The Comparative Analysis :
BMW 640d Convertible xDrive Steptronic (12 - 14) vs. BMW M6 Convertible M DKG (12 - 14)
€ 90,800
€ 131,400
€ 90,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 131,400
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The 640d Cabrio is a bit smaller in every dimension. It's 0.2 inches shorter, 0.2 inches narrower and 0.3 inches lower than the M6 Cabrio.
640d Cabrio
M6 Cabrio
53.7
74.6
81.9
54
74.8
82.9
74.6 in
Width
74.8 in
81.9 in
Width Incl. Mirrors
82.9 in
53.7 in
Height
54 in
112.4
192.7
112.2
192.8
192.7 in
Length
192.8 in
112.4 in
Wheelbase
112.2 in
Vehicle Weight
640d Cabrio
M6 Cabrio
4420 lb
Curb Weight
4530 lb
5379 lb
Gross Vehicle
Weight
Weight
5313 lb
Weight Difference:
110 lb
2.43 %
General
640d Cabrio
M6 Cabrio
F12
Generation
F12
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
640d Cabrio
M6 Cabrio
Straight-six diesel engine with two turbochargers (biturbo)
Engine Type
V8 gasoline engine with two turbochargers (biturbo)
BMW N57
Engine Series
BMW S63
N57-D30
Engine Code
S63-B44
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4.4 L / 215 cu in
309 hp
at 4400 rpm
Power
552 hp
at 6000 rpm
640d Cabrio
309 hp
552 hp
M6 Cabrio
465 lb‑ft
at 1500 rpm
Max. Torque
502 lb‑ft
at 1500 rpm
640d Cabrio
465 lb‑ft
502 lb‑ft
M6 Cabrio
Performance
640d Cabrio
M6 Cabrio
155 mph
Maximum Speed
155 mph
5.4 sec
Acceleration 0 to 62 mph
4.3 sec
62 mph
62
mph
mph
246 ft
0.000 sec
640d Cabrio
62 mph
62
mph
mph
197 ft
0.000 sec
M6 Cabrio
▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
8.21 lb/hp
640d Cabrio
14.3 lb/hp
8.21 lb/hp
M6 Cabrio
Fuel Economy / Emissions
640d Cabrio
M6 Cabrio
Fuel Economy
40 mpg
combined
23 mpg
640d Cabrio
40 mpg
23 mpg
M6 Cabrio
33 mpg
city
16 mpg
No data
highway
No data
18.5 gal
Fuel Tank Capacity
21.1 gal
737 mi
Range
483 mi
640d Cabrio
737 mi
483 mi
M6 Cabrio
Environmental Impact
121.3 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).
195.2 kWh
640d Cabrio
121.3 kWh
195.2 kWh
M6 Cabrio
Euro 5
Emission Standard
Euro 5
248 g/mi (NEFZ)
CO2 Emissions
385 g/mi (NEFZ)
Practical Convenience
640d Cabrio
M6 Cabrio
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
783 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data
