2004 Audi A6 vs. 2007 Audi A8
To start off, 2007 Audi A8 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Audi A6. In addition, the cost of maintenance, including insurance, on 2004 Audi A6 would be higher. At 5,996 cc, 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (444 HP @ 6200 RPM) has 197 more horse power than 2004 Audi A6. (247 HP @ 6300 RPM) In normal driving conditions, 2007 Audi A8 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 273 kg more than 2004 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Audi A6. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Audi A8 (580 Nm) has 230 more torque (in Nm) than 2004 Audi A6. (350 Nm). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6.
Compare all specifications:
| 2004 Audi A6 | 2007 Audi A8 | |
| Make | Audi | Audi |
| Model | A6 | A8 |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 5996 cc |
| Engine Type | V | W |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 444 HP |
| Engine RPM | 6300 RPM | 6200 RPM |
| Torque | 350 Nm | 580 Nm |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 86 mm | 90.2 mm |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1722 kg | 1995 kg |
| Vehicle Length | 4880 mm | 5070 mm |
| Vehicle Width | 1940 mm | 1900 mm |
| Vehicle Height | 1460 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 3080 mm |
| Fuel Consumption Overall | 11.2 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
