The Comparative Analysis :

BMW 640d Convertible xDrive Steptronic (12 - 14) vs. Porsche 911 Turbo Convertible PDK (13 - 15)

€ 90,800
BMW 640d Convertible xDrive Steptronic (12 - 14) BMW 640d Cabrio
€ 177,900
 Porsche 911 Turbo Convertible PDK (13 - 15) Porsche 911 Turbo Convertible
€ 90,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 177,900

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

Vehicle Dimensions

The BMW 640d Cabrio is considerably bigger in every dimension. It's 15.3 inches longer, 0.6 inches wider and 2.9 inches taller than the Porsche 911 Turbo Convertible.
BMW 640d Cabrio
Porsche 911 Turbo Convertible
53.7
Blueprint BMW 640d Convertible xDrive Steptronic (12 - 14)
74.6
81.9
50.9
Blueprint Porsche 911 Turbo Convertible PDK (13 - 15)
74
77.9
74.6 in
Width
74 in
81.9 in
Width Incl. Mirrors
77.9 in
53.7 in
Height
50.9 in
Blueprint BMW 640d Convertible xDrive Steptronic (12 - 14)
112.4
192.7
Blueprint Porsche 911 Turbo Convertible PDK (13 - 15)
96.5
177.4
192.7 in
Length
177.4 in
112.4 in
Wheelbase
96.5 in

Vehicle Weight

BMW 640d Cabrio
Porsche 911 Turbo Convertible
4420 lb
Curb Weight
3836 lb
5379 lb
Gross Vehicle
Weight
4508 lb
BMW 640d Convertible xDrive Steptronic (12 - 14)
Weight Difference:
584 lb
13.21 %
Porsche 911 Turbo Convertible PDK (13 - 15)

General

BMW 640d Cabrio
Porsche 911 Turbo Convertible
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 Turbo Convertible
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
3.8 L / 186 cu in
309 hp
at 4400 rpm
Power
513 hp
at 6000 rpm
BMW 640d Cabrio
309 hp
513 hp
Porsche 911 Turbo Convertible
465 lb‑ft
at 1500 rpm
Max. Torque
487 lb‑ft
at 5600 rpm
BMW 640d Cabrio
465 lb‑ft
487 lb‑ft
Porsche 911 Turbo Convertible

Performance

BMW 640d Cabrio
Porsche 911 Turbo Convertible
155 mph
Maximum Speed
196 mph
5.4 sec
Acceleration 0 to 62 mph
3.5 sec
62 mph 62
mph

246 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

161 ft
0.000 sec

Porsche 911 Turbo Convertible

▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
7.48 lb/hp
BMW 640d Cabrio
14.3 lb/hp
7.48 lb/hp
Porsche 911 Turbo Convertible

Fuel Economy / Emissions

BMW 640d Cabrio
Porsche 911 Turbo Convertible
Fuel Economy
40 mpg
combined
24 mpg
BMW 640d Cabrio
40 mpg
24 mpg
Porsche 911 Turbo Convertible
33 mpg
city
18 mpg
No data
highway
30 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
737 mi
Range
427 mi
BMW 640d Cabrio
737 mi
427 mi
Porsche 911 Turbo Convertible
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).
187.5 kWh
BMW 640d Cabrio
121.3 kWh
187.5 kWh
Porsche 911 Turbo Convertible
Euro 5
Emission Standard
Euro 6b (NEFZ)
248 g/mi (NEFZ)
CO2 Emissions
372 g/mi (NEFZ)

Practical Convenience

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