2009 Audi A8 vs. 2005 Audi A6
To start off, 2009 Audi A8 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 2,983 cc (6 cylinders), 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (255 HP @ 6300 RPM) has 26 more horse power than 2009 Audi A8. (229 HP @ 4000 RPM) In normal driving conditions, 2005 Audi A6 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 35 kg more than 2005 Audi A6.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A6. In wet, icy, snow, or gravel driving conditions, 2009 Audi A8 will offer significantly more control. 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 (450 Nm) has 130 more torque (in Nm) than 2005 Audi A6. (320 Nm). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2009 Audi A8 | 2005 Audi A6 | |
| Make | Audi | Audi |
| Model | A8 | A6 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 2983 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 229 HP | 255 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 450 Nm | 320 Nm |
| Engine Compression Ratio | 17.0:1 | 12.5:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1830 kg | 1795 kg |
| Vehicle Height | 1900 mm | 1470 mm |
| Wheelbase Size | 2950 mm | 2760 mm |
| Fuel Tank Capacity | 90 L | 80 L |
