The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. Porsche 911 Carrera Cabriolet 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 111 cm longer, 13.5 cm wider and 29.1 cm taller than the Porsche 911 Carrera Cabriolet 4.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
1581
1987
2187
1290
1852
1978
1987 mm
Width
1852 mm
2187 mm
Width Incl. Mirrors
1978 mm
1581 mm
Height
1290 mm
3320
5609
2450
4499
5609 mm
Length
4499 mm
3320 mm
Wheelbase
2450 mm
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
2620 kg
Kerb Weight
1645 kg
3050 kg
Gross Vehicle
Weight
Weight
1990 kg
Weight Difference:
975 kg
37.21 %
General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
RR2
Generation
991
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
Permanent all-wheel drive
6-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
V12 petrol engine (naturally aspirated engine)
Engine Type
6-cylinder boxer petrol engine with two turbochargers (biturbo)
4
Valves
4
12
Cylinders
6
6749 CC
Engine Capacity
2981 CC
454 bhp
at 5350 rpm
Power
365 bhp
at 6500 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 bhp
365 bhp
Porsche 911 Carrera Cabriolet 4
720 NM
at 3500 rpm
Max. Torque
450 NM
at 1700 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
720 NM
450 NM
Porsche 911 Carrera Cabriolet 4
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
149 mph
Maximum Speed
178 mph
5.8 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph
62
mph
mph
81 m
0.000 sec
Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
63 m
0.000 sec
Porsche 911 Carrera Cabriolet 4
▶ REPLAY
5.77 kg/bhp
Weight-to-Power Ratio
4.51 kg/bhp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
5.77 kg/bhp
4.51 kg/bhp
Porsche 911 Carrera Cabriolet 4
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
Fuel Economy
18 mpg
combined
36 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
18 mpg
36 mpg
Porsche 911 Carrera Cabriolet 4
11 mpg
city
27 mpg
26 mpg
motorway
43 mpg
80 L
Fuel Tank Capacity
68 L
313 mi
Range
535 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
535 mi
Porsche 911 Carrera Cabriolet 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 Cabriolet 4
Euro 4 III
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
385 g/km (NEFZ)
CO2 Emissions
182 g/km (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
Porsche 911 Carrera Cabriolet 4
2
Doors
2
4
No. of Seats
4
430 kg
Maximum Payload
345 kg
315 L
Boot Capacity
125 L
No data
Boot Capacity (Seats Down)
No data
