2008 Audi A6 vs. 2009 Audi A8
To start off, 2009 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A6. In addition, the cost of maintenance, including insurance, on 2008 Audi A6 would be higher. At 5,204 cc (10 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (444 HP @ 7000 RPM) has 276 more horse power than 2008 Audi A6. (168 HP @ 6000 RPM) In normal driving conditions, 2009 Audi A8 should accelerate faster than 2008 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 425 kg more than 2008 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A6. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A8 (540 Nm @ 3500 RPM) has 310 more torque (in Nm) than 2008 Audi A6. (230 Nm @ 3200 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A6.
Compare all specifications:
| 2008 Audi A6 | 2009 Audi A8 | |
| Make | Audi | Audi |
| Model | A6 | A8 |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2393 cc | 5204 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 168 HP | 444 HP |
| Engine RPM | 6000 RPM | 7000 RPM |
| Torque | 230 Nm | 540 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Engine Compression Ratio | 10.5:1 | 12.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 215 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.4 seconds | 5.1 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1515 kg | 1940 kg |
| Vehicle Length | 4800 mm | 5070 mm |
| Vehicle Width | 1820 mm | 1900 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 2770 mm | 2950 mm |
| Fuel Consumption | 7.3 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 8.7 L/100km | 15.8 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
