The Comparative Analysis :
BMW 650i Convertible xDrive Automatic (11 - 12) vs. BMW M6 Convertible SMG (06 - 10)
€ 97,700

€ 123,200

€ 97,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 123,200
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ a little. The 650i Cabrio is 0.9 inches longer, 1.5 inches wider and 0.5 inches lower than the M6 Cabrio.
650i Cabrio
M6 Cabrio
53.7
74.6
81.9
54.2
73
80.2
74.6 in
Width
73 in
81.9 in
Width Incl. Mirrors
80.2 in
53.7 in
Height
54.2 in
112.4
192.7
109.5
191.8
192.7 in
Length
191.8 in
112.4 in
Wheelbase
109.5 in
Vehicle Weight
650i Cabrio
M6 Cabrio
4530 lb
Curb Weight
4420 lb
5434 lb
Gross Vehicle
Weight
Weight
5247 lb

Weight Difference:
110 lb
2.43 %

General
650i Cabrio
M6 Cabrio
F12
Generation
E64
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
7-speed automated manual transmission (AMT)
Engine
650i Cabrio
M6 Cabrio
V8 gasoline engine with two turbochargers (biturbo)
Engine Type
V10 gasoline engine (naturally aspirated engine)
BMW N63
Engine Series
BMW S85
N63-B44
Engine Code
S85-B50
4
Valves
4
8
Cylinders
10
4.4 L / 215 cu in
Displacement
5 L / 245 cu in
402 hp
at 5500 rpm
Power
500 hp
at 7750 rpm
650i Cabrio
402 hp
500 hp
M6 Cabrio
443 lb‑ft
at 1750 rpm
Max. Torque
384 lb‑ft
at 6100 rpm
650i Cabrio
443 lb‑ft
384 lb‑ft
M6 Cabrio
Performance
650i Cabrio
M6 Cabrio
155 mph
Maximum Speed
155 mph
4.9 sec
Acceleration 0 to 62 mph
4.8 sec
62 mph
62
mph
mph
223 ft
0.000 sec

650i Cabrio
62 mph
62
mph
mph
220 ft
0.000 sec

M6 Cabrio
▶ REPLAY
11.27 lb/hp
Weight-to-Power Ratio
8.84 lb/hp
650i Cabrio
11.27 lb/hp
8.84 lb/hp
M6 Cabrio
Fuel Economy / Emissions
650i Cabrio
M6 Cabrio
Fuel Economy
21 mpg
combined
16 mpg
650i Cabrio
21 mpg
16 mpg
M6 Cabrio
14 mpg
city
11 mpg
No data
highway
No data
18.5 gal
Fuel Tank Capacity
18.5 gal
382 mi
Range
296 mi
650i Cabrio
382 mi
296 mi
M6 Cabrio
Environmental Impact
216 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
650i Cabrio
216 kWh
278.4 kWh
M6 Cabrio
Euro 5
Emission Standard
Euro 4
428 g/mi (NEFZ)
CO2 Emissions
566 g/mi (NEFZ)
Practical Convenience
650i Cabrio
M6 Cabrio
2
Doors
2
4
No. of Seats
4
904 lb
Maximum Payload
827 lb
9.9 cu ft
Trunk Volume
9.9 cu ft








No data
Cargo Volume (Seats Down)
No data