The Comparative Analysis :

Porsche 911 Carrera Cabriolet 4S (17 - 18) vs. BMW 640i Cabrio Automatic (11 - 13)

€ 143,100
Porsche 911 Carrera Cabriolet 4S (17 - 18) Porsche 911 Carrera Cabriolet 4S
€ 83,900
 BMW 640i Cabrio Automatic (11 - 13) BMW 640i Cabrio
€ 143,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 83,900

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

Vehicle Dimensions

The Porsche 911 Carrera Cabriolet 4S is significantly smaller in every dimension. It's 39.5 cm shorter, 4.2 cm narrower and 7.2 cm lower than the BMW 640i Cabrio.
Porsche 911 Carrera Cabriolet 4S
BMW 640i Cabrio
1293
Blueprint Porsche 911 Carrera Cabriolet 4S (17 - 18)
1852
1978
1365
Blueprint BMW 640i Cabrio Automatic (11 - 13)
1894
2081
1852 mm
Width
1894 mm
1978 mm
Width Incl. Mirrors
2081 mm
1293 mm
Height
1365 mm
Blueprint Porsche 911 Carrera Cabriolet 4S (17 - 18)
2450
4499
Blueprint BMW 640i Cabrio Automatic (11 - 13)
2855
4894
4499 mm
Length
4894 mm
2450 mm
Wheelbase
2855 mm

Vehicle Weight

Porsche 911 Carrera Cabriolet 4S
BMW 640i Cabrio
1635 kg
Kerb Weight
1915 kg
2000 kg
Gross Vehicle
Weight
2290 kg
Porsche 911 Carrera Cabriolet 4S (17 - 18)
Weight Difference:
280 kg
14.62 %
BMW 640i Cabrio Automatic (11 - 13)

General

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

Engine

Porsche 911 Carrera Cabriolet 4S
BMW 640i Cabrio
6-cylinder boxer petrol engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-six petrol engine with tur­bo­charger
Engine Series
BMW N55
Engine Code
N55-B30
4
Valves
4
6
Cylinders
6
2981 CC
Engine Capacity
2979 CC
444 bhp
at 6500 rpm
Power
316 bhp
at 5800 rpm
Porsche 911 Carrera Cabriolet 4S
444 bhp
316 bhp
BMW 640i Cabrio
550 NM
at 2150 rpm
Max. Torque
450 NM
at 1300 rpm
Porsche 911 Carrera Cabriolet 4S
550 NM
450 NM
BMW 640i Cabrio

Performance

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

57 m
0.000 sec

Porsche 911 Carrera Cabriolet 4S

62 mph 62
mph

79 m
0.000 sec

BMW 640i Cabrio

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

Fuel Economy / Emissions

Porsche 911 Carrera Cabriolet 4S
BMW 640i Cabrio
Fuel Economy
29 mpg
combined
36 mpg
Porsche 911 Carrera Cabriolet 4S
29 mpg
36 mpg
BMW 640i Cabrio
21 mpg
city
26 mpg
37 mpg
motorway
No data
Kraftstoffanzeige
68 L
Fuel Tank Capacity
70 L
Kraftstoffanzeige
436 mi
Range
557 mi
Porsche 911 Carrera Cabriolet 4S
436 mi
557 mi
BMW 640i Cabrio
Environmental Impact
183.8 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).
147.7 kWh
Porsche 911 Carrera Cabriolet 4S
183.8 kWh
147.7 kWh
BMW 640i Cabrio
Euro 6c (NEFZ) 36ZA-ZF
Emission Standard
Euro 5
220 g/km (NEFZ)
CO2 Emissions
181 g/km (NEFZ)

Practical Convenience

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