2007 Infiniti QX56 vs. 2005 Mercedes-Benz S
To start off, 2007 Infiniti QX56 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz S 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 18 more horse power than 2005 Mercedes-Benz S. (302 HP @ 5600 RPM). In normal driving conditions, 2007 Infiniti QX56 should accelerate faster than 2005 Mercedes-Benz S.
Because 2005 Mercedes-Benz S is four wheel drive (4WD), it will have significant more traction and grip than 2007 Infiniti QX56. In wet, icy, snow, or gravel driving conditions, 2005 Mercedes-Benz S 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 73 more torque (in Nm) than 2005 Mercedes-Benz S. (460 Nm @ 2700 RPM). This means 2007 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercedes-Benz S.
Compare all specifications:
| 2007 Infiniti QX56 | 2005 Mercedes-Benz S | |
| Make | Infiniti | Mercedes-Benz |
| Model | QX56 | S |
| Year Released | 2007 | 2005 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5552 cc | 4966 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 320 HP | 302 HP |
| Engine RPM | 4900 RPM | 5600 RPM |
| Torque | 533 Nm | 460 Nm |
| Torque RPM | 3600 RPM | 2700 RPM |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 5260 mm | 5050 mm |
| Vehicle Width | 2010 mm | 1860 mm |
| Vehicle Height | 1960 mm | 1460 mm |
| Wheelbase Size | 3140 mm | 2720 mm |
| Fuel Consumption Overall | 15.7 L/100km | 12.9 L/100km |
| Fuel Tank Capacity | 106 L | 88 L |
