The Comparative Analysis :

BMW 640i Convertible Steptronic (13 - 14) vs. BMW M850i Convertible xDrive Steptronic Sport (19 - ..)

€ 83,900
BMW 640i Convertible Steptronic (13 - 14) 640i Cabrio
€ 133,700
 BMW M850i Convertible xDrive Steptronic Sport (19 - ..) M850i Cabrio
€ 83,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 133,700

ⓘ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 1.7 inches longer, 0.3 inches narrower and 0.8 inches taller than the M850i Cabrio.
640i Cabrio
M850i Cabrio
53.7
Blueprint BMW 640i Convertible Steptronic (13 - 14)
74.6
81.9
53
Blueprint BMW M850i Convertible xDrive Steptronic Sport (19 - ..)
74.9
84.1
74.6 in
Width
74.9 in
81.9 in
Width Incl. Mirrors
84.1 in
53.7 in
Height
53 in
Blueprint BMW 640i Convertible Steptronic (13 - 14)
112.4
192.7
Blueprint BMW M850i Convertible xDrive Steptronic Sport (19 - ..)
111.1
191
192.7 in
Length
191 in
112.4 in
Wheelbase
111.1 in

Vehicle Weight

640i Cabrio
M850i Cabrio
4222 lb
Curb Weight
4608 lb
5049 lb
Gross Vehicle
Weight
5545 lb
BMW 640i Convertible Steptronic (13 - 14)
Weight Difference:
386 lb
8.38 %
BMW M850i Convertible xDrive Steptronic Sport (19 - ..)

General

640i Cabrio
M850i Cabrio
F12
Generation
G14
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

640i Cabrio
M850i Cabrio
Straight-six gasoline engine with tur­bo­charger
Engine Type
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N55
Engine Series
BMW N63
N55-B30
Engine Code
N63-B44
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4.4 L / 215 cu in
316 hp
at 5800 rpm
Power
523 hp
at 5500 rpm
640i Cabrio
316 hp
523 hp
M850i Cabrio
332 lb‑ft
at 1300 rpm
Max. Torque
553 lb‑ft
at 1800 rpm
640i Cabrio
332 lb‑ft
553 lb‑ft
M850i Cabrio

Performance

640i Cabrio
M850i Cabrio
155 mph
Maximum Speed
155 mph
5.7 sec
Acceleration 0 to 62 mph
3.9 sec
62 mph 62
mph

259 ft
0.000 sec

640i Cabrio

62 mph 62
mph

177 ft
0.000 sec

M850i Cabrio

▶ REPLAY
13.36 lb/hp
Weight-to-Power Ratio
8.81 lb/hp
640i Cabrio
13.36 lb/hp
8.81 lb/hp
M850i Cabrio

Fuel Economy / Emissions

640i Cabrio
M850i Cabrio
Fuel Economy
30 mpg
combined
23 mpg
640i Cabrio
30 mpg
23 mpg
M850i Cabrio
22 mpg
city
No data
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
557 mi
Range
414 mi
640i Cabrio
557 mi
414 mi
M850i 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).
193.3 kWh
640i Cabrio
147.7 kWh
193.3 kWh
M850i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
291 g/mi (NEFZ)
CO2 Emissions
420 g/mi (WLTP)

Practical Convenience

640i Cabrio
M850i Cabrio
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
937 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data