The Comparative Analysis :
BMW 840d Cabrio xDrive Steptronic (19 - ..) vs. BMW 640i Cabrio Steptronic (13 - 14)
€ 108,000

€ 83,900

€ 108,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 83,900
ⓘ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 840d Cabrio is 5.1 cm shorter, 0.8 cm wider and 2.6 cm lower than the 640i Cabrio.
840d Cabrio
640i Cabrio
1339
1902
2137
1365
1894
2081
1902 mm
Width
1894 mm
2137 mm
Width Incl. Mirrors
2081 mm
1339 mm
Height
1365 mm
2822
4843
2855
4894
4843 mm
Length
4894 mm
2822 mm
Wheelbase
2855 mm
Vehicle Weight
840d Cabrio
640i Cabrio
2030 kg
Kerb Weight
1915 kg
2485 kg
Gross Vehicle
Weight
Weight
2290 kg

Weight Difference:
115 kg
5.67 %

General
840d Cabrio
640i Cabrio
G14
Generation
F12
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Super Unleaded (98 RON)

Permanent all-wheel drive
Drive
Rear-wheel drive

8-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
840d Cabrio
640i Cabrio
Straight-six diesel engine with two turbochargers (biturbo)
Engine Type
Straight-six petrol engine with turbocharger
BMW B57
Engine Series
BMW N55
B57-D30
Engine Code
N55-B30

4
Valves
4
6
Cylinders
6
2993 CC
Engine Capacity
2979 CC
316 bhp
at 4400 rpm
Power
316 bhp
at 5800 rpm
840d Cabrio
316 bhp
316 bhp
640i Cabrio
680 NM
at 1750 rpm
Max. Torque
450 NM
at 1300 rpm
840d Cabrio
680 NM
450 NM
640i Cabrio
Performance
840d Cabrio
640i Cabrio
155 mph
Maximum Speed
155 mph
5.2 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph
62
mph
mph
72 m
0.000 sec

840d Cabrio
62 mph
62
mph
mph
79 m
0.000 sec

640i Cabrio
▶ REPLAY
6.42 kg/bhp
Weight-to-Power Ratio
6.06 kg/bhp
840d Cabrio
6.42 kg/bhp
6.06 kg/bhp
640i Cabrio
Fuel Economy / Emissions
840d Cabrio
640i Cabrio
Fuel Economy
46 mpg
combined
36 mpg
840d Cabrio
46 mpg
36 mpg
640i Cabrio
38 mpg
city
26 mpg
No data
motorway
No data
66 L
Fuel Tank Capacity
70 L
662 mi
Range
557 mi
840d Cabrio
662 mi
557 mi
640i Cabrio
Environmental Impact
127.6 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).
147.7 kWh
840d Cabrio
127.6 kWh
147.7 kWh
640i Cabrio
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6b (NEFZ)
184 g/km (WLTP)
CO2 Emissions
181 g/km (NEFZ)
Practical Convenience
840d Cabrio
640i Cabrio
2
Doors
2
4
No. of Seats
4
455 kg
Maximum Payload
375 kg
350 L
Boot Capacity
350 L








No data
Boot Capacity (Seats Down)
No data