The Comparative Analysis :

BMW 840i Convertible Steptronic (19 - ..) vs. Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15)

€ 102,500
BMW 840i Convertible Steptronic (19 - ..) BMW 840i Cabrio
€ 141,600
 Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15) Porsche 911 Carrera Convertible 4 GTS
€ 102,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 141,600

ⓘ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 13.1 inches longer, 2 inches wider and 1.8 inches taller than the Porsche 911 Carrera Convertible 4 GTS.
BMW 840i Cabrio
Porsche 911 Carrera Convertible 4 GTS
52.7
Blueprint BMW 840i Convertible Steptronic (19 - ..)
74.9
84.1
50.9
Blueprint Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15)
72.9
77.9
74.9 in
Width
72.9 in
84.1 in
Width Incl. Mirrors
77.9 in
52.7 in
Height
50.9 in
Blueprint BMW 840i Convertible Steptronic (19 - ..)
111.1
190.7
Blueprint Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15)
96.5
177.5
190.7 in
Length
177.5 in
111.1 in
Wheelbase
96.5 in

Vehicle Weight

BMW 840i Cabrio
Porsche 911 Carrera Convertible 4 GTS
4200 lb
Curb Weight
3605 lb
5159 lb
Gross Vehicle
Weight
4310 lb
BMW 840i Convertible Steptronic (19 - ..)
Weight Difference:
595 lb
14.17 %
Porsche 911 Carrera Convertible 4 GTS PDK (14 - 15)

General

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

Engine

BMW 840i Cabrio
Porsche 911 Carrera Convertible 4 GTS
Straight-six gasoline engine with tur­bo­charger
Engine Type
6-cylinder boxer gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
BMW B58
Engine Series
B58-B30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3.8 L / 186 cu in
335 hp
at 5000 rpm
Power
424 hp
at 7500 rpm
BMW 840i Cabrio
335 hp
424 hp
Porsche 911 Carrera Convertible 4 GTS
369 lb‑ft
at 1600 rpm
Max. Torque
325 lb‑ft
at 5750 rpm
BMW 840i Cabrio
369 lb‑ft
325 lb‑ft
Porsche 911 Carrera Convertible 4 GTS

Performance

BMW 840i Cabrio
Porsche 911 Carrera Convertible 4 GTS
155 mph
Maximum Speed
187 mph
5.3 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph 62
mph

243 ft
0.000 sec

BMW 840i Cabrio

62 mph 62
mph

190 ft
0.000 sec

Porsche 911 Carrera Convertible 4 GTS

▶ REPLAY
12.54 lb/hp
Weight-to-Power Ratio
8.5 lb/hp
BMW 840i Cabrio
12.54 lb/hp
8.5 lb/hp
Porsche 911 Carrera Convertible 4 GTS

Fuel Economy / Emissions

BMW 840i Cabrio
Porsche 911 Carrera Convertible 4 GTS
Fuel Economy
32 mpg
combined
26 mpg
BMW 840i Cabrio
32 mpg
26 mpg
Porsche 911 Carrera Convertible 4 GTS
26 mpg
city
19 mpg
No data
highway
33 mpg
Kraftstoffanzeige
18 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
571 mi
Range
459 mi
BMW 840i Cabrio
571 mi
459 mi
Porsche 911 Carrera Convertible 4 GTS
Environmental Impact
140.2 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).
174.3 kWh
BMW 840i Cabrio
140.2 kWh
174.3 kWh
Porsche 911 Carrera Convertible 4 GTS
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6b (NEFZ)
311 g/mi (WLTP)
CO2 Emissions
344 g/mi (NEFZ)

Practical Convenience

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