2003 Infiniti M vs. 2005 Infiniti M
To start off, 2005 Infiniti M is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Infiniti M. In addition, the cost of maintenance, including insurance, on 2003 Infiniti M would be higher. Both 2003 Infiniti M and 2005 Infiniti M are equipped with a 4,494 cc engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 5 more horse power than 2005 Infiniti M. (335 HP @ 6400 RPM). In normal driving conditions, 2003 Infiniti M should accelerate faster than 2005 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2005 Infiniti M weights approximately 44 kg more than 2003 Infiniti M.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2005 Infiniti M (453 Nm @ 4000 RPM) has 2 more torque (in Nm) than 2003 Infiniti M. (451 Nm @ 4000 RPM). This means 2005 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2003 Infiniti M.
Compare all specifications:
| 2003 Infiniti M | 2005 Infiniti M | |
| Make | Infiniti | Infiniti |
| Model | M | M |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 4494 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 335 HP |
| Engine RPM | 6400 RPM | 6400 RPM |
| Torque | 451 Nm | 453 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 93 mm | 93 mm |
| Engine Stroke Size | 82.7 mm | 82.7 mm |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1747 kg | 1791 kg |
| Vehicle Length | 5020 mm | 4900 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1520 mm |
| Wheelbase Size | 2810 mm | 2910 mm |
| Fuel Tank Capacity | 79 L | 75 L |
