2008 Infiniti FX vs. 2005 Infiniti QX56
To start off, 2008 Infiniti FX is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Infiniti QX56. In addition, the cost of maintenance, including insurance, on 2005 Infiniti QX56 would be higher. At 5,555 cc (8 cylinders), 2005 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2008 Infiniti FX (320 HP @ 6000 RPM) has 5 more horse power than 2005 Infiniti QX56. (315 HP @ 6400 RPM). In normal driving conditions, 2008 Infiniti FX should accelerate faster than 2005 Infiniti QX56.
Because 2008 Infiniti FX is four wheel drive (4WD), it will have significant more traction and grip than 2005 Infiniti QX56. In wet, icy, snow, or gravel driving conditions, 2008 Infiniti FX will offer significantly more control. 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, 2005 Infiniti QX56 (529 Nm) has 75 more torque (in Nm) than 2008 Infiniti FX. (454 Nm). This means 2005 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2008 Infiniti FX.
Compare all specifications:
| 2008 Infiniti FX | 2005 Infiniti QX56 | |
| Make | Infiniti | Infiniti |
| Model | FX | QX56 |
| Year Released | 2008 | 2005 |
| Body Type | Crossover | SUV |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 5555 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 315 HP |
| Engine RPM | 6000 RPM | 6400 RPM |
| Torque | 454 Nm | 529 Nm |
| Engine Bore Size | 93 mm | 98 mm |
| Engine Stroke Size | 83 mm | 92 mm |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Length | 4810 mm | 5260 mm |
| Vehicle Width | 1930 mm | 2010 mm |
| Vehicle Height | 1680 mm | 1960 mm |
| Wheelbase Size | 2860 mm | 3140 mm |
| Fuel Tank Capacity | 90 L | 106 L |
