2006 Audi A6 vs. 2008 Audi A8
To start off, 2008 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Audi A6. In addition, the cost of maintenance, including insurance, on 2006 Audi A6 would be higher. At 4,172 cc (8 cylinders), 2008 Audi A8 is equipped with a bigger engine. In terms of performance, 2008 Audi A8 (330 HP @ 6500 RPM) has 75 more horse power than 2006 Audi A6. (255 HP @ 6500 RPM) In normal driving conditions, 2008 Audi A8 should accelerate faster than 2006 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 400 kg more than 2006 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 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, 2008 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, 2008 Audi A8 (431 Nm @ 3500 RPM) has 101 more torque (in Nm) than 2006 Audi A6. (330 Nm @ 3250 RPM). This means 2008 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 | 2008 Audi A8 | |
| Make | Audi | Audi |
| Model | A6 | A8 |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3130 cc | 4172 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 255 HP | 330 HP |
| Engine RPM | 6500 RPM | 6500 RPM |
| Torque | 330 Nm | 431 Nm |
| Torque RPM | 3250 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1510 kg | 1910 kg |
| Vehicle Length | 4920 mm | 5190 mm |
| Vehicle Width | 2020 mm | 1900 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2850 mm | 3080 mm |
| Fuel Consumption Overall | 10.7 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 80 L | 90 L |
