The Comparative Analysis :

BMW 640d Convertible Steptronic (15 - 18) vs. Porsche 911 Carrera Convertible 4S PDK (16 - 18)

€ 95,900
BMW 640d Convertible Steptronic (15 - 18) BMW 640d Cabrio
€ 136,100
 Porsche 911 Carrera Convertible 4S PDK (16 - 18) Porsche 911 Carrera Convertible 4S
€ 95,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 136,100

ⓘ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 2.9 inches taller than the Porsche 911 Carrera Convertible 4S.
BMW 640d Cabrio
Porsche 911 Carrera Convertible 4S
53.7
Blueprint BMW 640d Convertible Steptronic (15 - 18)
74.6
81.9
50.9
Blueprint Porsche 911 Carrera Convertible 4S 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
50.9 in
Blueprint BMW 640d Convertible Steptronic (15 - 18)
112.4
192.7
Blueprint Porsche 911 Carrera Convertible 4S 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 4S
4266 lb
Curb Weight
3649 lb
5214 lb
Gross Vehicle
Weight
4442 lb
BMW 640d Convertible Steptronic (15 - 18)
Weight Difference:
617 lb
14.46 %
Porsche 911 Carrera Convertible 4S PDK (16 - 18)

General

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

Engine

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4S
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
414 hp
at 6500 rpm
BMW 640d Cabrio
309 hp
414 hp
Porsche 911 Carrera Convertible 4S
465 lb‑ft
at 1500 rpm
Max. Torque
369 lb‑ft
at 1700 rpm
BMW 640d Cabrio
465 lb‑ft
369 lb‑ft
Porsche 911 Carrera Convertible 4S

Performance

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4S
155 mph
Maximum Speed
187 mph
5.5 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph 62
mph

249 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

190 ft
0.000 sec

Porsche 911 Carrera Convertible 4S

▶ REPLAY
13.81 lb/hp
Weight-to-Power Ratio
8.81 lb/hp
BMW 640d Cabrio
13.81 lb/hp
8.81 lb/hp
Porsche 911 Carrera Convertible 4S

Fuel Economy / Emissions

BMW 640d Cabrio
Porsche 911 Carrera Convertible 4S
Fuel Economy
42 mpg
combined
29 mpg
BMW 640d Cabrio
42 mpg
29 mpg
Porsche 911 Carrera Convertible 4S
36 mpg
city
23 mpg
No data
highway
35 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
777 mi
Range
528 mi
BMW 640d Cabrio
777 mi
528 mi
Porsche 911 Carrera Convertible 4S
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).
151.6 kWh
BMW 640d Cabrio
115.2 kWh
151.6 kWh
Porsche 911 Carrera Convertible 4S
Euro 6b (NEFZ)
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
240 g/mi (NEFZ)
CO2 Emissions
296 g/mi (NEFZ)

Practical Convenience

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