The Comparative Analysis :

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

€ 87,300
BMW 640i Cabrio xDrive Automatic (13 - 13) BMW 640i Cabrio
€ 190,000
 Porsche 911 Turbo Cabriolet PDK (16 - 18) Porsche 911 Turbo Cabriolet
€ 87,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 190,000

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

Vehicle Dimensions

The BMW 640i Cabrio is considerably bigger in every dimension. It's 38.7 cm longer, 1.4 cm wider and 7.1 cm taller than the Porsche 911 Turbo Cabriolet.
BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
1365
Blueprint BMW 640i Cabrio xDrive Automatic (13 - 13)
1894
2081
1294
Blueprint Porsche 911 Turbo Cabriolet PDK (16 - 18)
1880
1978
1894 mm
Width
1880 mm
2081 mm
Width Incl. Mirrors
1978 mm
1365 mm
Height
1294 mm
Blueprint BMW 640i Cabrio xDrive Automatic (13 - 13)
2855
4894
Blueprint Porsche 911 Turbo Cabriolet PDK (16 - 18)
2450
4507
4894 mm
Length
4507 mm
2855 mm
Wheelbase
2450 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
1985 kg
Kerb Weight
1740 kg
2400 kg
Gross Vehicle
Weight
2065 kg
BMW 640i Cabrio xDrive Automatic (13 - 13)
Weight Difference:
245 kg
12.34 %
Porsche 911 Turbo Cabriolet PDK (16 - 18)

General

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
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 Turbo Cabriolet
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
3800 CC
316 bhp
at 5800 rpm
Power
533 bhp
at 6400 rpm
BMW 640i Cabrio
316 bhp
533 bhp
Porsche 911 Turbo Cabriolet
450 NM
at 1300 rpm
Max. Torque
660 NM
at 5600 rpm
BMW 640i Cabrio
450 NM
660 NM
Porsche 911 Turbo Cabriolet

Performance

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
155 mph
Maximum Speed
199 mph
5.4 sec
Acceleration 0 to 62 mph
3.1 sec
62 mph 62
mph

75 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

43 m
0.000 sec

Porsche 911 Turbo Cabriolet

▶ REPLAY
6.28 kg/bhp
Weight-to-Power Ratio
3.26 kg/bhp
BMW 640i Cabrio
6.28 kg/bhp
3.26 kg/bhp
Porsche 911 Turbo Cabriolet

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
Fuel Economy
34 mpg
combined
30 mpg
BMW 640i Cabrio
34 mpg
30 mpg
Porsche 911 Turbo Cabriolet
25 mpg
city
23 mpg
No data
motorway
37 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
68 L
Kraftstoffanzeige
531 mi
Range
454 mi
BMW 640i Cabrio
531 mi
454 mi
Porsche 911 Turbo Cabriolet
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).
176.2 kWh
BMW 640i Cabrio
155.3 kWh
176.2 kWh
Porsche 911 Turbo Cabriolet
Euro 5
Emission Standard
Euro 6b (NEFZ)
192 g/km (NEFZ)
CO2 Emissions
216 g/km (NEFZ)

Practical Convenience

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