2003 Infiniti M vs. 2007 BMW 645
To start off, 2007 BMW 645 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 4,494 cc (8 cylinders), 2003 Infiniti M is equipped with a bigger engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 12 more horse power than 2007 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 2003 Infiniti M should accelerate faster than 2007 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 68 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, 2003 Infiniti M (451 Nm @ 4000 RPM) has 1 more torque (in Nm) than 2007 BMW 645. (450 Nm @ 3600 RPM). This means 2003 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 645.
Compare all specifications:
2003 Infiniti M | 2007 BMW 645 | |
Make | Infiniti | BMW |
Model | M | 645 |
Year Released | 2003 | 2007 |
Body Type | Sedan | Convertible |
Engine Position | Front | Front |
Engine Size | 4494 cc | 4398 cc |
Engine Cylinders | 8 cylinders | 8 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 340 HP | 328 HP |
Engine RPM | 6400 RPM | 6100 RPM |
Torque | 451 Nm | 450 Nm |
Torque RPM | 4000 RPM | 3600 RPM |
Engine Bore Size | 93 mm | 92 mm |
Engine Stroke Size | 82.7 mm | 82.7 mm |
Engine Compression Ratio | 10.5:1 | 10.0:1 |
Fuel Type | Gasoline | Gasoline - Premium |
Drive Type | Rear | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Weight | 1747 kg | 1815 kg |
Vehicle Length | 5020 mm | 4830 mm |
Vehicle Width | 1780 mm | 1860 mm |
Vehicle Height | 1470 mm | 1380 mm |
Wheelbase Size | 2810 mm | 2790 mm |
Fuel Tank Capacity | 79 L | 70 L |