The Comparative Analysis :
BMW 650i Convertible Steptronic (13 - 14) vs. Porsche 911 Turbo Convertible PDK (09 - 13)
€ 95,900
€ 165,600
€ 95,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 165,600
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 650i Cabrio is significantly bigger in every dimension. It's 17.5 inches longer, 1.7 inches wider and 2.6 inches taller than the Porsche 911 Turbo Convertible.
BMW 650i Cabrio
Porsche 911 Turbo Convertible
53.7
74.6
81.9
51.2
72.9
80.8
74.6 in
Width
72.9 in
81.9 in
Width Incl. Mirrors
80.8 in
53.7 in
Height
51.2 in
112.4
192.7
92.5
175.2
192.7 in
Length
175.2 in
112.4 in
Wheelbase
92.5 in
Vehicle Weight
BMW 650i Cabrio
Porsche 911 Turbo Convertible
4442 lb
Curb Weight
3847 lb
5269 lb
Gross Vehicle
Weight
Weight
4453 lb
Weight Difference:
595 lb
13.39 %
General
BMW 650i Cabrio
Porsche 911 Turbo Convertible
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 650i Cabrio
Porsche 911 Turbo Convertible
V8 gasoline engine with two turbochargers (biturbo)
Engine Type
6-cylinder boxer gasoline engine with two turbochargers (biturbo)
BMW N63
Engine Series
N63-B44
Engine Code
4
Valves
4
8
Cylinders
6
4.4 L / 215 cu in
Displacement
3.8 L / 186 cu in
444 hp
at 5500 rpm
Power
493 hp
at 6000 rpm
BMW 650i Cabrio
444 hp
493 hp
Porsche 911 Turbo Convertible
479 lb‑ft
at 2000 rpm
Max. Torque
479 lb‑ft
at 1950 rpm
BMW 650i Cabrio
479 lb‑ft
479 lb‑ft
Porsche 911 Turbo Convertible
Performance
BMW 650i Cabrio
Porsche 911 Turbo Convertible
155 mph
Maximum Speed
194 mph
5 sec
Acceleration 0 to 62 mph
3.7 sec
62 mph
62
mph
mph
226 ft
0.000 sec
BMW 650i Cabrio
62 mph
62
mph
mph
167 ft
0.000 sec
Porsche 911 Turbo Convertible
▶ REPLAY
10 lb/hp
Weight-to-Power Ratio
7.8 lb/hp
BMW 650i Cabrio
10 lb/hp
7.8 lb/hp
Porsche 911 Turbo Convertible
Fuel Economy / Emissions
BMW 650i Cabrio
Porsche 911 Turbo Convertible
Fuel Economy
26 mpg
combined
20 mpg
BMW 650i Cabrio
26 mpg
20 mpg
Porsche 911 Turbo Convertible
19 mpg
city
14 mpg
No data
highway
29 mpg
18.5 gal
Fuel Tank Capacity
17.7 gal
489 mi
Range
362 mi
BMW 650i Cabrio
489 mi
362 mi
Porsche 911 Turbo Convertible
Environmental Impact
168.7 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).
217.9 kWh
BMW 650i Cabrio
168.7 kWh
217.9 kWh
Porsche 911 Turbo Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 5
335 g/mi (NEFZ)
CO2 Emissions
435 g/mi (NEFZ)
Practical Convenience
BMW 650i Cabrio
Porsche 911 Turbo Convertible
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
606 lb
9.9 cu ft
Trunk Volume
3 cu ft






No data
Cargo Volume (Seats Down)
No data













