The Comparative Analysis :
Porsche 911 Carrera Convertible S PDK (08 - 11) vs. BMW 640i Convertible xDrive Steptronic (15 - 18)
€ 113,400
€ 95,100
€ 113,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 95,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Porsche 911 Carrera Convertible S is significantly smaller in every dimension. It's 18.1 inches shorter, 3.4 inches narrower and 2.6 inches lower than the BMW 640i Cabrio.
Porsche 911 Carrera Convertible S
BMW 640i Cabrio
51.2
71.2
79.1
53.7
74.6
81.9
71.2 in
Width
74.6 in
79.1 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 S
BMW 640i Cabrio
3560 lb
Curb Weight
4332 lb
4233 lb
Gross Vehicle
Weight
Weight
5269 lb
Weight Difference:
772 lb
17.82 %
General
Porsche 911 Carrera Convertible S
BMW 640i Cabrio
997
Generation
F12
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
7-speed dual clutch transmission
Transmission
8-speed automatic transmission
Engine
Porsche 911 Carrera Convertible S
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
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 S
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 S
310 lb‑ft
332 lb‑ft
BMW 640i Cabrio
Performance
Porsche 911 Carrera Convertible S
BMW 640i Cabrio
186 mph
Maximum Speed
155 mph
4.7 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
213 ft
0.000 sec
Porsche 911 Carrera Convertible S
62 mph
62
mph
mph
246 ft
0.000 sec
BMW 640i Cabrio
▶ REPLAY
9.37 lb/hp
Weight-to-Power Ratio
13.71 lb/hp
Porsche 911 Carrera Convertible S
9.37 lb/hp
13.71 lb/hp
BMW 640i Cabrio
Fuel Economy / Emissions
Porsche 911 Carrera Convertible S
BMW 640i Cabrio
Fuel Economy
23 mpg
combined
29 mpg
Porsche 911 Carrera Convertible S
23 mpg
29 mpg
BMW 640i Cabrio
15 mpg
city
21 mpg
33 mpg
highway
No data
16.9 gal
Fuel Tank Capacity
18.5 gal
386 mi
Range
531 mi
Porsche 911 Carrera Convertible S
386 mi
531 mi
BMW 640i Cabrio
Environmental Impact
195.2 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).
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 S
195.2 kWh
155.3 kWh
BMW 640i Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
389 g/mi (NEFZ)
CO2 Emissions
307 g/mi (NEFZ)
Practical Convenience
Porsche 911 Carrera Convertible S
BMW 640i Cabrio
2
Doors
2
4
No. of Seats
4
672 lb
Maximum Payload
937 lb
3.8 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data
