2006 Audi S4 vs. 2009 Infiniti QX56
To start off, 2009 Infiniti QX56 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 5,552 cc (8 cylinders), 2009 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (340 HP @ 6800 RPM) has 20 more horse power than 2009 Infiniti QX56. (320 HP @ 5200 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 2009 Infiniti QX56. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 210 kg more than 2009 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, 2009 Infiniti QX56 (533 Nm @ 3400 RPM) has 123 more torque (in Nm) than 2006 Audi S4. (410 Nm @ 3500 RPM). This means 2009 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4.
Compare all specifications:
| 2006 Audi S4 | 2009 Infiniti QX56 | |
| Make | Audi | Infiniti |
| Model | S4 | QX56 |
| Year Released | 2006 | 2009 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 5552 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 320 HP |
| Engine RPM | 6800 RPM | 5200 RPM |
| Torque | 410 Nm | 533 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Drive Type | 4WD | 4WD |
| Number of Seats | 4 seats | 7 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1530 kg | 1320 kg |
| Vehicle Length | 4580 mm | 5260 mm |
| Vehicle Width | 1780 mm | 2010 mm |
| Vehicle Height | 1400 mm | 2010 mm |
| Wheelbase Size | 2660 mm | 3140 mm |
| Fuel Consumption | 10.8 L/100km | 13.8 L/100km |
| Fuel Consumption City | 15.8 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 13.2 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 63 L | 106 L |
