The Comparative Analysis :
Porsche 911 Targa 4 PDK (16 - 18) vs. BMW 640i Convertible Steptronic (15 - 18)
€ 121,900
€ 91,700
€ 121,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 91,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Porsche 911 Targa 4 is significantly smaller in every dimension. It's 15.6 inches shorter, 1.7 inches narrower and 3 inches lower than the BMW 640i Cabrio.
Porsche 911 Targa 4
BMW 640i Cabrio
50.7
72.9
77.9
53.7
74.6
81.9
72.9 in
Width
74.6 in
77.9 in
Width Incl. Mirrors
81.9 in
50.7 in
Height
53.7 in
96.5
177.1
112.4
192.7
177.1 in
Length
192.7 in
96.5 in
Wheelbase
112.4 in
Vehicle Weight
Porsche 911 Targa 4
BMW 640i Cabrio
3671 lb
Curb Weight
4178 lb
4442 lb
Gross Vehicle
Weight
Weight
5126 lb
Weight Difference:
507 lb
12.14 %
General
Porsche 911 Targa 4
BMW 640i Cabrio
991
Generation
F12
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
7-speed dual clutch transmission
Transmission
8-speed automatic transmission
Engine
Porsche 911 Targa 4
BMW 640i Cabrio
6-cylinder boxer gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-six gasoline engine with turbocharger
Engine Series
BMW N55
Engine Code
N55-B30
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
365 hp
at 6500 rpm
Power
316 hp
at 5800 rpm
Porsche 911 Targa 4
365 hp
316 hp
BMW 640i Cabrio
332 lb‑ft
at 1700 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
Porsche 911 Targa 4
332 lb‑ft
332 lb‑ft
BMW 640i Cabrio
Performance
Porsche 911 Targa 4
BMW 640i Cabrio
178 mph
Maximum Speed
155 mph
4.5 sec
Acceleration 0 to 62 mph
5.5 sec
62 mph
62
mph
mph
207 ft
0.000 sec
Porsche 911 Targa 4
62 mph
62
mph
mph
249 ft
0.000 sec
BMW 640i Cabrio
▶ REPLAY
10.06 lb/hp
Weight-to-Power Ratio
13.22 lb/hp
Porsche 911 Targa 4
10.06 lb/hp
13.22 lb/hp
BMW 640i Cabrio
Fuel Economy / Emissions
Porsche 911 Targa 4
BMW 640i Cabrio
Fuel Economy
30 mpg
combined
31 mpg
Porsche 911 Targa 4
30 mpg
31 mpg
BMW 640i Cabrio
23 mpg
city
22 mpg
36 mpg
highway
No data
18 gal
Fuel Tank Capacity
18.5 gal
535 mi
Range
565 mi
Porsche 911 Targa 4
535 mi
565 mi
BMW 640i Cabrio
Environmental Impact
149.7 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).
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).
145.8 kWh
Porsche 911 Targa 4
149.7 kWh
145.8 kWh
BMW 640i Cabrio
Euro 6c (NEFZ) 36ZA-ZF
Emission Standard
Euro 6b (NEFZ)
293 g/mi (NEFZ)
CO2 Emissions
288 g/mi (NEFZ)
Practical Convenience
Porsche 911 Targa 4
BMW 640i Cabrio
2
Doors
2
4
No. of Seats
4
772 lb
Maximum Payload
948 lb
3.5 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data
