2004 Audi A8 vs. 2006 Infiniti QX56
To start off, 2006 Infiniti QX56 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Audi A8. In addition, the cost of maintenance, including insurance, on 2004 Audi A8 would be higher. At 5,998 cc, 2004 Audi A8 is equipped with a bigger engine. In terms of performance, 2004 Audi A8 (450 HP @ 6300 RPM) has 135 more horse power than 2006 Infiniti QX56. (315 HP @ 4900 RPM). In normal driving conditions, 2004 Audi A8 should accelerate faster than 2006 Infiniti QX56. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A8 weights approximately 675 kg more than 2006 Infiniti QX56. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2004 Audi A8 (560 Nm @ 4000 RPM) has 31 more torque (in Nm) than 2006 Infiniti QX56. (529 Nm @ 3600 RPM). This means 2004 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Infiniti QX56.
Compare all specifications:
| 2004 Audi A8 | 2006 Infiniti QX56 | |
| Make | Audi | Infiniti |
| Model | A8 | QX56 |
| Year Released | 2004 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 5555 cc |
| Engine Type | W | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 315 HP |
| Engine RPM | 6300 RPM | 4900 RPM |
| Torque | 560 Nm | 529 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Engine Bore Size | 84.1 mm | 98 mm |
| Engine Stroke Size | 90.2 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 9.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1995 kg | 1320 kg |
| Vehicle Length | 5060 mm | 5260 mm |
| Vehicle Width | 1900 mm | 2010 mm |
| Vehicle Height | 1450 mm | 1980 mm |
| Wheelbase Size | 2950 mm | 3140 mm |
