The Comparative Analysis :

BMW 640i Cabrio xDrive Steptronic (15 - 18) vs. Porsche 911 Turbo Cabriolet S PDK (10 - 13)

€ 95,100
BMW 640i Cabrio xDrive Steptronic (15 - 18) BMW 640i Cabrio
€ 184,500
 Porsche 911 Turbo Cabriolet S PDK (10 - 13) Porsche 911 Turbo Cabriolet S
€ 95,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 184,500

ⓘ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 S.
BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
1365
Blueprint BMW 640i Cabrio xDrive Steptronic (15 - 18)
1894
2081
1300
Blueprint Porsche 911 Turbo Cabriolet S PDK (10 - 13)
1852
2052
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
2052 mm
1365 mm
Height
1300 mm
Blueprint BMW 640i Cabrio xDrive Steptronic (15 - 18)
2855
4894
Blueprint Porsche 911 Turbo Cabriolet S PDK (10 - 13)
2350
4450
4894 mm
Length
4450 mm
2855 mm
Wheelbase
2350 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
1965 kg
Kerb Weight
1735 kg
2390 kg
Gross Vehicle
Weight
2010 kg
BMW 640i Cabrio xDrive Steptronic (15 - 18)
Weight Difference:
230 kg
11.7 %
Porsche 911 Turbo Cabriolet S PDK (10 - 13)

General

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
F12
Generation
997
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 S
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
523 bhp
at 6250 rpm
BMW 640i Cabrio
316 bhp
523 bhp
Porsche 911 Turbo Cabriolet S
450 NM
at 1300 rpm
Max. Torque
700 NM
at 2100 rpm
BMW 640i Cabrio
450 NM
700 NM
Porsche 911 Turbo Cabriolet S

Performance

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
155 mph
Maximum Speed
196 mph
5.4 sec
Acceleration 0 to 62 mph
3.4 sec
62 mph 62
mph

75 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

47 m
0.000 sec

Porsche 911 Turbo Cabriolet S

▶ REPLAY
6.22 kg/bhp
Weight-to-Power Ratio
3.32 kg/bhp
BMW 640i Cabrio
6.22 kg/bhp
3.32 kg/bhp
Porsche 911 Turbo Cabriolet S

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
Fuel Economy
34 mpg
combined
25 mpg
BMW 640i Cabrio
34 mpg
25 mpg
Porsche 911 Turbo Cabriolet S
25 mpg
city
16 mpg
No data
motorway
34 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
67 L
Kraftstoffanzeige
531 mi
Range
362 mi
BMW 640i Cabrio
531 mi
362 mi
Porsche 911 Turbo Cabriolet S
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).
217.9 kWh
BMW 640i Cabrio
155.3 kWh
217.9 kWh
Porsche 911 Turbo Cabriolet S
Euro 6b (NEFZ)
Emission Standard
Euro 5
191 g/km (NEFZ)
CO2 Emissions
270 g/km (NEFZ)

Practical Convenience

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