2006 BMW 760 vs. 2005 BMW 645
To start off, 2006 BMW 760 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 645. In addition, the cost of maintenance, including insurance, on 2005 BMW 645 would be higher. At 5,972 cc (12 cylinders), 2006 BMW 760 is equipped with a bigger engine. In terms of performance, 2006 BMW 760 (439 HP @ 6000 RPM) has 113 more horse power than 2005 BMW 645. (326 HP @ 6100 RPM). In normal driving conditions, 2006 BMW 760 should accelerate faster than 2005 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 760 weights approximately 330 kg more than 2005 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 BMW 760 (600 Nm @ 3950 RPM) has 153 more torque (in Nm) than 2005 BMW 645. (447 Nm @ 3600 RPM). This means 2006 BMW 760 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 645.
Compare all specifications:
| 2006 BMW 760 | 2005 BMW 645 | |
| Make | BMW | BMW |
| Model | 760 | 645 |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5972 cc | 4392 cc |
| Engine Cylinders | 12 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 439 HP | 326 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 600 Nm | 447 Nm |
| Torque RPM | 3950 RPM | 3600 RPM |
| Engine Bore Size | 89.1 mm | 92 mm |
| Engine Stroke Size | 80 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 5.6 seconds | 6.1 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2225 kg | 1895 kg |
| Vehicle Length | 5180 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1860 mm |
| Vehicle Height | 1500 mm | 1380 mm |
| Wheelbase Size | 3140 mm | 2890 mm |
| Fuel Consumption Overall | 13.6 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 88 L | 70 L |
