The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. Porsche 911 Carrera Convertible 4 PDK (16 - 18)
€ 450,700
€ 121,900
€ 450,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 121,900
ⓘ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 43.7 inches longer, 5.3 inches wider and 11.5 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
50.8
72.9
77.9
78.2 in
Width
72.9 in
86.1 in
Width Incl. Mirrors
77.9 in
62.2 in
Height
50.8 in
130.7
220.8
96.5
177.1
220.8 in
Length
177.1 in
130.7 in
Wheelbase
96.5 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
5776 lb
Curb Weight
3627 lb
6724 lb
Gross Vehicle
Weight
Weight
4387 lb
Weight Difference:
2150 lb
37.22 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Convertible 4
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
V12 gasoline engine (naturally aspirated engine)
Engine Type
6-cylinder boxer gasoline engine with two turbochargers (biturbo)
4
Valves
4
12
Cylinders
6
6.7 L / 328 cu in
Displacement
3 L / 147 cu in
454 hp
at 5350 rpm
Power
365 hp
at 6500 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 hp
365 hp
Porsche 911 Carrera Convertible 4
531 lb‑ft
at 3500 rpm
Max. Torque
332 lb‑ft
at 1700 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
531 lb‑ft
332 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
178 mph
5.8 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph
62
mph
mph
266 ft
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
207 ft
0.000 sec
Porsche 911 Carrera Convertible 4
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
9.94 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
9.94 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
30 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
15 mpg
30 mpg
Porsche 911 Carrera Convertible 4
10 mpg
city
23 mpg
21 mpg
highway
36 mpg
21.1 gal
Fuel Tank Capacity
18 gal
313 mi
Range
535 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
535 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).
149.7 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
301.3 kWh
149.7 kWh
Porsche 911 Carrera Convertible 4
Euro 4 III
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
620 g/mi (NEFZ)
CO2 Emissions
293 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
761 lb
8.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data
