The Comparative Analysis :

BMW 640d Convertible Steptronic (15 - 18) vs. BMW 840i Convertible xDrive Steptronic (19 - ..)

€ 95,900
BMW 640d Convertible Steptronic (15 - 18) 640d Cabrio
€ 105,800
 BMW 840i Convertible xDrive Steptronic (19 - ..) 840i Cabrio
€ 95,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 105,800

ⓘ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 640d Cabrio is 2 inches longer, 0.3 inches narrower and an inch taller than the 840i Cabrio.
640d Cabrio
840i Cabrio
53.7
Blueprint BMW 640d Convertible Steptronic (15 - 18)
74.6
81.9
52.7
Blueprint BMW 840i Convertible xDrive Steptronic (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
52.7 in
Blueprint BMW 640d Convertible Steptronic (15 - 18)
112.4
192.7
Blueprint BMW 840i Convertible xDrive Steptronic (19 - ..)
111.1
190.7
192.7 in
Length
190.7 in
112.4 in
Wheelbase
111.1 in

Vehicle Weight

640d Cabrio
840i Cabrio
4266 lb
Curb Weight
4310 lb
5214 lb
Gross Vehicle
Weight
5291 lb
BMW 640d Convertible Steptronic (15 - 18)
Weight Difference:
44 lb
1.02 %
BMW 840i Convertible xDrive Steptronic (19 - ..)

General

640d Cabrio
840i Cabrio
F12
Generation
G14
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

640d Cabrio
840i Cabrio
Straight-six diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-six gasoline engine with tur­bo­charger
BMW N57
Engine Series
BMW B58
N57-D30
Engine Code
B58-B30
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
309 hp
at 4400 rpm
Power
335 hp
at 5000 rpm
640d Cabrio
309 hp
335 hp
840i Cabrio
465 lb‑ft
at 1500 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
640d Cabrio
465 lb‑ft
369 lb‑ft
840i Cabrio

Performance

640d Cabrio
840i Cabrio
155 mph
Maximum Speed
155 mph
5.5 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph 62
mph

249 ft
0.000 sec

640d Cabrio

62 mph 62
mph

223 ft
0.000 sec

840i Cabrio

▶ REPLAY
13.81 lb/hp
Weight-to-Power Ratio
12.87 lb/hp
640d Cabrio
13.81 lb/hp
12.87 lb/hp
840i Cabrio

Fuel Economy / Emissions

640d Cabrio
840i Cabrio
Fuel Economy
42 mpg
combined
31 mpg
640d Cabrio
42 mpg
31 mpg
840i Cabrio
36 mpg
city
24 mpg
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
777 mi
Range
549 mi
640d Cabrio
777 mi
549 mi
840i Cabrio
Environmental Impact
115.2 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).
145.8 kWh
640d Cabrio
115.2 kWh
145.8 kWh
840i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
240 g/mi (NEFZ)
CO2 Emissions
330 g/mi (WLTP)

Practical Convenience

640d Cabrio
840i Cabrio
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
981 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data