2006 BMW X5 vs. 2003 Infiniti M
To start off, 2006 BMW X5 is newer by 3 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. At 4,494 cc (8 cylinders), 2003 Infiniti M is equipped with a bigger engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 115 more horse power than 2006 BMW X5. (225 HP @ 5900 RPM) In normal driving conditions, 2003 Infiniti M should accelerate faster than 2006 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 88 kg more than 2003 Infiniti M.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Infiniti M. In wet, icy, snow, or gravel driving conditions, 2006 BMW X5 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, 2003 Infiniti M (451 Nm @ 4000 RPM) has 161 more torque (in Nm) than 2006 BMW X5. (290 Nm @ 3500 RPM). This means 2003 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2006 BMW X5 | 2003 Infiniti M | |
| Make | BMW | Infiniti |
| Model | X5 | M |
| Year Released | 2006 | 2003 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 340 HP |
| Engine RPM | 5900 RPM | 6400 RPM |
| Torque | 290 Nm | 451 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 89.6 mm | 82.7 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1835 kg | 1747 kg |
| Vehicle Length | 4670 mm | 5020 mm |
| Vehicle Width | 1880 mm | 1780 mm |
| Vehicle Height | 1770 mm | 1470 mm |
| Wheelbase Size | 2830 mm | 2810 mm |
| Fuel Tank Capacity | 92 L | 79 L |
