2006 Audi A8 vs. 2009 Audi R8
To start off, 2009 Audi R8 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi A8. In addition, the cost of maintenance, including insurance, on 2006 Audi A8 would be higher. At 4,172 cc (8 cylinders), 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi R8 (420 HP @ 7800 RPM) has 91 more horse power than 2006 Audi A8. (329 HP @ 6500 RPM) In normal driving conditions, 2009 Audi R8 should accelerate faster than 2006 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 960 kg more than 2009 Audi R8.
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, both vehicles can yield 430 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2006 Audi A8 | 2009 Audi R8 | |
| Make | Audi | Audi |
| Model | A8 | R8 |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4172 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 329 HP | 420 HP |
| Engine RPM | 6500 RPM | 7800 RPM |
| Torque | 430 Nm | 430 Nm |
| Torque RPM | 3500 RPM | 4500 RPM |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1855 kg | 895 kg |
| Vehicle Length | 5060 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1260 mm |
| Wheelbase Size | 2950 mm | 2660 mm |
| Fuel Consumption Overall | 8.8 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
