2006 BMW 645 vs. 2011 Rolls-Royce Phantom
To start off, 2011 Rolls-Royce Phantom is newer by 5 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 6,700 cc (12 cylinders), 2011 Rolls-Royce Phantom is equipped with a bigger engine. In terms of performance, 2011 Rolls-Royce Phantom (453 HP @ 5350 RPM) has 125 more horse power than 2006 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2011 Rolls-Royce Phantom should accelerate faster than 2006 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2011 Rolls-Royce Phantom weights approximately 880 kg more than 2006 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, 2011 Rolls-Royce Phantom (719 Nm @ 3500 RPM) has 269 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2011 Rolls-Royce Phantom will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645.
Compare all specifications:
| 2006 BMW 645 | 2011 Rolls-Royce Phantom | |
| Make | BMW | Rolls-Royce |
| Model | 645 | Phantom |
| Year Released | 2006 | 2011 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 6700 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 453 HP |
| Engine RPM | 6100 RPM | 5350 RPM |
| Torque | 450 Nm | 719 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1810 kg | 2690 kg |
| Vehicle Length | 4830 mm | 6091 mm |
| Vehicle Width | 1860 mm | 1989 mm |
| Vehicle Height | 1380 mm | 1638 mm |
| Wheelbase Size | 2790 mm | 3820 mm |
| Fuel Tank Capacity | 70 L | 100 L |
