The Comparative Analysis :

BMW M6 Convertible M DKG (15 - 18) vs. BMW 640i Convertible xDrive Steptronic (13 - 14)

€ 138,800
BMW M6 Convertible M DKG (15 - 18) M6 Cabrio
€ 87,300
 BMW 640i Convertible xDrive Steptronic (13 - 14) 640i Cabrio
€ 138,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 87,300

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

Vehicle Dimensions

The M6 Cabrio is a bit bigger in every dimension. It's 0.2 inches longer, 0.2 inches wider and 0.1 inches taller than the 640i Cabrio.
M6 Cabrio
640i Cabrio
53.9
Blueprint BMW M6 Convertible M DKG (15 - 18)
74.8
82.9
53.7
Blueprint BMW 640i Convertible xDrive Steptronic (13 - 14)
74.6
81.9
74.8 in
Width
74.6 in
82.9 in
Width Incl. Mirrors
81.9 in
53.9 in
Height
53.7 in
Blueprint BMW M6 Convertible M DKG (15 - 18)
112.2
192.8
Blueprint BMW 640i Convertible xDrive Steptronic (13 - 14)
112.4
192.7
192.8 in
Length
192.7 in
112.2 in
Wheelbase
112.4 in

Vehicle Weight

M6 Cabrio
640i Cabrio
4530 lb
Curb Weight
4376 lb
5313 lb
Gross Vehicle
Weight
5291 lb
BMW M6 Convertible M DKG (15 - 18)
Weight Difference:
154 lb
3.4 %
BMW 640i Convertible xDrive Steptronic (13 - 14)

General

M6 Cabrio
640i Cabrio
F12
Generation
F12
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
7-speed dual clutch transmission
Transmission
8-speed automatic transmission

Engine

M6 Cabrio
640i Cabrio
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-six gasoline engine with tur­bo­charger
BMW S63
Engine Series
BMW N55
S63-B44
Engine Code
N55-B30
4
Valves
4
8
Cylinders
6
4.4 L / 215 cu in
Displacement
3 L / 147 cu in
552 hp
at 6000 rpm
Power
316 hp
at 5800 rpm
M6 Cabrio
552 hp
316 hp
640i Cabrio
502 lb‑ft
at 1500 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
M6 Cabrio
502 lb‑ft
332 lb‑ft
640i Cabrio

Performance

M6 Cabrio
640i Cabrio
155 mph
Maximum Speed
155 mph
4.3 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph 62
mph

197 ft
0.000 sec

M6 Cabrio

62 mph 62
mph

246 ft
0.000 sec

640i Cabrio

▶ REPLAY
8.21 lb/hp
Weight-to-Power Ratio
13.85 lb/hp
M6 Cabrio
8.21 lb/hp
13.85 lb/hp
640i Cabrio

Fuel Economy / Emissions

M6 Cabrio
640i Cabrio
Fuel Economy
23 mpg
combined
29 mpg
M6 Cabrio
23 mpg
29 mpg
640i Cabrio
17 mpg
city
21 mpg
No data
highway
No data
Kraftstoffanzeige
21.1 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
483 mi
Range
531 mi
M6 Cabrio
483 mi
531 mi
640i Cabrio
Environmental Impact
195.2 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).
155.3 kWh
M6 Cabrio
195.2 kWh
155.3 kWh
640i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
385 g/mi (NEFZ)
CO2 Emissions
309 g/mi (NEFZ)

Practical Convenience

M6 Cabrio
640i Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
915 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data