The Comparative Analysis :
Porsche 911 Carrera Convertible 4S (08 - 12) vs. BMW 640i Convertible xDrive Automatic (13 - 13)
€ 116,700
![Porsche 911 Carrera Convertible 4S (08 - 12)](graphbase/cars/cars_big_png/Porsche_911_Cabriolet_997-08.png)
€ 87,300
![BMW 640i Convertible xDrive Automatic (13 - 13)](graphbase/cars/cars_big/BMW_6er_F12.webp)
€ 116,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 87,300
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Porsche 911 Carrera Convertible 4S is significantly smaller in every dimension. It's 18.1 inches shorter, 1.7 inches narrower and 2.6 inches lower than the BMW 640i Cabrio.
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
51.2
72.9
80.8
53.7
74.6
81.9
72.9 in
Width
74.6 in
80.8 in
Width Incl. Mirrors
81.9 in
51.2 in
Height
53.7 in
92.5
174.6
112.4
192.7
174.6 in
Length
192.7 in
92.5 in
Wheelbase
112.4 in
Vehicle Weight
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
3616 lb
Curb Weight
4376 lb
4277 lb
Gross Vehicle
Weight
Weight
5291 lb
![Porsche 911 Carrera Convertible 4S (08 - 12)](graphbase/cars/cars_big_png/Porsche_911_Cabriolet_997-08.png)
Weight Difference:
761 lb
17.39 %
![BMW 640i Convertible xDrive Automatic (13 - 13)](graphbase/cars/cars_big_png/BMW_6er_F12.png)
General
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
997
Generation
F12
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
![](graphbase/drivetrain/AWD.png)
Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)
![](graphbase/drivetrain/AWD.png)
6-speed manual transmission
Transmission
8-speed automatic transmission
Engine
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
6-cylinder boxer gasoline engine (naturally aspirated engine)
Engine Type
Straight-six gasoline engine with turbocharger
Engine Series
BMW N55
Engine Code
N55-B30
![](graphbase/engines/BMW_N55.png)
4
Valves
4
6
Cylinders
6
3.8 L / 186 cu in
Displacement
3 L / 147 cu in
380 hp
at 6500 rpm
Power
316 hp
at 5800 rpm
Porsche 911 Carrera Convertible 4S
380 hp
316 hp
BMW 640i Cabrio
310 lb‑ft
at 4400 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
Porsche 911 Carrera Convertible 4S
310 lb‑ft
332 lb‑ft
BMW 640i Cabrio
Performance
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
185 mph
Maximum Speed
155 mph
4.9 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
223 ft
0.000 sec
![](graphbase/cars/cars_small_png/Porsche_911_Cabriolet_997-08.png)
Porsche 911 Carrera Convertible 4S
62 mph
62
mph
mph
246 ft
0.000 sec
![](graphbase/cars/cars_small_png/BMW_6er_F12.png)
BMW 640i Cabrio
▶ REPLAY
9.52 lb/hp
Weight-to-Power Ratio
13.85 lb/hp
Porsche 911 Carrera Convertible 4S
9.52 lb/hp
13.85 lb/hp
BMW 640i Cabrio
Fuel Economy / Emissions
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
Fuel Economy
21 mpg
combined
29 mpg
Porsche 911 Carrera Convertible 4S
21 mpg
29 mpg
BMW 640i Cabrio
14 mpg
city
21 mpg
30 mpg
highway
No data
17.7 gal
Fuel Tank Capacity
18.5 gal
372 mi
Range
531 mi
Porsche 911 Carrera Convertible 4S
372 mi
531 mi
BMW 640i Cabrio
Environmental Impact
212.1 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).
155.3 kWh
Porsche 911 Carrera Convertible 4S
212.1 kWh
155.3 kWh
BMW 640i Cabrio
Euro 5
Emission Standard
Euro 5
423 g/mi (NEFZ)
CO2 Emissions
309 g/mi (NEFZ)
Practical Convenience
Porsche 911 Carrera Convertible 4S
BMW 640i Cabrio
2
Doors
2
4
No. of Seats
4
661 lb
Maximum Payload
915 lb
3 cu ft
Trunk Volume
9.9 cu ft
![](graphbase/koffer/KM.png)
![](graphbase/koffer/KS.png)
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KM.png)
![](graphbase/koffer/KS.png)
No data
Cargo Volume (Seats Down)
No data