2006 Audi A8 vs. 2005 Audi A6
To start off, 2006 Audi A8 is newer by 1 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 5,998 cc, 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (445 HP @ 6200 RPM) has 267 more horse power than 2005 Audi A6. (178 HP @ 6000 RPM). In normal driving conditions, 2006 Audi A8 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 440 kg more than 2005 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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, 2006 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, 2006 Audi A8 (580 Nm @ 4000 RPM) has 350 more torque (in Nm) than 2005 Audi A6. (230 Nm @ 3000 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2006 Audi A8 | 2005 Audi A6 | |
| Make | Audi | Audi |
| Model | A8 | A6 |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 2496 cc |
| Engine Type | W | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 445 HP | 178 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 580 Nm | 230 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 84 mm | 81.1 mm |
| Engine Stroke Size | 90.2 mm | 77.4 mm |
| Engine Compression Ratio | 11.0:1 | 10.3:1 |
| Acceleration 0-100mph | 5.1 seconds | 9.2 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1995 kg | 1555 kg |
| Vehicle Length | 5070 mm | 4920 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 3080 mm | 2850 mm |
| Fuel Consumption Overall | 13.8 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
