2009 Audi A8 vs. 2005 Audi A8
To start off, 2009 Audi A8 is newer by 4 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 4,178 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (335 HP @ 4000 RPM) has 106 more horse power than 2009 Audi A8. (229 HP @ 4000 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 115 kg more than 2009 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Audi A8 (450 Nm) has 20 more torque (in Nm) than 2005 Audi A8. (430 Nm). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
Compare all specifications:
| 2009 Audi A8 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A8 | A8 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 4178 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 229 HP | 335 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 450 Nm | 430 Nm |
| Engine Bore Size | 83 mm | 85 mm |
| Engine Stroke Size | 91.4 mm | 93 mm |
| Engine Compression Ratio | 17.0:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1830 kg | 1945 kg |
| Vehicle Height | 1900 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 2950 mm |
| Fuel Consumption Overall | 8.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
