2006 Audi A6 vs. 2005 Audi A8
To start off, 2006 Audi A6 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 3,130 cc (6 cylinders), 2006 Audi A6 is equipped with a bigger engine. In terms of performance, 2006 Audi A6 (255 HP @ 6500 RPM) has 25 more horse power than 2005 Audi A8. (230 HP @ 4000 RPM). In normal driving conditions, 2006 Audi A6 should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 320 kg more than 2006 Audi A6.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Audi A6. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Audi A8 (450 Nm @ 1400 RPM) has 120 more torque (in Nm) than 2006 Audi A6. (330 Nm @ 3250 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A6.
Compare all specifications:
| 2006 Audi A6 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A6 | A8 |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3130 cc | 2966 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 255 HP | 230 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 330 Nm | 450 Nm |
| Torque RPM | 3250 RPM | 1400 RPM |
| Engine Bore Size | 84.5 mm | 83 mm |
| Engine Stroke Size | 92.8 mm | 91.4 mm |
| Engine Compression Ratio | 13.0:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1510 kg | 1830 kg |
| Vehicle Length | 4920 mm | 5060 mm |
| Vehicle Width | 2020 mm | 1900 mm |
| Vehicle Height | 1470 mm | 1450 mm |
| Wheelbase Size | 2850 mm | 2950 mm |
| Fuel Consumption Overall | 10.7 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 80 L | 90 L |
