The Comparative Analysis :

BMW 640i Cabrio Steptronic (15 - 18) vs. Porsche 911 Carrera Cabriolet 4S PDK (08 - 12)

€ 91,700
BMW 640i Cabrio Steptronic (15 - 18) BMW 640i Cabrio
€ 120,200
 Porsche 911 Carrera Cabriolet 4S PDK (08 - 12) Porsche 911 Carrera Cabriolet 4S
€ 91,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 120,200

ⓘ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 45.9 cm longer, 4.2 cm wider and 6.5 cm taller than the Porsche 911 Carrera Cabriolet 4S.
BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
1365
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
1894
2081
1300
Blueprint Porsche 911 Carrera Cabriolet 4S PDK (08 - 12)
1852
2052
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
2052 mm
1365 mm
Height
1300 mm
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
2855
4894
Blueprint Porsche 911 Carrera Cabriolet 4S PDK (08 - 12)
2350
4435
4894 mm
Length
4435 mm
2855 mm
Wheelbase
2350 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
1895 kg
Kerb Weight
1670 kg
2325 kg
Gross Vehicle
Weight
1970 kg
BMW 640i Cabrio Steptronic (15 - 18)
Weight Difference:
225 kg
11.87 %
Porsche 911 Carrera Cabriolet 4S PDK (08 - 12)

General

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
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 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
380 bhp
at 6500 rpm
BMW 640i Cabrio
316 bhp
380 bhp
Porsche 911 Carrera Cabriolet 4S
450 NM
at 1300 rpm
Max. Torque
420 NM
at 4400 rpm
BMW 640i Cabrio
450 NM
420 NM
Porsche 911 Carrera Cabriolet 4S

Performance

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

76 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

65 m
0.000 sec

Porsche 911 Carrera Cabriolet 4S

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

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Carrera Cabriolet 4S
Fuel Economy
37 mpg
combined
26 mpg
BMW 640i Cabrio
37 mpg
26 mpg
Porsche 911 Carrera Cabriolet 4S
26 mpg
city
18 mpg
No data
motorway
38 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
67 L
Kraftstoffanzeige
565 mi
Range
389 mi
BMW 640i Cabrio
565 mi
389 mi
Porsche 911 Carrera Cabriolet 4S
Environmental Impact
145.8 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).
202.8 kWh
BMW 640i Cabrio
145.8 kWh
202.8 kWh
Porsche 911 Carrera Cabriolet 4S
Euro 6b (NEFZ)
Emission Standard
Euro 5
179 g/km (NEFZ)
CO2 Emissions
251 g/km (NEFZ)

Practical Convenience

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