2006 Infiniti Q45 vs. 2009 Infiniti M
To start off, 2009 Infiniti M is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2006 Infiniti Q45 would be higher. At 4,494 cc (8 cylinders), 2006 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2006 Infiniti Q45 (340 HP @ 6400 RPM) has 15 more horse power than 2009 Infiniti M. (325 HP @ 6400 RPM). In normal driving conditions, 2006 Infiniti Q45 should accelerate faster than 2009 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti M weights approximately 399 kg more than 2006 Infiniti Q45.
Because 2009 Infiniti M is four wheel drive (4WD), it will have significant more traction and grip than 2006 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2009 Infiniti M 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, 2009 Infiniti M (456 Nm @ 4000 RPM) has 4 more torque (in Nm) than 2006 Infiniti Q45. (452 Nm @ 4000 RPM). This means 2009 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2006 Infiniti Q45.
Compare all specifications:
| 2006 Infiniti Q45 | 2009 Infiniti M | |
| Make | Infiniti | Infiniti |
| Model | Q45 | M |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 4493 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 325 HP |
| Engine RPM | 6400 RPM | 6400 RPM |
| Torque | 452 Nm | 456 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1320 kg | 1719 kg |
| Vehicle Length | 5110 mm | 4940 mm |
| Vehicle Width | 1850 mm | 1810 mm |
| Vehicle Height | 1500 mm | 1530 mm |
| Wheelbase Size | 2880 mm | 2910 mm |
| Fuel Consumption | 10 L/100km | 11.8 L/100km |
| Fuel Consumption City | 14 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 15.8 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 81 L | 76 L |
