2006 BMW 550 vs. 2007 Infiniti QX56
To start off, 2007 Infiniti QX56 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW 550. In addition, the cost of maintenance, including insurance, on 2006 BMW 550 would be higher. At 5,552 cc (8 cylinders), 2007 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2006 BMW 550 (360 HP @ 6300 RPM) has 40 more horse power than 2007 Infiniti QX56. (320 HP @ 4900 RPM). In normal driving conditions, 2006 BMW 550 should accelerate faster than 2007 Infiniti QX56.
Because 2007 Infiniti QX56 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 550. In wet, icy, snow, or gravel driving conditions, 2007 Infiniti QX56 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, 2007 Infiniti QX56 (533 Nm @ 3600 RPM) has 45 more torque (in Nm) than 2006 BMW 550. (488 Nm @ 3400 RPM). This means 2007 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 550.
Compare all specifications:
| 2006 BMW 550 | 2007 Infiniti QX56 | |
| Make | BMW | Infiniti |
| Model | 550 | QX56 |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4801 cc | 5552 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 320 HP |
| Engine RPM | 6300 RPM | 4900 RPM |
| Torque | 488 Nm | 533 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4860 mm | 5260 mm |
| Vehicle Width | 1850 mm | 2010 mm |
| Vehicle Height | 1470 mm | 1980 mm |
| Wheelbase Size | 2890 mm | 3140 mm |
| Fuel Consumption | 10.2 L/100km | 13.1 L/100km |
| Fuel Consumption City | 14.7 L/100km | 18.1 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 70 L | 106 L |
