2009 Audi A8 vs. 2007 Audi A6
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A6. In addition, the cost of maintenance, including insurance, on 2007 Audi A6 would be higher. At 4,163 cc (8 cylinders), 2007 Audi A6 is equipped with a bigger engine. In terms of performance, 2007 Audi A6 (350 HP @ 6800 RPM) has 28 more horse power than 2009 Audi A8. (322 HP @ 3750 RPM) In normal driving conditions, 2007 Audi A6 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 200 kg more than 2007 Audi A6.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 (650 Nm @ 1600 RPM) has 209 more torque (in Nm) than 2007 Audi A6. (441 Nm @ 3500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A6.
Compare all specifications:
| 2009 Audi A8 | 2007 Audi A6 | |
| Make | Audi | Audi |
| Model | A8 | A6 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4134 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 350 HP |
| Engine RPM | 3750 RPM | 6800 RPM |
| Torque | 650 Nm | 441 Nm |
| Torque RPM | 1600 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 85 mm |
| Engine Stroke Size | 95.5 mm | 93 mm |
| Fuel Type | Diesel | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1945 kg | 1745 kg |
| Vehicle Length | 5070 mm | 4920 mm |
| Vehicle Width | 1900 mm | 2020 mm |
| Vehicle Height | 1450 mm | 1460 mm |
| Wheelbase Size | 2950 mm | 2850 mm |
| Fuel Consumption Overall | 9.4 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 90 L | 80 L |
