The Comparative Analysis :

BMW 640i Cabrio Steptronic (13 - 14) vs. Porsche 911 Carrera Cabriolet 4S PDK (12 - 15)

€ 83,900
BMW 640i Cabrio Steptronic (13 - 14) BMW 640i Cabrio
€ 128,600
 Porsche 911 Carrera Cabriolet 4S PDK (12 - 15) Porsche 911 Carrera Cabriolet 4S
€ 83,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 128,600

ⓘ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 40.3 cm longer, 4.2 cm wider and 7.1 cm taller than the Porsche 911 Carrera Cabriolet 4S.
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
1365
Blueprint BMW 640i Cabrio Steptronic (13 - 14)
1894
2081
1294
Blueprint Porsche 911 Carrera Cabriolet 4S PDK (12 - 15)
1852
1978
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
1978 mm
1365 mm
Height
1294 mm
Blueprint BMW 640i Cabrio Steptronic (13 - 14)
2855
4894
Blueprint Porsche 911 Carrera Cabriolet 4S PDK (12 - 15)
2450
4491
4894 mm
Length
4491 mm
2855 mm
Wheelbase
2450 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
1915 kg
Kerb Weight
1610 kg
2290 kg
Gross Vehicle
Weight
1955 kg
BMW 640i Cabrio Steptronic (13 - 14)
Weight Difference:
305 kg
15.93 %
Porsche 911 Carrera Cabriolet 4S PDK (12 - 15)

General

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
F12
Generation
991
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 Carrera Cabriolet 4S
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
3800 CC
316 bhp
at 5800 rpm
Power
395 bhp
at 7400 rpm
BMW 640i Cabrio
316 bhp
395 bhp
Porsche 911 Carrera Cabriolet 4S
450 NM
at 1300 rpm
Max. Torque
440 NM
at 5600 rpm
BMW 640i Cabrio
450 NM
440 NM
Porsche 911 Carrera Cabriolet 4S

Performance

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
155 mph
Maximum Speed
183 mph
5.7 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

79 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

63 m
0.000 sec

Porsche 911 Carrera Cabriolet 4S

▶ REPLAY
6.06 kg/bhp
Weight-to-Power Ratio
4.08 kg/bhp
BMW 640i Cabrio
6.06 kg/bhp
4.08 kg/bhp
Porsche 911 Carrera Cabriolet 4S

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
Fuel Economy
36 mpg
combined
31 mpg
BMW 640i Cabrio
36 mpg
31 mpg
Porsche 911 Carrera Cabriolet 4S
26 mpg
city
22 mpg
No data
motorway
40 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
68 L
Kraftstoffanzeige
557 mi
Range
459 mi
BMW 640i Cabrio
557 mi
459 mi
Porsche 911 Carrera Cabriolet 4S
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).
174.3 kWh
BMW 640i Cabrio
147.7 kWh
174.3 kWh
Porsche 911 Carrera Cabriolet 4S
Euro 6b (NEFZ)
Emission Standard
Euro 5 / Euro 6
181 g/km (NEFZ)
CO2 Emissions
217 g/km (NEFZ)

Practical Convenience

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