2008 Infiniti QX56 vs. 2007 Mercedes-Benz S
To start off, 2008 Infiniti QX56 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2007 Mercedes-Benz S would be higher. At 5,550 cc (8 cylinders), 2008 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz S (510 HP @ 5000 RPM) has 190 more horse power than 2008 Infiniti QX56. (320 HP @ 5200 RPM) In normal driving conditions, 2007 Mercedes-Benz S should accelerate faster than 2008 Infiniti QX56. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz S weights approximately 860 kg more than 2008 Infiniti QX56. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Infiniti QX56 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Mercedes-Benz S. In wet, icy, snow, or gravel driving conditions, 2008 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 Mercedes-Benz S (830 Nm @ 1900 RPM) has 297 more torque (in Nm) than 2008 Infiniti QX56. (533 Nm @ 3400 RPM). This means 2007 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2008 Infiniti QX56.
Compare all specifications:
| 2008 Infiniti QX56 | 2007 Mercedes-Benz S | |
| Make | Infiniti | Mercedes-Benz |
| Model | QX56 | S |
| Year Released | 2008 | 2007 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5550 cc | 5512 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 320 HP | 510 HP |
| Engine RPM | 5200 RPM | 5000 RPM |
| Torque | 533 Nm | 830 Nm |
| Torque RPM | 3400 RPM | 1900 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1320 kg | 2180 kg |
| Vehicle Length | 5260 mm | 5210 mm |
| Vehicle Width | 2030 mm | 1880 mm |
| Vehicle Height | 1960 mm | 1480 mm |
| Wheelbase Size | 3140 mm | 3170 mm |
| Fuel Consumption City | 19.6 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 16.8 L/100km | 14.3 L/100km |
| Fuel Tank Capacity | 106 L | 90 L |
