kg more than 2005 Audi S6.
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, 2004 Audi A8 (450 Nm @ 1400 RPM) has 30 more torque (in Nm) than 2005 Audi S6. (420 Nm @ 3400 RPM). This means 2004 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S6.
Compare all specifications:
| 2005 Audi S6 | 2004 Audi A8 | |
| Make | Audi | Audi |
| Model | S6 | A8 |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2966 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 335 HP | 230 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 420 Nm | 450 Nm |
| Torque RPM | 3400 RPM | 1400 RPM |
| Engine Bore Size | 84.5 mm | 83 mm |
| Engine Stroke Size | 93 mm | 91.4 mm |
| Engine Compression Ratio | 11.0:1 | 17.0:1 |
| Acceleration 0-100mph | 6.7 seconds | 7.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1760 kg | 1830 kg |
| Wheelbase Size | 2770 mm | 2950 mm |
| Fuel Tank Capacity | 82 L | 90 L |
