The Comparative Analysis :

BMW 840i Convertible xDrive Steptronic (19 - ..) vs. Porsche 911 Targa 4 GTS (17 - 18)

€ 105,800
BMW 840i Convertible xDrive Steptronic (19 - ..) BMW 840i Cabrio
€ 146,200
 Porsche 911 Targa 4 GTS (17 - 18) Porsche 911 Targa 4 GTS
€ 105,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 146,200

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

Vehicle Dimensions

The BMW 840i Cabrio is considerably bigger in every dimension. It's 12.4 inches longer, 2 inches wider and 1.9 inches taller than the Porsche 911 Targa 4 GTS.
BMW 840i Cabrio
Porsche 911 Targa 4 GTS
52.7
Blueprint BMW 840i Convertible xDrive Steptronic (19 - ..)
74.9
84.1
50.8
Blueprint Porsche 911 Targa 4 GTS (17 - 18)
72.9
77.9
74.9 in
Width
72.9 in
84.1 in
Width Incl. Mirrors
77.9 in
52.7 in
Height
50.8 in
Blueprint BMW 840i Convertible xDrive Steptronic (19 - ..)
111.1
190.7
Blueprint Porsche 911 Targa 4 GTS (17 - 18)
96.5
178.3
190.7 in
Length
178.3 in
111.1 in
Wheelbase
96.5 in

Vehicle Weight

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
4310 lb
Curb Weight
3660 lb
5291 lb
Gross Vehicle
Weight
4464 lb
BMW 840i Convertible xDrive Steptronic (19 - ..)
Weight Difference:
650 lb
15.08 %
Porsche 911 Targa 4 GTS (17 - 18)

General

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
G14
Generation
991
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
7-speed manual transmission

Engine

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
Straight-six gasoline engine with tur­bo­charger
Engine Type
6-cylinder boxer gasoline engine with two tur­bo­chargers (bi­turbo)
BMW B58
Engine Series
B58-B30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
335 hp
at 5000 rpm
Power
444 hp
at 6500 rpm
BMW 840i Cabrio
335 hp
444 hp
Porsche 911 Targa 4 GTS
369 lb‑ft
at 1600 rpm
Max. Torque
406 lb‑ft
at 2150 rpm
BMW 840i Cabrio
369 lb‑ft
406 lb‑ft
Porsche 911 Targa 4 GTS

Performance

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
155 mph
Maximum Speed
191 mph
4.9 sec
Acceleration 0 to 62 mph
4.1 sec
62 mph 62
mph

223 ft
0.000 sec

BMW 840i Cabrio

62 mph 62
mph

187 ft
0.000 sec

Porsche 911 Targa 4 GTS

▶ REPLAY
12.87 lb/hp
Weight-to-Power Ratio
8.24 lb/hp
BMW 840i Cabrio
12.87 lb/hp
8.24 lb/hp
Porsche 911 Targa 4 GTS

Fuel Economy / Emissions

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
Fuel Economy
31 mpg
combined
24 mpg
BMW 840i Cabrio
31 mpg
24 mpg
Porsche 911 Targa 4 GTS
24 mpg
city
18 mpg
No data
highway
31 mpg
Kraftstoffanzeige
18 gal
Fuel Tank Capacity
17.7 gal
Kraftstoffanzeige
549 mi
Range
429 mi
BMW 840i Cabrio
549 mi
429 mi
Porsche 911 Targa 4 GTS
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).
183.8 kWh
BMW 840i Cabrio
145.8 kWh
183.8 kWh
Porsche 911 Targa 4 GTS
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
330 g/mi (WLTP)
CO2 Emissions
354 g/mi (NEFZ)

Practical Convenience

BMW 840i Cabrio
Porsche 911 Targa 4 GTS
2
Doors
2
4
No. of Seats
4
981 lb
Maximum Payload
805 lb
9.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data