The Comparative Analysis :
BMW M6 Convertible M DKG (15 - 18) vs. BMW 840i Convertible Steptronic (19 - ..)
€ 138,800

€ 102,500

€ 138,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 102,500
ⓘ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 M6 Cabrio is 2.2 inches longer, 0.1 inches narrower and 1.1 inches taller than the 840i Cabrio.
M6 Cabrio
840i Cabrio
53.9
74.8
82.9
52.7
74.9
84.1
74.8 in
Width
74.9 in
82.9 in
Width Incl. Mirrors
84.1 in
53.9 in
Height
52.7 in
112.2
192.8
111.1
190.7
192.8 in
Length
190.7 in
112.2 in
Wheelbase
111.1 in
Vehicle Weight
M6 Cabrio
840i Cabrio
4530 lb
Curb Weight
4200 lb
5313 lb
Gross Vehicle
Weight
Weight
5159 lb

Weight Difference:
331 lb
7.31 %

General
M6 Cabrio
840i Cabrio
F12
Generation
G14
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

7-speed dual clutch transmission
Transmission
8-speed automatic transmission
Engine
M6 Cabrio
840i Cabrio
V8 gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-six gasoline engine with turbocharger
BMW S63
Engine Series
BMW B58
S63-B44
Engine Code
B58-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
335 hp
at 5000 rpm
M6 Cabrio
552 hp
335 hp
840i Cabrio
502 lb‑ft
at 1500 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
M6 Cabrio
502 lb‑ft
369 lb‑ft
840i Cabrio
Performance
M6 Cabrio
840i Cabrio
155 mph
Maximum Speed
155 mph
4.3 sec
Acceleration 0 to 62 mph
5.3 sec
62 mph
62
mph
mph
197 ft
0.000 sec

M6 Cabrio
62 mph
62
mph
mph
243 ft
0.000 sec

840i Cabrio
▶ REPLAY
8.21 lb/hp
Weight-to-Power Ratio
12.54 lb/hp
M6 Cabrio
8.21 lb/hp
12.54 lb/hp
840i Cabrio
Fuel Economy / Emissions
M6 Cabrio
840i Cabrio
Fuel Economy
23 mpg
combined
32 mpg
M6 Cabrio
23 mpg
32 mpg
840i Cabrio
17 mpg
city
26 mpg
No data
highway
No data
21.1 gal
Fuel Tank Capacity
18 gal
483 mi
Range
571 mi
M6 Cabrio
483 mi
571 mi
840i 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).
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).
140.2 kWh
M6 Cabrio
195.2 kWh
140.2 kWh
840i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
385 g/mi (NEFZ)
CO2 Emissions
311 g/mi (WLTP)
Practical Convenience
M6 Cabrio
840i Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
959 lb
9.9 cu ft
Trunk Volume
9.9 cu ft








No data
Cargo Volume (Seats Down)
No data