The Comparative Analysis :

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

€ 177,900
Porsche 911 Turbo Cabriolet PDK (13 - 15) Porsche 911 Turbo Cabriolet
€ 91,700
 BMW 640i Cabrio Steptronic (15 - 18) BMW 640i Cabrio
€ 177,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 91,700

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

Vehicle Dimensions

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

Vehicle Weight

Porsche 911 Turbo Cabriolet
BMW 640i Cabrio
1740 kg
Kerb Weight
1895 kg
2045 kg
Gross Vehicle
Weight
2325 kg
Porsche 911 Turbo Cabriolet PDK (13 - 15)
Weight Difference:
155 kg
8.18 %
BMW 640i Cabrio Steptronic (15 - 18)

General

Porsche 911 Turbo Cabriolet
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 dual clutch transmission
Transmission
8-speed automatic transmission

Engine

Porsche 911 Turbo Cabriolet
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
3800 CC
Engine Capacity
2979 CC
513 bhp
at 6000 rpm
Power
316 bhp
at 5800 rpm
Porsche 911 Turbo Cabriolet
513 bhp
316 bhp
BMW 640i Cabrio
660 NM
at 5600 rpm
Max. Torque
450 NM
at 1300 rpm
Porsche 911 Turbo Cabriolet
660 NM
450 NM
BMW 640i Cabrio

Performance

Porsche 911 Turbo Cabriolet
BMW 640i Cabrio
196 mph
Maximum Speed
155 mph
3.5 sec
Acceleration 0 to 62 mph
5.5 sec
62 mph 62
mph

49 m
0.000 sec

Porsche 911 Turbo Cabriolet

62 mph 62
mph

76 m
0.000 sec

BMW 640i Cabrio

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

Fuel Economy / Emissions

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

Practical Convenience

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