2005 Audi A6 vs. 2004 Audi A8
To start off, 2005 Audi A6 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Audi A8. In addition, the cost of maintenance, including insurance, on 2004 Audi A8 would be higher. At 4,172 cc (8 cylinders), 2004 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (335 HP @ 4000 RPM) has 5 more horse power than 2004 Audi A8. (330 HP @ 6500 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 2004 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 104 kg more than 2004 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 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, 2004 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, 2004 Audi A8 (450 Nm) has 30 more torque (in Nm) than 2005 Audi A6. (420 Nm). This means 2004 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 2004 Audi A8 | |
| Make | Audi | Audi |
| Model | A6 | A8 |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 335 HP | 330 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Torque | 420 Nm | 450 Nm |
| Engine Bore Size | 85 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 93 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1880 kg | 1776 kg |
| Vehicle Length | 4920 mm | 5060 mm |
| Vehicle Width | 2020 mm | 1900 mm |
| Vehicle Height | 1460 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Consumption Overall | 11.8 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 80 L | 90 L |
