The Comparative Analysis :

BMW 640d Convertible xDrive Steptronic (15 - 18) vs. Porsche 911 Carrera Convertible (12 - 15)

€ 99,300
BMW 640d Convertible xDrive Steptronic (15 - 18) BMW 640d Cabrio
€ 103,200
 Porsche 911 Carrera Convertible (12 - 15) Porsche 911 Carrera Convertible
€ 99,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 103,200

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

Vehicle Dimensions

The BMW 640d Cabrio is significantly bigger in every dimension. It's 15.9 inches longer, 3.4 inches wider and 2.6 inches taller than the Porsche 911 Carrera Convertible.
BMW 640d Cabrio
Porsche 911 Carrera Convertible
53.7
Blueprint BMW 640d Convertible xDrive Steptronic (15 - 18)
74.6
81.9
51.1
Blueprint Porsche 911 Carrera Convertible (12 - 15)
71.2
77.9
74.6 in
Width
71.2 in
81.9 in
Width Incl. Mirrors
77.9 in
53.7 in
Height
51.1 in
Blueprint BMW 640d Convertible xDrive Steptronic (15 - 18)
112.4
192.7
Blueprint Porsche 911 Carrera Convertible (12 - 15)
96.5
176.8
192.7 in
Length
176.8 in
112.4 in
Wheelbase
96.5 in

Vehicle Weight

BMW 640d Cabrio
Porsche 911 Carrera Convertible
4420 lb
Curb Weight
3362 lb
5379 lb
Gross Vehicle
Weight
4079 lb
BMW 640d Convertible xDrive Steptronic (15 - 18)
Weight Difference:
1058 lb
23.94 %
Porsche 911 Carrera Convertible (12 - 15)

General

BMW 640d Cabrio
Porsche 911 Carrera Convertible
F12
Generation
991
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed manual transmission

Engine

BMW 640d Cabrio
Porsche 911 Carrera Convertible
Straight-six diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
6-cylinder boxer gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
BMW N57
Engine Series
N57-D30
Engine Code
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3.4 L / 166 cu in
309 hp
at 4400 rpm
Power
345 hp
at 7400 rpm
BMW 640d Cabrio
309 hp
345 hp
Porsche 911 Carrera Convertible
465 lb‑ft
at 1500 rpm
Max. Torque
288 lb‑ft
at 5600 rpm
BMW 640d Cabrio
465 lb‑ft
288 lb‑ft
Porsche 911 Carrera Convertible

Performance

BMW 640d Cabrio
Porsche 911 Carrera Convertible
155 mph
Maximum Speed
178 mph
5.3 sec
Acceleration 0 to 62 mph
5 sec
62 mph 62
mph

243 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

226 ft
0.000 sec

Porsche 911 Carrera Convertible

▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
9.74 lb/hp
BMW 640d Cabrio
14.3 lb/hp
9.74 lb/hp
Porsche 911 Carrera Convertible

Fuel Economy / Emissions

BMW 640d Cabrio
Porsche 911 Carrera Convertible
Fuel Economy
41 mpg
combined
26 mpg
BMW 640d Cabrio
41 mpg
26 mpg
Porsche 911 Carrera Convertible
35 mpg
city
18 mpg
No data
highway
34 mpg
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
16.9 gal
Kraftstoffanzeige
750 mi
Range
432 mi
BMW 640d Cabrio
750 mi
432 mi
Porsche 911 Carrera Convertible
Environmental Impact
119.3 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).
174.3 kWh
BMW 640d Cabrio
119.3 kWh
174.3 kWh
Porsche 911 Carrera Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 5 / Euro 6
248 g/mi (NEFZ)
CO2 Emissions
349 g/mi (NEFZ)

Practical Convenience

BMW 640d Cabrio
Porsche 911 Carrera Convertible
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
717 lb
9.9 cu ft
Trunk Volume
4.1 cu ft
No data
Cargo Volume (Seats Down)
No data