The Comparative Analysis :

BMW 840i Convertible Steptronic (19 - ..) vs. Porsche 911 Targa 4 PDK (08 - 12)

€ 102,500
BMW 840i Convertible Steptronic (19 - ..) BMW 840i Cabrio
€ 104,300
 Porsche 911 Targa 4 PDK (08 - 12) Porsche 911 Targa 4
€ 102,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 104,300

ⓘ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 16.1 inches longer, 2 inches wider and 1.1 inches taller than the Porsche 911 Targa 4.
BMW 840i Cabrio
Porsche 911 Targa 4
52.7
Blueprint BMW 840i Convertible Steptronic (19 - ..)
74.9
84.1
51.6
Blueprint Porsche 911 Targa 4 PDK (08 - 12)
72.9
80.8
74.9 in
Width
72.9 in
84.1 in
Width Incl. Mirrors
80.8 in
52.7 in
Height
51.6 in
Blueprint BMW 840i Convertible Steptronic (19 - ..)
111.1
190.7
Blueprint Porsche 911 Targa 4 PDK (08 - 12)
92.5
174.6
190.7 in
Length
174.6 in
111.1 in
Wheelbase
92.5 in

Vehicle Weight

BMW 840i Cabrio
Porsche 911 Targa 4
4200 lb
Curb Weight
3605 lb
5159 lb
Gross Vehicle
Weight
4277 lb
BMW 840i Convertible Steptronic (19 - ..)
Weight Difference:
595 lb
14.17 %
Porsche 911 Targa 4 PDK (08 - 12)

General

BMW 840i Cabrio
Porsche 911 Targa 4
G14
Generation
997
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 Targa 4
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
3.6 L / 176 cu in
335 hp
at 5000 rpm
Power
340 hp
at 6500 rpm
BMW 840i Cabrio
335 hp
340 hp
Porsche 911 Targa 4
369 lb‑ft
at 1600 rpm
Max. Torque
288 lb‑ft
at 4400 rpm
BMW 840i Cabrio
369 lb‑ft
288 lb‑ft
Porsche 911 Targa 4

Performance

BMW 840i Cabrio
Porsche 911 Targa 4
155 mph
Maximum Speed
175 mph
5.3 sec
Acceleration 0 to 62 mph
5 sec
62 mph 62
mph

243 ft
0.000 sec

BMW 840i Cabrio

62 mph 62
mph

226 ft
0.000 sec

Porsche 911 Targa 4

▶ REPLAY
12.54 lb/hp
Weight-to-Power Ratio
10.6 lb/hp
BMW 840i Cabrio
12.54 lb/hp
10.6 lb/hp
Porsche 911 Targa 4

Fuel Economy / Emissions

BMW 840i Cabrio
Porsche 911 Targa 4
Fuel Economy
32 mpg
combined
23 mpg
BMW 840i Cabrio
32 mpg
23 mpg
Porsche 911 Targa 4
26 mpg
city
15 mpg
No data
highway
33 mpg
Kraftstoffanzeige
18 gal
Fuel Tank Capacity
17.7 gal
Kraftstoffanzeige
571 mi
Range
404 mi
BMW 840i Cabrio
571 mi
404 mi
Porsche 911 Targa 4
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).
195.2 kWh
BMW 840i Cabrio
140.2 kWh
195.2 kWh
Porsche 911 Targa 4
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 5
311 g/mi (WLTP)
CO2 Emissions
389 g/mi (NEFZ)

Practical Convenience

BMW 840i Cabrio
Porsche 911 Targa 4
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
672 lb
9.9 cu ft
Trunk Volume
3 cu ft
No data
Cargo Volume (Seats Down)
No data