The Comparative Analysis :
BMW M8 Competition Convertible xDrive Steptronic Sport (19 - ..) vs. Rolls-Royce Ghost Dawn 6.6 V12 Black Badge Automatic (17 - ..)
€ 176,000

€ 381,900

€ 176,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 381,900
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW M8 Competition Cabrio is significantly smaller in every dimension. It's 16.5 inches shorter, 1.6 inches narrower and 5.9 inches lower than the Rolls-Royce Ghost 6.6 V12.
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
53.3
75.1
84.1
59.1
76.7
84.5
75.1 in
Width
76.7 in
84.1 in
Width Incl. Mirrors
84.5 in
53.3 in
Height
59.1 in
111.3
191.6
122.5
208.1
191.6 in
Length
208.1 in
111.3 in
Wheelbase
122.5 in
Vehicle Weight
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
4597 lb
Curb Weight
5644 lb
5379 lb
Gross Vehicle
Weight
Weight
6195 lb

Weight Difference:
1047 lb
18.55 %

General
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
G14
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 M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
V8 gasoline engine with two turbochargers (biturbo)
Engine Type
V12 gasoline engine with two turbochargers (biturbo)
BMW S63
Engine Series
S63-B44
Engine Code
4
Valves
4
8
Cylinders
12
4.4 L / 215 cu in
Displacement
6.6 L / 323 cu in
616 hp
at 6000 rpm
Power
593 hp
at 5250 rpm
BMW M8 Competition Cabrio
616 hp
593 hp
Rolls-Royce Ghost 6.6 V12
553 lb‑ft
at 1800 rpm
Max. Torque
620 lb‑ft
at 1650 rpm
BMW M8 Competition Cabrio
553 lb‑ft
620 lb‑ft
Rolls-Royce Ghost 6.6 V12
Performance
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
155 mph
Maximum Speed
155 mph
3.3 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
151 ft
0.000 sec

BMW M8 Competition Cabrio
62 mph
62
mph
mph
223 ft
0.000 sec

Rolls-Royce Ghost 6.6 V12
▶ REPLAY
7.46 lb/hp
Weight-to-Power Ratio
9.52 lb/hp
BMW M8 Competition Cabrio
7.46 lb/hp
9.52 lb/hp
Rolls-Royce Ghost 6.6 V12
Fuel Economy / Emissions
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
Fuel Economy
22 mpg
combined
16 mpg
BMW M8 Competition Cabrio
22 mpg
16 mpg
Rolls-Royce Ghost 6.6 V12
No data
city
10 mpg
No data
highway
23 mpg
18 gal
Fuel Tank Capacity
21.9 gal
391 mi
Range
351 mi
BMW M8 Competition Cabrio
391 mi
351 mi
Rolls-Royce Ghost 6.6 V12
Environmental Impact
204.5 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).
278.4 kWh
BMW M8 Competition Cabrio
204.5 kWh
278.4 kWh
Rolls-Royce Ghost 6.6 V12
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6
410 g/mi (WLTP)
CO2 Emissions
542 g/mi (NEFZ)
Practical Convenience
BMW M8 Competition Cabrio
Rolls-Royce Ghost 6.6 V12
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
551 lb
9.9 cu ft
Trunk Volume
9.1 cu ft







No data
Cargo Volume (Seats Down)
No data