The Comparative Analysis :
Rolls-Royce Phantom Drophead Coupé 6.8 V12 Automatic (10 - 17) vs. BMW 640i Convertible xDrive Automatic (13 - 13)
€ 465,600

€ 87,300

€ 465,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 87,300
ⓘ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 28.3 inches longer, 3.7 inches wider and 7.9 inches taller than the BMW 640i Cabrio.
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
61.7
78.2
86.1
53.7
74.6
81.9
78.2 in
Width
74.6 in
86.1 in
Width Incl. Mirrors
81.9 in
61.7 in
Height
53.7 in
130.7
220.9
112.4
192.7
220.9 in
Length
192.7 in
130.7 in
Wheelbase
112.4 in
Vehicle Weight
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
5776 lb
Curb Weight
4376 lb
6724 lb
Gross Vehicle
Weight
Weight
5291 lb

Weight Difference:
1400 lb
24.24 %

General
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
RR2
Generation
F12
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
8-speed automatic transmission
Engine
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
V12 gasoline engine (naturally aspirated engine)
Engine Type
Straight-six gasoline engine with turbocharger
Engine Series
BMW N55
Engine Code
N55-B30

4
Valves
4
12
Cylinders
6
6.7 L / 328 cu in
Displacement
3 L / 147 cu in
454 hp
at 5350 rpm
Power
316 hp
at 5800 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
454 hp
316 hp
BMW 640i Cabrio
531 lb‑ft
at 3500 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
Rolls-Royce Phantom Drophead Coupé 6.8 V12
531 lb‑ft
332 lb‑ft
BMW 640i Cabrio
Performance
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
149 mph
Maximum Speed
155 mph
5.8 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
266 ft
0.000 sec

Rolls-Royce Phantom Drophead Coupé 6.8 V12
62 mph
62
mph
mph
246 ft
0.000 sec

BMW 640i Cabrio
▶ REPLAY
12.72 lb/hp
Weight-to-Power Ratio
13.85 lb/hp
Rolls-Royce Phantom Drophead Coupé 6.8 V12
12.72 lb/hp
13.85 lb/hp
BMW 640i Cabrio
Fuel Economy / Emissions
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
Fuel Economy
16 mpg
combined
29 mpg
Rolls-Royce Phantom Drophead Coupé 6.8 V12
16 mpg
29 mpg
BMW 640i Cabrio
10 mpg
city
21 mpg
23 mpg
highway
No data
21.1 gal
Fuel Tank Capacity
18.5 gal
336 mi
Range
531 mi
Rolls-Royce Phantom Drophead Coupé 6.8 V12
336 mi
531 mi
BMW 640i Cabrio
Environmental Impact
280.3 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).
155.3 kWh
Rolls-Royce Phantom Drophead Coupé 6.8 V12
280.3 kWh
155.3 kWh
BMW 640i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 5
558 g/mi (NEFZ)
CO2 Emissions
309 g/mi (NEFZ)
Practical Convenience
Rolls-Royce Phantom Drophead Coupé 6.8 V12
BMW 640i Cabrio
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
915 lb
8.9 cu ft
Trunk Volume
9.9 cu ft







No data
Cargo Volume (Seats Down)
No data