The Comparative Analysis :

Porsche 911 Turbo Convertible S PDK (10 - 13) vs. BMW 640i Convertible Steptronic (13 - 14)

€ 184,500
Porsche 911 Turbo Convertible S PDK (10 - 13) Porsche 911 Turbo Convertible S
€ 83,900
 BMW 640i Convertible Steptronic (13 - 14) BMW 640i Cabrio
€ 184,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 83,900

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The Porsche 911 Turbo Convertible S is significantly smaller in every dimension. It's 17.5 inches shorter, 1.7 inches narrower and 2.6 inches lower than the BMW 640i Cabrio.
Porsche 911 Turbo Convertible S
BMW 640i Cabrio
51.2
Blueprint Porsche 911 Turbo Convertible S PDK (10 - 13)
72.9
80.8
53.7
Blueprint BMW 640i Convertible Steptronic (13 - 14)
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
Blueprint Porsche 911 Turbo Convertible S PDK (10 - 13)
92.5
175.2
Blueprint BMW 640i Convertible Steptronic (13 - 14)
112.4
192.7
175.2 in
Length
192.7 in
92.5 in
Wheelbase
112.4 in

Vehicle Weight

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
3825 lb
Curb Weight
4222 lb
4431 lb
Gross Vehicle
Weight
5049 lb
Porsche 911 Turbo Convertible S PDK (10 - 13)
Weight Difference:
397 lb
9.4 %
BMW 640i Convertible Steptronic (13 - 14)

General

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
997
Generation
F12
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
7-speed dual clutch transmission
Transmission
8-speed automatic transmission

Engine

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
6-cylinder boxer gasoline engine with two tur­bo­chargers (bi­turbo)
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
523 hp
at 6250 rpm
Power
316 hp
at 5800 rpm
Porsche 911 Turbo Convertible S
523 hp
316 hp
BMW 640i Cabrio
516 lb‑ft
at 2100 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
Porsche 911 Turbo Convertible S
516 lb‑ft
332 lb‑ft
BMW 640i Cabrio

Performance

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
196 mph
Maximum Speed
155 mph
3.4 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph 62
mph

154 ft
0.000 sec

Porsche 911 Turbo Convertible S

62 mph 62
mph

259 ft
0.000 sec

BMW 640i Cabrio

▶ REPLAY
7.31 lb/hp
Weight-to-Power Ratio
13.36 lb/hp
Porsche 911 Turbo Convertible S
7.31 lb/hp
13.36 lb/hp
BMW 640i Cabrio

Fuel Economy / Emissions

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
Fuel Economy
20 mpg
combined
30 mpg
Porsche 911 Turbo Convertible S
20 mpg
30 mpg
BMW 640i Cabrio
14 mpg
city
22 mpg
29 mpg
highway
No data
Kraftstoffanzeige
17.7 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
362 mi
Range
557 mi
Porsche 911 Turbo Convertible S
362 mi
557 mi
BMW 640i Cabrio
Environmental Impact
217.9 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).
147.7 kWh
Porsche 911 Turbo Convertible S
217.9 kWh
147.7 kWh
BMW 640i Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
435 g/mi (NEFZ)
CO2 Emissions
291 g/mi (NEFZ)

Practical Convenience

Porsche 911 Turbo Convertible S
BMW 640i Cabrio
2
Doors
2
4
No. of Seats
4
606 lb
Maximum Payload
827 lb
3 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data