2009 Audi A8 vs. 2007 Infiniti QX56
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Infiniti QX56. In addition, the cost of maintenance, including insurance, on 2007 Infiniti QX56 would be higher. At 5,552 cc (8 cylinders), 2007 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2007 Infiniti QX56 (320 HP @ 4900 RPM) has 48 more horse power than 2009 Audi A8. (272 HP @ 3750 RPM) In normal driving conditions, 2007 Infiniti QX56 should accelerate faster than 2009 Audi A8.
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 Audi A8 (650 Nm @ 1800 RPM) has 117 more torque (in Nm) than 2007 Infiniti QX56. (533 Nm @ 3600 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Infiniti QX56.
Compare all specifications:
| 2009 Audi A8 | 2007 Infiniti QX56 | |
| Make | Audi | Infiniti |
| Model | A8 | QX56 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 5552 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 272 HP | 320 HP |
| Engine RPM | 3750 RPM | 4900 RPM |
| Torque | 650 Nm | 533 Nm |
| Torque RPM | 1800 RPM | 3600 RPM |
| Fuel Type | Diesel | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 5190 mm | 5260 mm |
| Vehicle Width | 1900 mm | 2010 mm |
| Vehicle Height | 1460 mm | 1980 mm |
| Wheelbase Size | 3080 mm | 3140 mm |
| Fuel Consumption Overall | 9.6 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 90 L | 106 L |
