2009 Audi A8 vs. 2007 Audi S6
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi S6. In addition, the cost of maintenance, including insurance, on 2007 Audi S6 would be higher. Both 2009 Audi A8 and 2007 Audi S6 are equipped with a 4,172 cc engine. In terms of performance, 2007 Audi S6 (335 HP @ 7000 RPM) has 5 more horse power than 2009 Audi A8. (330 HP @ 6500 RPM) In normal driving conditions, 2007 Audi S6 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 95 kg more than 2007 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, 2009 Audi A8 (430 Nm @ 3500 RPM) has 10 more torque (in Nm) than 2007 Audi S6. (420 Nm @ 3400 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S6.
Compare all specifications:
| 2009 Audi A8 | 2007 Audi S6 | |
| Make | Audi | Audi |
| Model | A8 | S6 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 330 HP | 335 HP |
| Engine RPM | 6500 RPM | 7000 RPM |
| Torque | 430 Nm | 420 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 245 km/hour |
| Acceleration 0-100mph | 6.6 seconds | 6.7 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 | 1855 kg | 1760 kg |
| Vehicle Length | 5060 mm | 4840 mm |
| Vehicle Width | 1900 mm | 2000 mm |
| Vehicle Height | 1450 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 2770 mm |
| Fuel Consumption Overall | 11.9 L/100km | 14.3 L/100km |
| Fuel Tank Capacity | 90 L | 82 L |
