The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (07 - 10) vs. BMW 640d Cabrio Steptronic (15 - 18)
€ 450,700

€ 95,900

€ 450,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 95,900
ⓘ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 71.5 cm longer, 9.3 cm wider and 21.6 cm taller than the BMW 640d Cabrio.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
1581
1987
2187
1365
1894
2081
1987 mm
Width
1894 mm
2187 mm
Width Incl. Mirrors
2081 mm
1581 mm
Height
1365 mm
3320
5609
2855
4894
5609 mm
Length
4894 mm
3320 mm
Wheelbase
2855 mm
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
2620 kg
Kerb Weight
1935 kg
3050 kg
Gross Vehicle
Weight
Weight
2365 kg

Weight Difference:
685 kg
26.15 %

General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
RR2
Generation
F12
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Diesel

Rear-wheel drive
Drive
Rear-wheel drive

6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
V12 petrol engine (naturally aspirated engine)
Engine Type
Straight-six diesel engine with two turbochargers (biturbo)
Engine Series
BMW N57
Engine Code
N57-D30

4
Valves
4
12
Cylinders
6
6749 CC
Engine Capacity
2993 CC
454 bhp
at 5350 rpm
Power
309 bhp
at 4400 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 bhp
309 bhp
BMW 640d Cabrio
720 NM
at 3500 rpm
Max. Torque
630 NM
at 1500 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
720 NM
630 NM
BMW 640d Cabrio
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
149 mph
Maximum Speed
155 mph
5.8 sec
Acceleration 0 to 62 mph
5.5 sec
62 mph
62
mph
mph
81 m
0.000 sec

Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
76 m
0.000 sec

BMW 640d Cabrio
▶ REPLAY
5.77 kg/bhp
Weight-to-Power Ratio
6.26 kg/bhp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
5.77 kg/bhp
6.26 kg/bhp
BMW 640d Cabrio
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
Fuel Economy
18 mpg
combined
50 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
18 mpg
50 mpg
BMW 640d Cabrio
11 mpg
city
43 mpg
26 mpg
motorway
No data
80 L
Fuel Tank Capacity
70 L
313 mi
Range
777 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
313 mi
777 mi
BMW 640d Cabrio
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).
115.2 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
301.3 kWh
115.2 kWh
BMW 640d Cabrio
Euro 4 III
Emission Standard
Euro 6b (NEFZ)
385 g/km (NEFZ)
CO2 Emissions
149 g/km (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640d Cabrio
2
Doors
2
4
No. of Seats
4
430 kg
Maximum Payload
430 kg
315 L
Boot Capacity
350 L







No data
Boot Capacity (Seats Down)
No data