The Comparative Analysis :
BMW 640i Convertible Steptronic (15 - 18) vs. Porsche 911 Targa 4 PDK (08 - 12)
€ 91,700
€ 104,300
€ 91,700
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 640i Cabrio is significantly bigger in every dimension. It's 18.1 inches longer, 1.7 inches wider and 2.2 inches taller than the Porsche 911 Targa 4.
BMW 640i Cabrio
Porsche 911 Targa 4
53.7
74.6
81.9
51.6
72.9
80.8
74.6 in
Width
72.9 in
81.9 in
Width Incl. Mirrors
80.8 in
53.7 in
Height
51.6 in
112.4
192.7
92.5
174.6
192.7 in
Length
174.6 in
112.4 in
Wheelbase
92.5 in
Vehicle Weight
BMW 640i Cabrio
Porsche 911 Targa 4
4178 lb
Curb Weight
3605 lb
5126 lb
Gross Vehicle
Weight
Weight
4277 lb
Weight Difference:
573 lb
13.72 %
General
BMW 640i Cabrio
Porsche 911 Targa 4
F12
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 640i Cabrio
Porsche 911 Targa 4
Straight-six gasoline engine with turbocharger
Engine Type
6-cylinder boxer gasoline engine (naturally aspirated engine)
BMW N55
Engine Series
N55-B30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3.6 L / 176 cu in
316 hp
at 5800 rpm
Power
340 hp
at 6500 rpm
BMW 640i Cabrio
316 hp
340 hp
Porsche 911 Targa 4
332 lb‑ft
at 1300 rpm
Max. Torque
288 lb‑ft
at 4400 rpm
BMW 640i Cabrio
332 lb‑ft
288 lb‑ft
Porsche 911 Targa 4
Performance
BMW 640i Cabrio
Porsche 911 Targa 4
155 mph
Maximum Speed
175 mph
5.5 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
249 ft
0.000 sec
BMW 640i Cabrio
62 mph
62
mph
mph
226 ft
0.000 sec
Porsche 911 Targa 4
▶ REPLAY
13.22 lb/hp
Weight-to-Power Ratio
10.6 lb/hp
BMW 640i Cabrio
13.22 lb/hp
10.6 lb/hp
Porsche 911 Targa 4
Fuel Economy / Emissions
BMW 640i Cabrio
Porsche 911 Targa 4
Fuel Economy
31 mpg
combined
23 mpg
BMW 640i Cabrio
31 mpg
23 mpg
Porsche 911 Targa 4
22 mpg
city
15 mpg
No data
highway
33 mpg
18.5 gal
Fuel Tank Capacity
17.7 gal
565 mi
Range
404 mi
BMW 640i Cabrio
565 mi
404 mi
Porsche 911 Targa 4
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).
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 640i Cabrio
145.8 kWh
195.2 kWh
Porsche 911 Targa 4
Euro 6b (NEFZ)
Emission Standard
Euro 5
288 g/mi (NEFZ)
CO2 Emissions
389 g/mi (NEFZ)
Practical Convenience
BMW 640i Cabrio
Porsche 911 Targa 4
2
Doors
2
4
No. of Seats
4
948 lb
Maximum Payload
672 lb
9.9 cu ft
Trunk Volume
3 cu ft
No data
Cargo Volume (Seats Down)
No data
