The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (10 - 17) vs. Porsche 911 Carrera Convertible S (12 - 15)
€ 465,600
€ 131,700
€ 465,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 131,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Rolls-Royce Phantom Drophead Coupé 6.8 V12 is substantially bigger in every dimension. It's 44.1 inches longer, 7 inches wider and 10.8 inches taller than the Porsche 911 Carrera Convertible S.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
61.7
78.2
86.1
50.9
71.2
77.9
78.2 in
Width
71.2 in
86.1 in
Width Incl. Mirrors
77.9 in
61.7 in
Height
50.9 in
130.7
220.9
96.5
176.8
220.9 in
Length
176.8 in
130.7 in
Wheelbase
96.5 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
5776 lb
Curb Weight
3395 lb
6724 lb
Gross Vehicle
Weight
Weight
4156 lb
Weight Difference:
2381 lb
41.22 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
RR2
Generation
991
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed automatic transmission
Transmission
7-speed manual transmission
Engine
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
V12 gasoline engine (naturally aspirated engine)
Engine Type
6-cylinder boxer gasoline engine (naturally aspirated engine)
4
Valves
4
12
Cylinders
6
6.7 L / 328 cu in
Displacement
3.8 L / 186 cu in
454 hp
at 5350 rpm
Power
424 hp
at 7500 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 hp
424 hp
Porsche 911 Carrera Convertible S
531 lb‑ft
at 3500 rpm
Max. Torque
325 lb‑ft
at 5750 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
531 lb‑ft
325 lb‑ft
Porsche 911 Carrera Convertible S
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
149 mph
Maximum Speed
190 mph
5.8 sec
Acceleration 0 to 62 mph
4.6 sec
62 mph
62
mph
mph
266 ft
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
210 ft
0.000 sec
Porsche 911 Carrera Convertible S
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
8.01 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
8.01 lb/hp
Porsche 911 Carrera Convertible S
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
Fuel Economy
16 mpg
combined
24 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
16 mpg
24 mpg
Porsche 911 Carrera Convertible S
10 mpg
city
17 mpg
23 mpg
highway
31 mpg
21.1 gal
Fuel Tank Capacity
16.9 gal
336 mi
Range
410 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
336 mi
410 mi
Porsche 911 Carrera Convertible S
Environmental Impact
280.3 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
183.8 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
280.3 kWh
183.8 kWh
Porsche 911 Carrera Convertible S
Euro 6b (NEFZ)
Emission Standard
Euro 5 / Euro 6
558 g/mi (NEFZ)
CO2 Emissions
369 g/mi (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible S
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
761 lb
8.9 cu ft
Trunk Volume
4.1 cu ft
No data
Cargo Volume (Seats Down)
No data
