The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. Porsche 911 Carrera Convertible 4 PDK (08 - 12)
€ 450,700
€ 107,100
€ 450,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 107,100
ⓘ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 46.2 inches longer, 5.3 inches wider and 10.7 inches taller than the Porsche 911 Carrera Convertible 4.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
62.2
78.2
86.1
51.6
72.9
80.8
78.2 in
Width
72.9 in
86.1 in
Width Incl. Mirrors
80.8 in
62.2 in
Height
51.6 in
130.7
220.8
92.5
174.6
220.8 in
Length
174.6 in
130.7 in
Wheelbase
92.5 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
5776 lb
Curb Weight
3660 lb
6724 lb
Gross Vehicle
Weight
Weight
4321 lb
Weight Difference:
2116 lb
36.63 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
RR2
Generation
997
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
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
3.6 L / 176 cu in
454 hp
at 5350 rpm
Power
340 hp
at 6500 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 hp
340 hp
Porsche 911 Carrera Convertible 4
531 lb‑ft
at 3500 rpm
Max. Torque
288 lb‑ft
at 4400 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
531 lb‑ft
288 lb‑ft
Porsche 911 Carrera Convertible 4
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
149 mph
Maximum Speed
175 mph
5.8 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
266 ft
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
226 ft
0.000 sec
Porsche 911 Carrera Convertible 4
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
10.76 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
10.76 lb/hp
Porsche 911 Carrera Convertible 4
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
Fuel Economy
15 mpg
combined
23 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
15 mpg
23 mpg
Porsche 911 Carrera Convertible 4
10 mpg
city
15 mpg
21 mpg
highway
33 mpg
21.1 gal
Fuel Tank Capacity
17.7 gal
313 mi
Range
404 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
404 mi
Porsche 911 Carrera Convertible 4
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).
195.2 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
301.3 kWh
195.2 kWh
Porsche 911 Carrera Convertible 4
Euro 4 III
Emission Standard
Euro 5
620 g/mi (NEFZ)
CO2 Emissions
389 g/mi (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
661 lb
8.9 cu ft
Trunk Volume
3 cu ft
No data
Cargo Volume (Seats Down)
No data
