The Comparative Analysis :

BMW 640i Convertible xDrive Automatic (13 - 13) vs. Rolls-Royce Ghost Dawn 6.6 V12 Automatic (16 - 18)

€ 87,300
BMW 640i Convertible xDrive Automatic (13 - 13) BMW 640i Cabrio
€ 333,200
 Rolls-Royce Ghost Dawn 6.6 V12 Automatic (16 - 18) Rolls-Royce Ghost 6.6 V12
€ 87,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 333,200

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The BMW 640i Cabrio is significantly smaller in every dimension. It's 15.4 inches shorter, 2.1 inches narrower and 5.4 inches lower than the Rolls-Royce Ghost 6.6 V12.
BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
53.7
Blueprint BMW 640i Convertible xDrive Automatic (13 - 13)
74.6
81.9
59.1
Blueprint Rolls-Royce Ghost Dawn 6.6 V12 Automatic (16 - 18)
76.7
84.5
74.6 in
Width
76.7 in
81.9 in
Width Incl. Mirrors
84.5 in
53.7 in
Height
59.1 in
Blueprint BMW 640i Convertible xDrive Automatic (13 - 13)
112.4
192.7
Blueprint Rolls-Royce Ghost Dawn 6.6 V12 Automatic (16 - 18)
122.5
208.1
192.7 in
Length
208.1 in
112.4 in
Wheelbase
122.5 in

Vehicle Weight

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
4376 lb
Curb Weight
5644 lb
5291 lb
Gross Vehicle
Weight
6195 lb
BMW 640i Convertible xDrive Automatic (13 - 13)
Weight Difference:
1268 lb
22.47 %
Rolls-Royce Ghost Dawn 6.6 V12 Automatic (16 - 18)

General

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
F12
Generation
RR6
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
Straight-six gasoline engine with tur­bo­charger
Engine Type
V12 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N55
Engine Series
N55-B30
Engine Code
4
Valves
4
6
Cylinders
12
3 L / 147 cu in
Displacement
6.6 L / 323 cu in
316 hp
at 5800 rpm
Power
562 hp
at 5600 rpm
BMW 640i Cabrio
316 hp
562 hp
Rolls-Royce Ghost 6.6 V12
332 lb‑ft
at 1300 rpm
Max. Torque
575 lb‑ft
at 1400 rpm
BMW 640i Cabrio
332 lb‑ft
575 lb‑ft
Rolls-Royce Ghost 6.6 V12

Performance

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
155 mph
Maximum Speed
155 mph
5.4 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph 62
mph

246 ft
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

223 ft
0.000 sec

Rolls-Royce Ghost 6.6 V12

▶ REPLAY
13.85 lb/hp
Weight-to-Power Ratio
10.04 lb/hp
BMW 640i Cabrio
13.85 lb/hp
10.04 lb/hp
Rolls-Royce Ghost 6.6 V12

Fuel Economy / Emissions

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
Fuel Economy
29 mpg
combined
16 mpg
BMW 640i Cabrio
29 mpg
16 mpg
Rolls-Royce Ghost 6.6 V12
21 mpg
city
11 mpg
No data
highway
24 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
21.9 gal
Kraftstoffanzeige
531 mi
Range
358 mi
BMW 640i Cabrio
531 mi
358 mi
Rolls-Royce Ghost 6.6 V12
Environmental Impact
155.3 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).
272.8 kWh
BMW 640i Cabrio
155.3 kWh
272.8 kWh
Rolls-Royce Ghost 6.6 V12
Euro 5
Emission Standard
Euro 6b (NEFZ)
309 g/mi (NEFZ)
CO2 Emissions
531 g/mi (NEFZ)

Practical Convenience

BMW 640i Cabrio
Rolls-Royce Ghost 6.6 V12
2
Doors
2
4
No. of Seats
4
915 lb
Maximum Payload
551 lb
9.9 cu ft
Trunk Volume
9.1 cu ft
No data
Cargo Volume (Seats Down)
No data