The Comparative Analysis :

BMW 640i Cabrio Steptronic (15 - 18) vs. Porsche 911 Targa 4 PDK (20 - ..)

€ 91,700
BMW 640i Cabrio Steptronic (15 - 18) BMW 640i Cabrio
€ 128,500
 Porsche 911 Targa 4 PDK (20 - ..) Porsche 911 Targa 4
€ 91,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 128,500

ⓘ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 37.5 cm longer, 4.2 cm wider and 6.8 cm taller than the Porsche 911 Targa 4.
BMW 640i Cabrio
Porsche 911 Targa 4
1365
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
1894
2081
1297
Blueprint Porsche 911 Targa 4 PDK (20 - ..)
1852
2024
1894 mm
Width
1852 mm
2081 mm
Width Incl. Mirrors
2024 mm
1365 mm
Height
1297 mm
Blueprint BMW 640i Cabrio Steptronic (15 - 18)
2855
4894
Blueprint Porsche 911 Targa 4 PDK (20 - ..)
2450
4519
4894 mm
Length
4519 mm
2855 mm
Wheelbase
2450 mm

Vehicle Weight

BMW 640i Cabrio
Porsche 911 Targa 4
1895 kg
Kerb Weight
1740 kg
2325 kg
Gross Vehicle
Weight
2060 kg
BMW 640i Cabrio Steptronic (15 - 18)
Weight Difference:
155 kg
8.18 %
Porsche 911 Targa 4 PDK (20 - ..)

General

BMW 640i Cabrio
Porsche 911 Targa 4
F12
Generation
992
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
8-speed dual clutch transmission

Engine

BMW 640i Cabrio
Porsche 911 Targa 4
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
2981 CC
316 bhp
at 5800 rpm
Power
380 bhp
at 6500 rpm
BMW 640i Cabrio
316 bhp
380 bhp
Porsche 911 Targa 4
450 NM
at 1300 rpm
Max. Torque
450 NM
at 1950 rpm
BMW 640i Cabrio
450 NM
450 NM
Porsche 911 Targa 4

Performance

BMW 640i Cabrio
Porsche 911 Targa 4
155 mph
Maximum Speed
180 mph
5.5 sec
Acceleration 0 to 62 mph
4.4 sec
62 mph 62
mph

76 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

61 m
0.000 sec

Porsche 911 Targa 4

▶ REPLAY
6 kg/bhp
Weight-to-Power Ratio
4.58 kg/bhp
BMW 640i Cabrio
6 kg/bhp
4.58 kg/bhp
Porsche 911 Targa 4

Fuel Economy / Emissions

BMW 640i Cabrio
Porsche 911 Targa 4
Fuel Economy
37 mpg
combined
29 mpg
BMW 640i Cabrio
37 mpg
29 mpg
Porsche 911 Targa 4
26 mpg
city
22 mpg
No data
motorway
35 mpg
Kraftstoffanzeige
70 L
Fuel Tank Capacity
67 L
Kraftstoffanzeige
565 mi
Range
425 mi
BMW 640i Cabrio
565 mi
425 mi
Porsche 911 Targa 4
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).
185.7 kWh
BMW 640i Cabrio
145.8 kWh
185.7 kWh
Porsche 911 Targa 4
Euro 6b (NEFZ)
Emission Standard
Euro 6d-ISC-FCM (WLTP) 36AP-AR
179 g/km (NEFZ)
CO2 Emissions
238 g/km (WLTP)

Practical Convenience

BMW 640i Cabrio
Porsche 911 Targa 4
2
Doors
2
4
No. of Seats
4
430 kg
Maximum Payload
320 kg
350 L
Boot Capacity
132 L
No data
Boot Capacity (Seats Down)
No data