2005 BMW 645 vs. 2011 Rolls-Royce Phantom Drophead Coupe
To start off, 2011 Rolls-Royce Phantom Drophead Coupe is newer by 6 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 6,700 cc (12 cylinders), 2011 Rolls-Royce Phantom Drophead Coupe is equipped with a bigger engine. In terms of performance, 2011 Rolls-Royce Phantom Drophead Coupe (453 HP @ 5350 RPM) has 127 more horse power than 2005 BMW 645. (326 HP @ 6100 RPM) In normal driving conditions, 2011 Rolls-Royce Phantom Drophead Coupe should accelerate faster than 2005 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2011 Rolls-Royce Phantom Drophead Coupe weights approximately 775 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, 2011 Rolls-Royce Phantom Drophead Coupe (719 Nm @ 3500 RPM) has 272 more torque (in Nm) than 2005 BMW 645. (447 Nm @ 3600 RPM). This means 2011 Rolls-Royce Phantom Drophead Coupe will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 645. 2011 Rolls-Royce Phantom Drophead Coupe has automatic transmission and 2005 BMW 645 has manual transmission. 2005 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Rolls-Royce Phantom Drophead Coupe will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW 645 | 2011 Rolls-Royce Phantom Drophead Coupe | |
| Make | BMW | Rolls-Royce |
| Model | 645 | Phantom Drophead Coupe |
| Year Released | 2005 | 2011 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 6700 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 326 HP | 453 HP |
| Engine RPM | 6100 RPM | 5350 RPM |
| Torque | 447 Nm | 719 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1895 kg | 2670 kg |
| Vehicle Length | 4830 mm | 5608 mm |
| Vehicle Width | 1860 mm | 1986 mm |
| Vehicle Height | 1380 mm | 1580 mm |
| Wheelbase Size | 2890 mm | 3320 mm |
| Fuel Consumption | 10.2 L/100km | 13.1 L/100km |
| Fuel Consumption City | 15.7 L/100km | 21.4 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
