The Comparative Analysis :

BMW 640d Convertible Steptronic (15 - 18) vs. Porsche 911 Targa 4 PDK (16 - 18)

€ 95,900
BMW 640d Convertible Steptronic (15 - 18) BMW 640d Cabrio
€ 121,900
 Porsche 911 Targa 4 PDK (16 - 18) Porsche 911 Targa 4
€ 95,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 121,900

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

Vehicle Dimensions

The BMW 640d Cabrio is significantly bigger in every dimension. It's 15.6 inches longer, 1.7 inches wider and 3 inches taller than the Porsche 911 Targa 4.
BMW 640d Cabrio
Porsche 911 Targa 4
53.7
Blueprint BMW 640d Convertible Steptronic (15 - 18)
74.6
81.9
50.7
Blueprint Porsche 911 Targa 4 PDK (16 - 18)
72.9
77.9
74.6 in
Width
72.9 in
81.9 in
Width Incl. Mirrors
77.9 in
53.7 in
Height
50.7 in
Blueprint BMW 640d Convertible Steptronic (15 - 18)
112.4
192.7
Blueprint Porsche 911 Targa 4 PDK (16 - 18)
96.5
177.1
192.7 in
Length
177.1 in
112.4 in
Wheelbase
96.5 in

Vehicle Weight

BMW 640d Cabrio
Porsche 911 Targa 4
4266 lb
Curb Weight
3671 lb
5214 lb
Gross Vehicle
Weight
4442 lb
BMW 640d Convertible Steptronic (15 - 18)
Weight Difference:
595 lb
13.95 %
Porsche 911 Targa 4 PDK (16 - 18)

General

BMW 640d Cabrio
Porsche 911 Targa 4
F12
Generation
991
Convertible
Car Body Style
Convertible
Diesel
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 640d Cabrio
Porsche 911 Targa 4
Straight-six diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
6-cylinder boxer gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N57
Engine Series
N57-D30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
309 hp
at 4400 rpm
Power
365 hp
at 6500 rpm
BMW 640d Cabrio
309 hp
365 hp
Porsche 911 Targa 4
465 lb‑ft
at 1500 rpm
Max. Torque
332 lb‑ft
at 1700 rpm
BMW 640d Cabrio
465 lb‑ft
332 lb‑ft
Porsche 911 Targa 4

Performance

BMW 640d Cabrio
Porsche 911 Targa 4
155 mph
Maximum Speed
178 mph
5.5 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

249 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

207 ft
0.000 sec

Porsche 911 Targa 4

▶ REPLAY
13.81 lb/hp
Weight-to-Power Ratio
10.06 lb/hp
BMW 640d Cabrio
13.81 lb/hp
10.06 lb/hp
Porsche 911 Targa 4

Fuel Economy / Emissions

BMW 640d Cabrio
Porsche 911 Targa 4
Fuel Economy
42 mpg
combined
30 mpg
BMW 640d Cabrio
42 mpg
30 mpg
Porsche 911 Targa 4
36 mpg
city
23 mpg
No data
highway
36 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
777 mi
Range
535 mi
BMW 640d Cabrio
777 mi
535 mi
Porsche 911 Targa 4
Environmental Impact
115.2 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).
149.7 kWh
BMW 640d Cabrio
115.2 kWh
149.7 kWh
Porsche 911 Targa 4
Euro 6b (NEFZ)
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
240 g/mi (NEFZ)
CO2 Emissions
293 g/mi (NEFZ)

Practical Convenience

BMW 640d Cabrio
Porsche 911 Targa 4
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
772 lb
9.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data