2006 BMW 645 vs. 2013 Rolls-Royce Ghost
To start off, 2013 Rolls-Royce Ghost is newer by 7 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 6,600 cc (12 cylinders), 2013 Rolls-Royce Ghost is equipped with a bigger engine. In terms of performance, 2013 Rolls-Royce Ghost (563 HP @ 5250 RPM) has 235 more horse power than 2006 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2013 Rolls-Royce Ghost should accelerate faster than 2006 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2013 Rolls-Royce Ghost weights approximately 634 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, 2013 Rolls-Royce Ghost (780 Nm @ 1500 RPM) has 330 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2013 Rolls-Royce Ghost will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645. 2013 Rolls-Royce Ghost has automatic transmission and 2006 BMW 645 has manual transmission. 2006 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 Rolls-Royce Ghost will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 2013 Rolls-Royce Ghost | |
| Make | BMW | Rolls-Royce |
| Model | 645 | Ghost |
| Year Released | 2006 | 2013 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 6600 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 328 HP | 563 HP |
| Engine RPM | 6100 RPM | 5250 RPM |
| Torque | 450 Nm | 780 Nm |
| Torque RPM | 3600 RPM | 1500 RPM |
| Engine Bore Size | 92 mm | 89 mm |
| Engine Stroke Size | 83 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1836 kg | 2470 kg |
| Vehicle Length | 4830 mm | 5399 mm |
| Vehicle Width | 1860 mm | 1948 mm |
| Vehicle Height | 1380 mm | 1550 mm |
| Wheelbase Size | 2790 mm | 3295 mm |
| Fuel Tank Capacity | 70 L | 82 L |
