The Comparative Analysis :
BMW 640i Cabrio Steptronic (15 - 18) vs. Porsche 911 Carrera Cabriolet PDK (08 - 11)
€ 91,700
€ 100,400
€ 91,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 100,400
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 640i Cabrio is significantly bigger in every dimension. It's 45.9 cm longer, 8.6 cm wider and 5.5 cm taller than the Porsche 911 Carrera Cabriolet.
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
1365
1894
2081
1310
1808
2008
1894 mm
Width
1808 mm
2081 mm
Width Incl. Mirrors
2008 mm
1365 mm
Height
1310 mm
2855
4894
2350
4435
4894 mm
Length
4435 mm
2855 mm
Wheelbase
2350 mm
Vehicle Weight
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
1895 kg
Kerb Weight
1605 kg
2325 kg
Gross Vehicle
Weight
Weight
1910 kg
Weight Difference:
290 kg
15.3 %
General
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
F12
Generation
997
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
Straight-six petrol engine with turbocharger
Engine Type
6-cylinder boxer petrol engine (naturally aspirated engine)
BMW N55
Engine Series
N55-B30
Engine Code
4
Valves
4
6
Cylinders
6
2979 CC
Engine Capacity
3614 CC
316 bhp
at 5800 rpm
Power
340 bhp
at 6500 rpm
BMW 640i Cabrio
316 bhp
340 bhp
Porsche 911 Carrera Cabriolet
450 NM
at 1300 rpm
Max. Torque
390 NM
at 4400 rpm
BMW 640i Cabrio
450 NM
390 NM
Porsche 911 Carrera Cabriolet
Performance
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
155 mph
Maximum Speed
178 mph
5.5 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
76 m
0.000 sec
BMW 640i Cabrio
62 mph
62
mph
mph
68 m
0.000 sec
Porsche 911 Carrera Cabriolet
▶ REPLAY
6 kg/bhp
Weight-to-Power Ratio
4.72 kg/bhp
BMW 640i Cabrio
6 kg/bhp
4.72 kg/bhp
Porsche 911 Carrera Cabriolet
Fuel Economy / Emissions
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
Fuel Economy
37 mpg
combined
29 mpg
BMW 640i Cabrio
37 mpg
29 mpg
Porsche 911 Carrera Cabriolet
26 mpg
city
19 mpg
No data
motorway
41 mpg
70 L
Fuel Tank Capacity
64 L
565 mi
Range
401 mi
BMW 640i Cabrio
565 mi
401 mi
Porsche 911 Carrera Cabriolet
Environmental Impact
145.8 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).
187.5 kWh
BMW 640i Cabrio
145.8 kWh
187.5 kWh
Porsche 911 Carrera Cabriolet
Euro 6b (NEFZ)
Emission Standard
Euro 5
179 g/km (NEFZ)
CO2 Emissions
233 g/km (NEFZ)
Practical Convenience
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet
2
Doors
2
4
No. of Seats
4
430 kg
Maximum Payload
305 kg
350 L
Boot Capacity
135 L
No data
Boot Capacity (Seats Down)
No data
