2009 Acura MDX vs. 2011 Infiniti M
To start off, 2011 Infiniti M is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Acura MDX. In addition, the cost of maintenance, including insurance, on 2009 Acura MDX would be higher. At 5,600 cc (8 cylinders), 2011 Infiniti M is equipped with a bigger engine. In terms of performance, 2011 Infiniti M (420 HP @ 6000 RPM) has 120 more horse power than 2009 Acura MDX. (300 HP @ 6000 RPM) In normal driving conditions, 2011 Infiniti M should accelerate faster than 2009 Acura MDX. With that said, vehicle weight also plays an important factor in acceleration. 2011 Infiniti M weights approximately 132 kg more than 2009 Acura MDX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2011 Infiniti M (565 Nm @ 4400 RPM) has 192 more torque (in Nm) than 2009 Acura MDX. (373 Nm @ 5000 RPM). This means 2011 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2009 Acura MDX.
Compare all specifications:
| 2009 Acura MDX | 2011 Infiniti M | |
| Make | Acura | Infiniti |
| Model | MDX | M |
| Year Released | 2009 | 2011 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3663 cc | 5600 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 300 HP | 420 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 373 Nm | 565 Nm |
| Torque RPM | 5000 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1784 kg | 1916 kg |
| Vehicle Length | 4850 mm | 4945 mm |
| Vehicle Width | 2000 mm | 1844 mm |
| Vehicle Height | 1740 mm | 1514 mm |
| Wheelbase Size | 2760 mm | 2901 mm |
| Fuel Consumption Highway | 11.8 L/100km | 10.2 L/100km |
| Fuel Consumption City | 15.7 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 79 L | 76 L |
