The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. Porsche 911 Turbo Convertible PDK (09 - 13)
€ 450,700
€ 165,600
€ 450,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 165,600
ⓘ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 45.6 inches longer, 5.3 inches wider and 11.1 inches taller than the Porsche 911 Turbo Convertible.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
62.2
78.2
86.1
51.2
72.9
80.8
78.2 in
Width
72.9 in
86.1 in
Width Incl. Mirrors
80.8 in
62.2 in
Height
51.2 in
130.7
220.8
92.5
175.2
220.8 in
Length
175.2 in
130.7 in
Wheelbase
92.5 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
5776 lb
Curb Weight
3847 lb
6724 lb
Gross Vehicle
Weight
Weight
4453 lb
Weight Difference:
1929 lb
33.4 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
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 Turbo Convertible
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
3.8 L / 186 cu in
454 hp
at 5350 rpm
Power
493 hp
at 6000 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 hp
493 hp
Porsche 911 Turbo Convertible
531 lb‑ft
at 3500 rpm
Max. Torque
479 lb‑ft
at 1950 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
531 lb‑ft
479 lb‑ft
Porsche 911 Turbo Convertible
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
149 mph
Maximum Speed
194 mph
5.8 sec
Acceleration 0 to 62 mph
3.7 sec
62 mph
62
mph
mph
266 ft
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
167 ft
0.000 sec
Porsche 911 Turbo Convertible
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
7.8 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
7.8 lb/hp
Porsche 911 Turbo Convertible
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
Fuel Economy
15 mpg
combined
20 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
15 mpg
20 mpg
Porsche 911 Turbo Convertible
10 mpg
city
14 mpg
21 mpg
highway
29 mpg
21.1 gal
Fuel Tank Capacity
17.7 gal
313 mi
Range
362 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
362 mi
Porsche 911 Turbo Convertible
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).
217.9 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
301.3 kWh
217.9 kWh
Porsche 911 Turbo Convertible
Euro 4 III
Emission Standard
Euro 5
620 g/mi (NEFZ)
CO2 Emissions
435 g/mi (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Turbo Convertible
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
606 lb
8.9 cu ft
Trunk Volume
3 cu ft
No data
Cargo Volume (Seats Down)
No data
