The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15)
€ 450,700
€ 141,600
€ 450,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 141,600
ⓘ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 43.3 inches longer, 5.3 inches wider and 11.3 inches taller than the Porsche 911 Carrera Convertible 4 GTS.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
62.2
78.2
86.1
50.9
72.9
77.9
78.2 in
Width
72.9 in
86.1 in
Width Incl. Mirrors
77.9 in
62.2 in
Height
50.9 in
130.7
220.8
96.5
177.5
220.8 in
Length
177.5 in
130.7 in
Wheelbase
96.5 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
5776 lb
Curb Weight
3605 lb
6724 lb
Gross Vehicle
Weight
Weight
4310 lb
Weight Difference:
2172 lb
37.6 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
RR2
Generation
991
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
6-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
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 4 GTS
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 4 GTS
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
149 mph
Maximum Speed
187 mph
5.8 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph
62
mph
mph
266 ft
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
190 ft
0.000 sec
Porsche 911 Carrera Convertible 4 GTS
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
8.5 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
8.5 lb/hp
Porsche 911 Carrera Convertible 4 GTS
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
Fuel Economy
15 mpg
combined
26 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
15 mpg
26 mpg
Porsche 911 Carrera Convertible 4 GTS
10 mpg
city
19 mpg
21 mpg
highway
33 mpg
21.1 gal
Fuel Tank Capacity
18 gal
313 mi
Range
459 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
459 mi
Porsche 911 Carrera Convertible 4 GTS
Environmental Impact
301.3 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).
174.3 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
301.3 kWh
174.3 kWh
Porsche 911 Carrera Convertible 4 GTS
Euro 4 III
Emission Standard
Euro 6b (NEFZ)
620 g/mi (NEFZ)
CO2 Emissions
344 g/mi (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4 GTS
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
705 lb
8.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data
