The Comparative Analysis :
BMW 640d Convertible xDrive Steptronic (12 - 14) vs. BMW 640i Convertible Steptronic (13 - 14)
€ 90,800

€ 83,900

€ 90,800
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 the 640d Cabrio and the 640i Cabrio are absolutely identical. Both are 192.7 inches long, 74.6 inches wide and 53.7 inches tall.
640d Cabrio
640i Cabrio
53.7
74.6
81.9
53.7
74.6
81.9
74.6 in
Width
74.6 in
81.9 in
Width Incl. Mirrors
81.9 in
53.7 in
Height
53.7 in
112.4
192.7
112.4
192.7
192.7 in
Length
192.7 in
112.4 in
Wheelbase
112.4 in
Vehicle Weight
640d Cabrio
640i Cabrio
4420 lb
Curb Weight
4222 lb
5379 lb
Gross Vehicle
Weight
Weight
5049 lb

Weight Difference:
198 lb
4.48 %

General
640d Cabrio
640i Cabrio
F12
Generation
F12
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded

Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive

8-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
640d Cabrio
640i Cabrio
Straight-six diesel engine with two turbochargers (biturbo)
Engine Type
Straight-six gasoline engine with turbocharger
BMW N57
Engine Series
BMW N55
N57-D30
Engine Code
N55-B30


4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
309 hp
at 4400 rpm
Power
316 hp
at 5800 rpm
640d Cabrio
309 hp
316 hp
640i Cabrio
465 lb‑ft
at 1500 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
640d Cabrio
465 lb‑ft
332 lb‑ft
640i Cabrio
Performance
640d Cabrio
640i Cabrio
155 mph
Maximum Speed
155 mph
5.4 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph
62
mph
mph
246 ft
0.000 sec

640d Cabrio
62 mph
62
mph
mph
259 ft
0.000 sec

640i Cabrio
▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
13.36 lb/hp
640d Cabrio
14.3 lb/hp
13.36 lb/hp
640i Cabrio
Fuel Economy / Emissions
640d Cabrio
640i Cabrio
Fuel Economy
40 mpg
combined
30 mpg
640d Cabrio
40 mpg
30 mpg
640i Cabrio
33 mpg
city
22 mpg
No data
highway
No data
18.5 gal
Fuel Tank Capacity
18.5 gal
737 mi
Range
557 mi
640d Cabrio
737 mi
557 mi
640i Cabrio
Environmental Impact
121.3 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
640d Cabrio
121.3 kWh
147.7 kWh
640i Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
248 g/mi (NEFZ)
CO2 Emissions
291 g/mi (NEFZ)
Practical Convenience
640d Cabrio
640i Cabrio
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
827 lb
9.9 cu ft
Trunk Volume
9.9 cu ft








No data
Cargo Volume (Seats Down)
No data