2007 BMW 550 vs. 2003 Infiniti M
To start off, 2007 BMW 550 is newer by 4 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 4,799 cc (8 cylinders), 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 22 more horse power than 2003 Infiniti M. (340 HP @ 6400 RPM). In normal driving conditions, 2007 BMW 550 should accelerate faster than 2003 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti M weights approximately 87 kg more than 2007 BMW 550.
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, 2007 BMW 550 (490 Nm @ 3400 RPM) has 39 more torque (in Nm) than 2003 Infiniti M. (451 Nm @ 4000 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2003 Infiniti M.
Compare all specifications:
| 2007 BMW 550 | 2003 Infiniti M | |
| Make | BMW | Infiniti |
| Model | 550 | M |
| Year Released | 2007 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 4494 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 340 HP |
| Engine RPM | 6300 RPM | 6400 RPM |
| Torque | 490 Nm | 451 Nm |
| Torque RPM | 3400 RPM | 4000 RPM |
| Engine Bore Size | 93.1 mm | 93 mm |
| Engine Stroke Size | 88.3 mm | 82.7 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1660 kg | 1747 kg |
| Vehicle Length | 4850 mm | 5020 mm |
| Vehicle Width | 1470 mm | 1780 mm |
| Vehicle Height | 1850 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2810 mm |
| Fuel Tank Capacity | 70 L | 79 L |
