2009 Rolls-Royce Phantom Drophead Coupe vs. 2005 Porsche 911
To start off, 2009 Rolls-Royce Phantom Drophead Coupe is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 6,749 cc (12 cylinders), 2009 Rolls-Royce Phantom Drophead Coupe is equipped with a bigger engine. In terms of performance, 2009 Rolls-Royce Phantom Drophead Coupe (448 HP @ 5350 RPM) has 133 more horse power than 2005 Porsche 911. (315 HP @ 6800 RPM). In normal driving conditions, 2009 Rolls-Royce Phantom Drophead Coupe should accelerate faster than 2005 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2009 Rolls-Royce Phantom Drophead Coupe weights approximately 1055 kg more than 2005 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Rolls-Royce Phantom Drophead Coupe. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 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, 2009 Rolls-Royce Phantom Drophead Coupe (531 Nm @ 3500 RPM) has 161 more torque (in Nm) than 2005 Porsche 911. (370 Nm @ 4250 RPM). This means 2009 Rolls-Royce Phantom Drophead Coupe will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2009 Rolls-Royce Phantom Drophead Coupe | 2005 Porsche 911 | |
| Make | Rolls-Royce | Porsche |
| Model | Phantom Drophead Coupe | 911 |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 6749 cc | 3596 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 448 HP | 315 HP |
| Engine RPM | 5350 RPM | 6800 RPM |
| Torque | 531 Nm | 370 Nm |
| Torque RPM | 3500 RPM | 4250 RPM |
| Engine Bore Size | 92 mm | 96 mm |
| Engine Stroke Size | 84.6 mm | 82.8 mm |
| Engine Compression Ratio | 11.1:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 239 km/hour | 280 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2620 kg | 1565 kg |
| Vehicle Length | 5840 mm | 4440 mm |
| Vehicle Height | 1640 mm | 1300 mm |
| Wheelbase Size | 3580 mm | 2360 mm |
| Fuel Tank Capacity | 100 L | 64 L |
