Car comparison

Alpina B6 Cabrio (F12) 4.4 V8vsPorsche 911 Cabriolet (991) Turbo 3.8

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

Alpina B6 Cabrio (F12)

4.4 V8

540 hp4395 ccGasolineRWDAutomaticTwin-turboCabriolet / convertible2012-2015
VS

Porsche 911 Cabriolet (991)

Turbo 3.8

520 hp3800 ccGasolineAWDDual-clutchTwin-turboCabriolet / convertible2013-2016

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

Alpina B6 Cabrio (F12) 4.4 V8

  • Fastest top speed
    317 km/h
    197 mph
  • Most powerful
    540 hp
    403 kW
  • Highest torque
    730 Nm
    538 lb-ft
  • Lowest combined fuel consumption
    9.6 L/100 km
    24.5 mpg US
    29.4 mpg UK
  • Lowest city consumption
    13.2 L/100 km
    17.8 mpg US
    21.4 mpg UK
  • Lowest highway consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Lowest CO2 emissions
    224 g/km
  • Best estimated range
    729 km
    453 mi
  • Largest trunk
    300 L
  • Best economy score
    81/100
  • Best practicality score
    45/100

Specification comparison

Specification comparison
ModelAlpinaB6 Cabrio (F12)4.4 V8Porsche911 Cabriolet (991)Turbo 3.8
Power
540hp403kW
520hp388kW
Torque
730Nm538lb-ft
660Nm487lb-ft
Curb weight
2,020kg4,453lb
1,665kg3,671lb
Gross weight
2,430kg5,357lb
2,045kg4,508lb
Top speed
317 km/h
197 mph
315 km/h
196 mph
To 99% top speed
74.9s99% target: 314 km/h / 195 mph
Calculated
51.1s99% target: 312 km/h / 194 mph
Calculated
0-100 km/h
4.4s
3.5s
0-200 km/h
13.2s
Calculated
10.0s
Calculated
0-60 mph
4.2s
Calculated
3.3s
Calculated
Fuel consumption
9.6L/100 km24.5mpg US29.4mpg UK
9.9L/100 km23.8mpg US28.5mpg UK
Fuel consumption city
13.2L/100 km17.8mpg US21.4mpg UK
13.4L/100 km17.6mpg US21.1mpg UK
Fuel consumption highway
7.5L/100 km31.4mpg US37.7mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Quarter mile
12.3s
Calculated
11.2s
Calculated
Power-to-weight
267hp/t199kW/t121hp/1000 lb
Calculated
312hp/t233kW/t142hp/1000 lb
Calculated
Torque-to-weight
361Nm/t242lb-ft/ton
Calculated
396Nm/t265lb-ft/ton
Calculated
Estimated range
729km453mi
Calculated
687km427mi
Calculated
Displacement
4,395cc268cu in
3,800cc232cu in
Length
4,894mm193in
4,506mm177in
Width
1,894mm75in
1,880mm74in
Height
1,373mm54in
1,292mm51in
Wheelbase
2,855mm112in
2,450mm96in
Front track
1,594mm63in
1,541mm61in
Rear track
1,637mm64in
1,590mm63in
Trunk volume
300L
275L
Max trunk volume
350L
-
Doors
2
2
Seats
4
4
Fuel tank
70L
68L
CO2 emissions
224g/km
231g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

Alpina B6 Cabrio (F12) 4.4 V8Porsche 911 Cabriolet (991) Turbo 3.8PowerTorque
  • Alpina B6 Cabrio (F12) 4.4 V8: Power / Torque
  • Porsche 911 Cabriolet (991) Turbo 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AlpinaB6 Cabrio (F12)4.4 V85,200-6,250 rpm2,800-5,000 rpm6,500 rpm
Porsche911 Cabriolet (991)Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlpinaB6 Cabrio (F12)4.4 V8Porsche911 Cabriolet (991)Turbo 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
3.3 s
0-100 km/h
0-62 mph
4.4 s
3.5 s
0-200 km/h
0-124 mph
13.2 s
10.0 s
Top speed
317 km/h
197 mph
315 km/h
196 mph
Drag race simulation
60 ft
18 m
2.1 s
1.9 s
330 ft
101 m
5.5 s
5.0 s
1/8 mile
201 m
8.1 s
7.4 s
1000 ft
305 m
10.4 s
9.4 s
1/4 mile
402 m
12.3 s
11.2 s
Trap speed
1/4 mile
402 m
193 km/h
120 mph
212 km/h
132 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
540 hp
403 kW
Porsche911 Cabriolet (991)Turbo 3.8
520 hp
388 kW

Alpina B6 Cabrio (F12) 4.4 V8 has 20 hp more than Porsche 911 Cabriolet (991) Turbo 3.8.

The biggest power difference is between Porsche 911 Cabriolet (991) Turbo 3.8 and Alpina B6 Cabrio (F12) 4.4 V8: 20 hp (15 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
730 Nm
538 lb-ft
Porsche911 Cabriolet (991)Turbo 3.8
660 Nm
487 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
2,020 kg
4,453 lb
Porsche911 Cabriolet (991)Turbo 3.8
1,665 kg
3,671 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
317 km/h
197 mph
Porsche911 Cabriolet (991)Turbo 3.8
315 km/h
196 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V84.4 s
Porsche911 Cabriolet (991)Turbo 3.83.5 s

Although Alpina B6 Cabrio (F12) 4.4 V8 has more power, Porsche 911 Cabriolet (991) Turbo 3.8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (991) Turbo 3.8 and Alpina B6 Cabrio (F12) 4.4 V8: 0.9 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Porsche911 Cabriolet (991)Turbo 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
267 hp/t
199 kW/t
3.7 kg/hp
Porsche911 Cabriolet (991)Turbo 3.8
312 hp/t
233 kW/t
3.2 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
AlpinaB6 Cabrio (F12)4.4 V8
729 km
453 mi
Porsche911 Cabriolet (991)Turbo 3.8
687 km
427 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AlpinaB6 Cabrio (F12)4.4 V8
540 hp
403 kW
4.4 s
317 km/h
197 mph
Porsche911 Cabriolet (991)Turbo 3.8
520 hp
388 kW
3.5 s
315 km/h
196 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
AlpinaB6 Cabrio (F12)4.4 V8
Power
540 hp
403 kW
0-100 km/h4.4 s
Top speed
317 km/h
197 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,373 mm
54.1 in
Porsche911 Cabriolet (991)Turbo 3.8
Power
520 hp
388 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,506 mm
177.4 in
Height
1,292 mm
50.9 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
AlpinaB6 Cabrio (F12)4.4 V8
Power
540 hp
403 kW
0-100 km/h4.4 s
Top speed
317 km/h
197 mph
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Porsche911 Cabriolet (991)Turbo 3.8
Power
520 hp
388 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

Porsche 911 Cabriolet (991) Turbo 3.8 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
AlpinaB6 Cabrio (F12)4.4 V8
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
4.4 s
Porsche911 Cabriolet (991)Turbo 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
3.5 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
AlpinaB6 Cabrio (F12)4.4 V8
267 hp/t
199 kW/t
3.7 kg/hp
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Porsche911 Cabriolet (991)Turbo 3.8
312 hp/t
233 kW/t
3.2 kg/hp
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlpinaB6 Cabrio (F12)4.4 V8Porsche911 Cabriolet (991)Turbo 3.8
Power
540 hp
403 kW
520 hp
388 kW
Torque
730 Nm
538 lb-ft
660 Nm
487 lb-ft
Acceleration
4.4 s
3.5 s
Top speed
317 km/h
197 mph
315 km/h
196 mph
Lightness
2,020 kg
4,453 lb
1,665 kg
3,671 lb
Fuel consumption
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,373 mm
54.1 in
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,506 mm
177.4 in
Height
1,292 mm
50.9 in
Range score
729 km
453 mi
687 km
427 mi
CO2 score
224 g/km
231 g/km
Trunk score
300 L
10.6 cu ft
275 L
9.7 cu ft
Power-to-weight score
267 hp/t
199 kW/t
3.7 kg/hp
312 hp/t
233 kW/t
3.2 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleAlpina B6 Cabrio (F12) 4.4 V8Porsche 911 Cabriolet (991) Turbo 3.8
Consumption9.6 L/100 km24.5 mpg US29.4 mpg UK9.9 L/100 km23.8 mpg US28.5 mpg UK
Cost / 100 km16.80 LC100 km17.33 LC100 km
Cost / 100 mi27.04 LC100 mi27.88 LC100 mi
Annual fuel used1,440 L380 US gal317 UK gal1,485 L392 US gal327 UK gal
Annual fuel cost2,520 LC/year2,599 LC/year

Head-to-head comparisons

Alpina B6 Cabrio (F12) 4.4 V8

  • Has 20 hp more
  • Has 70 Nm more
  • Has 2 km/h (1 mph) higher top speed
  • Uses 0.3 L/100 km less fuel
  • Has 42 km (26 mi) more estimated range
  • Has 25 L more trunk volume
  • Emits 7 g/km less CO2

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest

Porsche 911 Cabriolet (991) Turbo 3.8

  • Is 355 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Has 45 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alpina B6 Cabrio (F12) 4.4 V8
Porsche 911 Cabriolet (991) Turbo 3.8
Compare selected cars
2 vehicles selected

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