2007 Infiniti M vs. 2006 BMW 645
To start off, 2007 Infiniti M is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 53 more horse power than 2007 Infiniti M. (275 HP @ 6200 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2007 Infiniti M.
Because 2007 Infiniti M is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2007 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 87 more torque (in Nm) than 2007 Infiniti M. (363 Nm @ 4800 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 Infiniti M.
Compare all specifications:
| 2007 Infiniti M | 2006 BMW 645 | |
| Make | Infiniti | BMW |
| Model | M | 645 |
| Year Released | 2007 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3496 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 275 HP | 328 HP |
| Engine RPM | 6200 RPM | 6100 RPM |
| Torque | 363 Nm | 450 Nm |
| Torque RPM | 4800 RPM | 3600 RPM |
| Engine Bore Size | 95.5 mm | 92 mm |
| Engine Stroke Size | 81.4 mm | 82.7 mm |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4900 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1530 mm | 1380 mm |
| Wheelbase Size | 2910 mm | 2790 mm |
| Fuel Consumption Overall | 11.8 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 76 L | 70 L |
