The Comparative Analysis :

BMW 840i Convertible xDrive Steptronic (19 - ..) vs. Porsche 911 Targa 4S (15 - 15)

€ 105,800
BMW 840i Convertible xDrive Steptronic (19 - ..) BMW 840i Cabrio
€ 138,900
 Porsche 911 Targa 4S (15 - 15) Porsche 911 Targa 4S
€ 105,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 138,900

ⓘ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 13.9 inches longer, 2 inches wider and 1.9 inches taller than the Porsche 911 Targa 4S.
BMW 840i Cabrio
Porsche 911 Targa 4S
52.7
Blueprint BMW 840i Convertible xDrive Steptronic (19 - ..)
74.9
84.1
50.8
Blueprint Porsche 911 Targa 4S (15 - 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
50.8 in
Blueprint BMW 840i Convertible xDrive Steptronic (19 - ..)
111.1
190.7
Blueprint Porsche 911 Targa 4S (15 - 15)
96.5
176.8
190.7 in
Length
176.8 in
111.1 in
Wheelbase
96.5 in

Vehicle Weight

BMW 840i Cabrio
Porsche 911 Targa 4S
4310 lb
Curb Weight
3594 lb
5291 lb
Gross Vehicle
Weight
4321 lb
BMW 840i Convertible xDrive Steptronic (19 - ..)
Weight Difference:
717 lb
16.64 %
Porsche 911 Targa 4S (15 - 15)

General

BMW 840i Cabrio
Porsche 911 Targa 4S
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 4S
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 Targa 4S
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 Targa 4S

Performance

BMW 840i Cabrio
Porsche 911 Targa 4S
155 mph
Maximum Speed
188 mph
4.9 sec
Acceleration 0 to 62 mph
4.7 sec
62 mph 62
mph

223 ft
0.000 sec

BMW 840i Cabrio

62 mph 62
mph

213 ft
0.000 sec

Porsche 911 Targa 4S

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

Fuel Economy / Emissions

BMW 840i Cabrio
Porsche 911 Targa 4S
Fuel Economy
31 mpg
combined
24 mpg
BMW 840i Cabrio
31 mpg
24 mpg
Porsche 911 Targa 4S
24 mpg
city
17 mpg
No data
highway
31 mpg
Kraftstoffanzeige
18 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
549 mi
Range
423 mi
BMW 840i Cabrio
549 mi
423 mi
Porsche 911 Targa 4S
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).
189.4 kWh
BMW 840i Cabrio
145.8 kWh
189.4 kWh
Porsche 911 Targa 4S
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6b (NEFZ)
330 g/mi (WLTP)
CO2 Emissions
381 g/mi (NEFZ)

Practical Convenience

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