The Comparative Analysis :

BMW 640d Convertible xDrive Steptronic (12 - 14) vs. Porsche 911 Carrera Convertible 4 PDK (16 - 18)

€ 90,800
BMW 640d Convertible xDrive Steptronic (12 - 14) BMW 640d Cabrio
€ 121,900
 Porsche 911 Carrera Convertible 4 PDK (16 - 18) Porsche 911 Carrera Convertible 4
€ 90,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 121,900

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The BMW 640d Cabrio is significantly bigger in every dimension. It's 15.6 inches longer, 1.7 inches wider and 3 inches taller than the Porsche 911 Carrera Convertible 4.
BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
53.7
Blueprint BMW 640d Convertible xDrive Steptronic (12 - 14)
74.6
81.9
50.8
Blueprint Porsche 911 Carrera Convertible 4 PDK (16 - 18)
72.9
77.9
74.6 in
Width
72.9 in
81.9 in
Width Incl. Mirrors
77.9 in
53.7 in
Height
50.8 in
Blueprint BMW 640d Convertible xDrive Steptronic (12 - 14)
112.4
192.7
Blueprint Porsche 911 Carrera Convertible 4 PDK (16 - 18)
96.5
177.1
192.7 in
Length
177.1 in
112.4 in
Wheelbase
96.5 in

Vehicle Weight

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
4420 lb
Curb Weight
3627 lb
5379 lb
Gross Vehicle
Weight
4387 lb
BMW 640d Convertible xDrive Steptronic (12 - 14)
Weight Difference:
794 lb
17.96 %
Porsche 911 Carrera Convertible 4 PDK (16 - 18)

General

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
F12
Generation
991
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
7-speed dual clutch transmission

Engine

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
Straight-six diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
6-cylinder boxer gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N57
Engine Series
N57-D30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
309 hp
at 4400 rpm
Power
365 hp
at 6500 rpm
BMW 640d Cabrio
309 hp
365 hp
Porsche 911 Carrera Convertible 4
465 lb‑ft
at 1500 rpm
Max. Torque
332 lb‑ft
at 1700 rpm
BMW 640d Cabrio
465 lb‑ft
332 lb‑ft
Porsche 911 Carrera Convertible 4

Performance

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
155 mph
Maximum Speed
178 mph
5.4 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

246 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

207 ft
0.000 sec

Porsche 911 Carrera Convertible 4

▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
9.94 lb/hp
BMW 640d Cabrio
14.3 lb/hp
9.94 lb/hp
Porsche 911 Carrera Convertible 4

Fuel Economy / Emissions

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
Fuel Economy
40 mpg
combined
30 mpg
BMW 640d Cabrio
40 mpg
30 mpg
Porsche 911 Carrera Convertible 4
33 mpg
city
23 mpg
No data
highway
36 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
737 mi
Range
535 mi
BMW 640d Cabrio
737 mi
535 mi
Porsche 911 Carrera Convertible 4
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).
149.7 kWh
BMW 640d Cabrio
121.3 kWh
149.7 kWh
Porsche 911 Carrera Convertible 4
Euro 5
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
248 g/mi (NEFZ)
CO2 Emissions
293 g/mi (NEFZ)

Practical Convenience

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
761 lb
9.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data