The Comparative Analysis :
BMW 640i Convertible Automatic (11 - 13) vs. Porsche 911 Targa 4S (17 - 18)
€ 83,900
€ 143,100
€ 83,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 143,100
ⓘ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 15.6 inches longer, 1.7 inches wider and 2.8 inches taller than the Porsche 911 Targa 4S.
BMW 640i Cabrio
Porsche 911 Targa 4S
53.7
74.6
81.9
50.9
72.9
77.9
74.6 in
Width
72.9 in
81.9 in
Width Incl. Mirrors
77.9 in
53.7 in
Height
50.9 in
112.4
192.7
96.5
177.1
192.7 in
Length
177.1 in
112.4 in
Wheelbase
96.5 in
Vehicle Weight
BMW 640i Cabrio
Porsche 911 Targa 4S
4222 lb
Curb Weight
3649 lb
5049 lb
Gross Vehicle
Weight
Weight
4464 lb
Weight Difference:
573 lb
13.57 %
General
BMW 640i Cabrio
Porsche 911 Targa 4S
F12
Generation
991
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 manual transmission
Engine
BMW 640i Cabrio
Porsche 911 Targa 4S
Straight-six gasoline engine with turbocharger
Engine Type
6-cylinder boxer gasoline engine with two turbochargers (biturbo)
BMW N55
Engine Series
N55-B30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
316 hp
at 5800 rpm
Power
444 hp
at 6500 rpm
BMW 640i Cabrio
316 hp
444 hp
Porsche 911 Targa 4S
332 lb‑ft
at 1300 rpm
Max. Torque
406 lb‑ft
at 2150 rpm
BMW 640i Cabrio
332 lb‑ft
406 lb‑ft
Porsche 911 Targa 4S
Performance
BMW 640i Cabrio
Porsche 911 Targa 4S
155 mph
Maximum Speed
191 mph
5.7 sec
Acceleration 0 to 62 mph
4.1 sec
62 mph
62
mph
mph
259 ft
0.000 sec
BMW 640i Cabrio
62 mph
62
mph
mph
187 ft
0.000 sec
Porsche 911 Targa 4S
▶ REPLAY
13.36 lb/hp
Weight-to-Power Ratio
8.22 lb/hp
BMW 640i Cabrio
13.36 lb/hp
8.22 lb/hp
Porsche 911 Targa 4S
Fuel Economy / Emissions
BMW 640i Cabrio
Porsche 911 Targa 4S
Fuel Economy
30 mpg
combined
24 mpg
BMW 640i Cabrio
30 mpg
24 mpg
Porsche 911 Targa 4S
22 mpg
city
18 mpg
No data
highway
31 mpg
18.5 gal
Fuel Tank Capacity
18 gal
557 mi
Range
436 mi
BMW 640i Cabrio
557 mi
436 mi
Porsche 911 Targa 4S
Environmental Impact
147.7 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).
183.8 kWh
BMW 640i Cabrio
147.7 kWh
183.8 kWh
Porsche 911 Targa 4S
Euro 5
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
291 g/mi (NEFZ)
CO2 Emissions
354 g/mi (NEFZ)
Practical Convenience
BMW 640i Cabrio
Porsche 911 Targa 4S
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
816 lb
9.9 cu ft
Trunk Volume
3.5 cu ft
No data
Cargo Volume (Seats Down)
No data
