2005 Audi A8 vs. 2008 Audi A6
To start off, 2008 Audi A6 is newer by 3 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 2,976 cc (6 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (218 HP @ 6300 RPM) has 40 more horse power than 2008 Audi A6. (178 HP @ 4000 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2008 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A6 weights approximately 830 kg more than 2005 Audi A8.
Because 2008 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A8. In wet, icy, snow, or gravel driving conditions, 2008 Audi A6 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 A6 (370 Nm @ 1500 RPM) has 70 more torque (in Nm) than 2005 Audi A8. (300 Nm @ 8200 RPM). This means 2008 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
Compare all specifications:
| 2005 Audi A8 | 2008 Audi A6 | |
| Make | Audi | Audi |
| Model | A8 | A6 |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 2496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 218 HP | 178 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 300 Nm | 370 Nm |
| Torque RPM | 8200 RPM | 1500 RPM |
| Engine Compression Ratio | 11.0:1 | 19.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 242 km/hour | 216 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 9.1 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 900 kg | 1730 kg |
| Vehicle Length | 5190 mm | 4800 mm |
| Vehicle Width | 1900 mm | 1820 mm |
| Vehicle Height | 1460 mm | 1460 mm |
| Wheelbase Size | 3080 mm | 2770 mm |
| Fuel Consumption Overall | 9.6 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
