The Comparative Analysis :

BMW 640i Cabrio Automatic (11 - 13) vs. Porsche 911 Turbo Cabriolet PDK (09 - 13)

€ 83,900
BMW 640i Cabrio Automatic (11 - 13) BMW 640i Cabrio
€ 165,600
 Porsche 911 Turbo Cabriolet PDK (09 - 13) Porsche 911 Turbo Cabriolet
€ 83,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 165,600

ⓘ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 44.4 cm longer, 4.2 cm wider and 6.5 cm taller than the Porsche 911 Turbo Cabriolet.
BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
1365
Blueprint BMW 640i Cabrio Automatic (11 - 13)
1894
2081
1300
Blueprint Porsche 911 Turbo Cabriolet PDK (09 - 13)
1852
2052
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
2052 mm
1365 mm
Height
1300 mm
Blueprint BMW 640i Cabrio Automatic (11 - 13)
2855
4894
Blueprint Porsche 911 Turbo Cabriolet PDK (09 - 13)
2350
4450
4894 mm
Length
4450 mm
2855 mm
Wheelbase
2350 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
1915 kg
Kerb Weight
1745 kg
2290 kg
Gross Vehicle
Weight
2020 kg
BMW 640i Cabrio Automatic (11 - 13)
Weight Difference:
170 kg
8.88 %
Porsche 911 Turbo Cabriolet PDK (09 - 13)

General

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
F12
Generation
997
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-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
493 bhp
at 6000 rpm
BMW 640i Cabrio
316 bhp
493 bhp
Porsche 911 Turbo Cabriolet
450 NM
at 1300 rpm
Max. Torque
650 NM
at 1950 rpm
BMW 640i Cabrio
450 NM
650 NM
Porsche 911 Turbo Cabriolet

Performance

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
155 mph
Maximum Speed
194 mph
5.7 sec
Acceleration 0 to 62 mph
3.7 sec
62 mph 62
mph

79 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

51 m
0.000 sec

Porsche 911 Turbo Cabriolet

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

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet
Fuel Economy
36 mpg
combined
25 mpg
BMW 640i Cabrio
36 mpg
25 mpg
Porsche 911 Turbo Cabriolet
26 mpg
city
16 mpg
No data
motorway
34 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
67 L
Kraftstoffanzeige
557 mi
Range
362 mi
BMW 640i Cabrio
557 mi
362 mi
Porsche 911 Turbo Cabriolet
Environmental Impact
147.7 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).
217.9 kWh
BMW 640i Cabrio
147.7 kWh
217.9 kWh
Porsche 911 Turbo Cabriolet
Euro 5
Emission Standard
Euro 5
181 g/km (NEFZ)
CO2 Emissions
270 g/km (NEFZ)

Practical Convenience

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