2005 Audi S8 vs. 2006 Infiniti QX4
To start off, 2006 Infiniti QX4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Audi S8. In addition, the cost of maintenance, including insurance, on 2005 Audi S8 would be higher. At 5,552 cc (8 cylinders), 2006 Infiniti QX4 is equipped with a bigger engine. In terms of performance, 2006 Infiniti QX4 (315 HP @ 4900 RPM) has 68 more horse power than 2005 Audi S8. (247 HP @ 4000 RPM) In normal driving conditions, 2006 Infiniti QX4 should accelerate faster than 2005 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S8 weights approximately 450 kg more than 2006 Infiniti QX4.
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 Infiniti QX4 (530 Nm @ 3600 RPM) has 80 more torque (in Nm) than 2005 Audi S8. (450 Nm @ 3400 RPM). This means 2006 Infiniti QX4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S8.
Compare all specifications:
| 2005 Audi S8 | 2006 Infiniti QX4 | |
| Make | Audi | Infiniti |
| Model | S8 | QX4 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 5552 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 315 HP |
| Engine RPM | 4000 RPM | 4900 RPM |
| Torque | 450 Nm | 530 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1770 kg | 1320 kg |
| Wheelbase Size | 2290 mm | 3140 mm |
| Fuel Tank Capacity | 90 L | 60 L |
