The Comparative Analysis :
BMW 640i Convertible Steptronic (13 - 14) vs. BMW M6 Convertible SMG (06 - 10)
€ 83,900
€ 123,200
€ 83,900
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 640i Cabrio is 0.9 inches longer, 1.5 inches wider and 0.5 inches lower than the M6 Cabrio.
640i 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
640i Cabrio
M6 Cabrio
4222 lb
Curb Weight
4420 lb
5049 lb
Gross Vehicle
Weight
Weight
5247 lb
Weight Difference:
198 lb
4.48 %
General
640i Cabrio
M6 Cabrio
F12
Generation
E64
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed automated manual transmission (AMT)
Engine
640i Cabrio
M6 Cabrio
Straight-six gasoline engine with turbocharger
Engine Type
V10 gasoline engine (naturally aspirated engine)
BMW N55
Engine Series
BMW S85
N55-B30
Engine Code
S85-B50
4
Valves
4
6
Cylinders
10
3 L / 147 cu in
Displacement
5 L / 245 cu in
316 hp
at 5800 rpm
Power
500 hp
at 7750 rpm
640i Cabrio
316 hp
500 hp
M6 Cabrio
332 lb‑ft
at 1300 rpm
Max. Torque
384 lb‑ft
at 6100 rpm
640i Cabrio
332 lb‑ft
384 lb‑ft
M6 Cabrio
Performance
640i Cabrio
M6 Cabrio
155 mph
Maximum Speed
155 mph
5.7 sec
Acceleration 0 to 62 mph
4.8 sec
62 mph
62
mph
mph
259 ft
0.000 sec
640i Cabrio
62 mph
62
mph
mph
220 ft
0.000 sec
M6 Cabrio
▶ REPLAY
13.36 lb/hp
Weight-to-Power Ratio
8.84 lb/hp
640i Cabrio
13.36 lb/hp
8.84 lb/hp
M6 Cabrio
Fuel Economy / Emissions
640i Cabrio
M6 Cabrio
Fuel Economy
30 mpg
combined
16 mpg
640i Cabrio
30 mpg
16 mpg
M6 Cabrio
22 mpg
city
11 mpg
No data
highway
No data
18.5 gal
Fuel Tank Capacity
18.5 gal
557 mi
Range
296 mi
640i Cabrio
557 mi
296 mi
M6 Cabrio
Environmental Impact
147.7 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
640i Cabrio
147.7 kWh
278.4 kWh
M6 Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 4
291 g/mi (NEFZ)
CO2 Emissions
566 g/mi (NEFZ)
Practical Convenience
640i Cabrio
M6 Cabrio
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
827 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data
