The Comparative Analysis :

BMW 640i Cabrio xDrive Automatic (13 - 13) vs. Porsche 911 Carrera Cabriolet 4 PDK (16 - 18)

€ 87,300
BMW 640i Cabrio xDrive Automatic (13 - 13) BMW 640i Cabrio
€ 121,900
 Porsche 911 Carrera Cabriolet 4 PDK (16 - 18) Porsche 911 Carrera Cabriolet 4
€ 87,300
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 640i Cabrio is significantly bigger in every dimension. It's 39.5 cm longer, 4.2 cm wider and 7.5 cm taller than the Porsche 911 Carrera Cabriolet 4.
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
1365
Blueprint BMW 640i Cabrio xDrive Automatic (13 - 13)
1894
2081
1290
Blueprint Porsche 911 Carrera Cabriolet 4 PDK (16 - 18)
1852
1978
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
1978 mm
1365 mm
Height
1290 mm
Blueprint BMW 640i Cabrio xDrive Automatic (13 - 13)
2855
4894
Blueprint Porsche 911 Carrera Cabriolet 4 PDK (16 - 18)
2450
4499
4894 mm
Length
4499 mm
2855 mm
Wheelbase
2450 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
1985 kg
Kerb Weight
1645 kg
2400 kg
Gross Vehicle
Weight
1990 kg
BMW 640i Cabrio xDrive Automatic (13 - 13)
Weight Difference:
340 kg
17.13 %
Porsche 911 Carrera Cabriolet 4 PDK (16 - 18)

General

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
F12
Generation
991
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Permanent all-wheel drive
Drive
Permanent all-wheel drive
8-speed automatic transmission
Transmission
7-speed dual clutch transmission

Engine

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
Straight-six petrol engine with tur­bo­charger
Engine Type
6-cylinder boxer petrol engine with two tur­bo­chargers (bi­turbo)
BMW N55
Engine Series
N55-B30
Engine Code
4
Valves
4
6
Cylinders
6
2979 CC
Engine Capacity
2981 CC
316 bhp
at 5800 rpm
Power
365 bhp
at 6500 rpm
BMW 640i Cabrio
316 bhp
365 bhp
Porsche 911 Carrera Cabriolet 4
450 NM
at 1300 rpm
Max. Torque
450 NM
at 1700 rpm
BMW 640i Cabrio
450 NM
450 NM
Porsche 911 Carrera Cabriolet 4

Performance

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

75 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

63 m
0.000 sec

Porsche 911 Carrera Cabriolet 4

▶ REPLAY
6.28 kg/bhp
Weight-to-Power Ratio
4.51 kg/bhp
BMW 640i Cabrio
6.28 kg/bhp
4.51 kg/bhp
Porsche 911 Carrera Cabriolet 4

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
Fuel Economy
34 mpg
combined
36 mpg
BMW 640i Cabrio
34 mpg
36 mpg
Porsche 911 Carrera Cabriolet 4
25 mpg
city
27 mpg
No data
motorway
43 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
68 L
Kraftstoffanzeige
531 mi
Range
535 mi
BMW 640i Cabrio
531 mi
535 mi
Porsche 911 Carrera Cabriolet 4
Environmental Impact
155.3 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 640i Cabrio
155.3 kWh
149.7 kWh
Porsche 911 Carrera Cabriolet 4
Euro 5
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
192 g/km (NEFZ)
CO2 Emissions
182 g/km (NEFZ)

Practical Convenience

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4
2
Doors
2
4
No. of Seats
4
415 kg
Maximum Payload
345 kg
350 L
Boot Capacity
125 L
No data
Boot Capacity (Seats Down)
No data