2009 Audi A8 vs. 2006 Audi A4
To start off, 2009 Audi A8 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 would be higher. At 2,976 cc (6 cylinders), 2006 Audi A4 is equipped with a bigger engine. In terms of performance, 2006 Audi A4 (217 HP @ 6300 RPM) has 10 more horse power than 2009 Audi A8. (207 HP @ 5500 RPM) In normal driving conditions, 2006 Audi A4 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 100 kg more than 2006 Audi A4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2006 Audi A4 (301 Nm @ 3200 RPM) has 21 more torque (in Nm) than 2009 Audi A8. (280 Nm @ 3000 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A8.
Compare all specifications:
| 2009 Audi A8 | 2006 Audi A4 | |
| Make | Audi | Audi |
| Model | A8 | A4 |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2772 cc | 2976 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 207 HP | 217 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 280 Nm | 301 Nm |
| Torque RPM | 3000 RPM | 3200 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 82.4 mm | 92.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 238 km/hour | 243 km/hour |
| Acceleration 0-100mph | 8 seconds | 7.8 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1690 kg | 1590 kg |
| Vehicle Length | 5070 mm | 4580 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1450 mm | 1400 mm |
| Wheelbase Size | 2950 mm | 2660 mm |
| Fuel Consumption Overall | 8.3 L/100km | 9.9 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
