2006 Infiniti QX56 vs. 2009 Infiniti M
To start off, 2009 Infiniti M is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Infiniti QX56. In addition, the cost of maintenance, including insurance, on 2006 Infiniti QX56 would be higher. At 5,555 cc (8 cylinders), 2006 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2006 Infiniti QX56 (315 HP @ 4900 RPM) has 12 more horse power than 2009 Infiniti M. (303 HP @ 6800 RPM). In normal driving conditions, 2006 Infiniti QX56 should accelerate faster than 2009 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti M weights approximately 402 kg more than 2006 Infiniti QX56.
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, 2006 Infiniti QX56 (529 Nm @ 3600 RPM) has 174 more torque (in Nm) than 2009 Infiniti M. (355 Nm @ 4800 RPM). This means 2006 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2009 Infiniti M.
Compare all specifications:
| 2006 Infiniti QX56 | 2009 Infiniti M | |
| Make | Infiniti | Infiniti |
| Model | QX56 | M |
| Year Released | 2006 | 2009 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5555 cc | 3498 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 315 HP | 303 HP |
| Engine RPM | 4900 RPM | 6800 RPM |
| Torque | 529 Nm | 355 Nm |
| Torque RPM | 3600 RPM | 4800 RPM |
| Engine Bore Size | 98 mm | 95.5 mm |
| Engine Stroke Size | 92 mm | 81.4 mm |
| Engine Compression Ratio | 9.8:1 | 10.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1320 kg | 1722 kg |
| Vehicle Length | 5260 mm | 4940 mm |
| Vehicle Width | 2010 mm | 1810 mm |
| Vehicle Height | 1980 mm | 1530 mm |
| Wheelbase Size | 3140 mm | 2910 mm |
| Fuel Consumption Highway | 13.1 L/100km | 10.7 L/100km |
| Fuel Consumption City | 18.1 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 106 L | 76 L |
