The Comparative Analysis :

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

€ 91,700
BMW 640i Cabrio Steptronic (15 - 18) BMW 640i Cabrio
€ 209,800
 Porsche 911 Turbo Cabriolet S PDK (13 - 15) Porsche 911 Turbo Cabriolet S
€ 91,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 209,800

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

Vehicle Dimensions

The BMW 640i Cabrio is considerably bigger in every dimension. It's 38.8 cm longer, 1.4 cm wider and 7.3 cm taller than the Porsche 911 Turbo Cabriolet S.
BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
1365
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
1894
2081
1292
Blueprint Porsche 911 Turbo Cabriolet S PDK (13 - 15)
1880
1978
1894 mm
Width
1880 mm
2081 mm
Width Incl. Mirrors
1978 mm
1365 mm
Height
1292 mm
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
2855
4894
Blueprint Porsche 911 Turbo Cabriolet S PDK (13 - 15)
2450
4506
4894 mm
Length
4506 mm
2855 mm
Wheelbase
2450 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
1895 kg
Kerb Weight
1750 kg
2325 kg
Gross Vehicle
Weight
2045 kg
BMW 640i Cabrio Steptronic (15 - 18)
Weight Difference:
145 kg
7.65 %
Porsche 911 Turbo Cabriolet S PDK (13 - 15)

General

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
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 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
552 bhp
at 6500 rpm
BMW 640i Cabrio
316 bhp
552 bhp
Porsche 911 Turbo Cabriolet S
450 NM
at 1300 rpm
Max. Torque
700 NM
at 5600 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
198 mph
5.5 sec
Acceleration 0 to 62 mph
3.2 sec
62 mph 62
mph

76 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

44 m
0.000 sec

Porsche 911 Turbo Cabriolet S

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

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Turbo Cabriolet S
Fuel Economy
37 mpg
combined
29 mpg
BMW 640i Cabrio
37 mpg
29 mpg
Porsche 911 Turbo Cabriolet S
26 mpg
city
21 mpg
No data
motorway
36 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
68 L
Kraftstoffanzeige
565 mi
Range
427 mi
BMW 640i Cabrio
565 mi
427 mi
Porsche 911 Turbo Cabriolet S
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).
187.5 kWh
BMW 640i Cabrio
145.8 kWh
187.5 kWh
Porsche 911 Turbo Cabriolet S
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
179 g/km (NEFZ)
CO2 Emissions
231 g/km (NEFZ)

Practical Convenience

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