Car comparison

Alpina B6 Cabrio (F12) 4.4 V8vsBMW 6 Series Convertible (F12) 650i

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

BMW 6 Series Convertible (F12)

650i

450 hp4395 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2012-2015

Comparison overview

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

Best choices

Alpina B6 Cabrio (F12) 4.4 V8

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    317 km/h
    197 mph
  • Most powerful
    540 hp
    403 kW
  • Highest torque
    730 Nm
    538 lb-ft
  • Best power-to-weight
    267 hp/t
    199 kW/t
    3.7 kg/hp
  • Largest trunk
    300 L
  • Best overall score
    74/100
  • Best performance score
    88/100
  • Best practicality score
    45/100

BMW 6 Series Convertible (F12) 650i

  • Lightest
    1,940 kg
    4,277 lb
  • Lowest combined fuel consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest city consumption
    12.8 L/100 km
    18.4 mpg US
    22.1 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest CO2 emissions
    214 g/km
  • Best estimated range
    761 km
    473 mi
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelAlpinaB6 Cabrio (F12)4.4 V8BMW6 Series Convertible (F12)650i
Power
540hp403kW
450hp336kW
Torque
730Nm538lb-ft
650Nm479lb-ft
Curb weight
2,020kg4,453lb
1,940kg4,277lb
Gross weight
2,430kg5,357lb
2,420kg5,335lb
Top speed
317 km/h
197 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
74.9s99% target: 314 km/h / 195 mph
Calculated
62.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.4s
4.6s
0-200 km/h
13.2s
Calculated
16.6s
Calculated
0-60 mph
4.2s
Calculated
4.4s
Calculated
Fuel consumption
9.6L/100 km24.5mpg US29.4mpg UK
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption city
13.2L/100 km17.8mpg US21.4mpg UK
12.8L/100 km18.4mpg US22.1mpg UK
Fuel consumption highway
7.5L/100 km31.4mpg US37.7mpg UK
7.1L/100 km33.1mpg US39.8mpg UK
Quarter mile
12.3s
Calculated
12.7s
Calculated
Power-to-weight
267hp/t199kW/t121hp/1000 lb
Calculated
232hp/t173kW/t105hp/1000 lb
Calculated
Torque-to-weight
361Nm/t242lb-ft/ton
Calculated
335Nm/t224lb-ft/ton
Calculated
Estimated range
729km453mi
Calculated
761km473mi
Calculated
Displacement
4,395cc268cu in
4,395cc268cu in
Length
4,894mm193in
4,894mm193in
Width
1,894mm75in
1,894mm75in
Height
1,373mm54in
1,365mm54in
Wheelbase
2,855mm112in
2,855mm112in
Front track
1,594mm63in
1,600mm63in
Rear track
1,637mm64in
1,665mm66in
Ground clearance-
123mm5in
Trunk volume
300L
300L
Max trunk volume
350L
350L
Doors
2
2
Seats
4
4
Fuel tank
70L
70L
CO2 emissions
224g/km
214g/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 V8BMW 6 Series Convertible (F12) 650iPowerTorque
  • Alpina B6 Cabrio (F12) 4.4 V8: Power / Torque
  • BMW 6 Series Convertible (F12) 650i: 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
BMW6 Series Convertible (F12)650i5,500 rpm2,000-4,500 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlpinaB6 Cabrio (F12)4.4 V8BMW6 Series Convertible (F12)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.4 s
0-100 km/h
0-62 mph
4.4 s
4.6 s
0-200 km/h
0-124 mph
13.2 s
16.6 s
Top speed
317 km/h
197 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.5 s
5.5 s
1/8 mile
201 m
8.1 s
8.3 s
1000 ft
305 m
10.4 s
10.7 s
1/4 mile
402 m
12.3 s
12.7 s
Trap speed
1/4 mile
402 m
193 km/h
120 mph
179 km/h
111 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
BMW6 Series Convertible (F12)650i
450 hp
336 kW

Alpina B6 Cabrio (F12) 4.4 V8 has 90 hp more than BMW 6 Series Convertible (F12) 650i.

The biggest power difference is between BMW 6 Series Convertible (F12) 650i and Alpina B6 Cabrio (F12) 4.4 V8: 90 hp (67 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
BMW6 Series Convertible (F12)650i
650 Nm
479 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
BMW6 Series Convertible (F12)650i
1,940 kg
4,277 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
BMW6 Series Convertible (F12)650i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
BMW6 Series Convertible (F12)650i4.6 s

The biggest 0-100 km/h difference is between Alpina B6 Cabrio (F12) 4.4 V8 and BMW 6 Series Convertible (F12) 650i: 0.2 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
BMW6 Series Convertible (F12)650i
9.2 L/100 km
25.6 mpg US
30.7 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
BMW6 Series Convertible (F12)650i
232 hp/t
173 kW/t
4.3 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
BMW6 Series Convertible (F12)650i
761 km
473 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
BMW6 Series Convertible (F12)650i
450 hp
336 kW
4.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,365 mm
53.7 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
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Alpina B6 Cabrio (F12) 4.4 V8 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
BMW6 Series Convertible (F12)650i
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
4.6 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
BMW6 Series Convertible (F12)650i
232 hp/t
173 kW/t
4.3 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlpinaB6 Cabrio (F12)4.4 V8BMW6 Series Convertible (F12)650i
Power
540 hp
403 kW
450 hp
336 kW
Torque
730 Nm
538 lb-ft
650 Nm
479 lb-ft
Acceleration
4.4 s
4.6 s
Top speed
317 km/h
197 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,020 kg
4,453 lb
1,940 kg
4,277 lb
Fuel consumption
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
9.2 L/100 km
25.6 mpg US
30.7 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
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,365 mm
53.7 in
Range score
729 km
453 mi
761 km
473 mi
CO2 score
224 g/km
214 g/km
Trunk score
300 L
10.6 cu ft
300 L
10.6 cu ft
Power-to-weight score
267 hp/t
199 kW/t
3.7 kg/hp
232 hp/t
173 kW/t
4.3 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 V8BMW 6 Series Convertible (F12) 650i
Consumption9.6 L/100 km24.5 mpg US29.4 mpg UK9.2 L/100 km25.6 mpg US30.7 mpg UK
Cost / 100 km16.80 LC100 km16.10 LC100 km
Cost / 100 mi27.04 LC100 mi25.91 LC100 mi
Annual fuel used1,440 L380 US gal317 UK gal1,380 L365 US gal304 UK gal
Annual fuel cost2,520 LC/year2,415 LC/year

Head-to-head comparisons

Alpina B6 Cabrio (F12) 4.4 V8

  • Has 90 hp more
  • Has 80 Nm more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 57 km/h (35 mph) higher top speed
  • Has 35 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

BMW 6 Series Convertible (F12) 650i

  • Is 80 kg lighter
  • Uses 0.4 L/100 km less fuel
  • Has 32 km (20 mi) more estimated range
  • Emits 10 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alpina B6 Cabrio (F12) 4.4 V8
BMW 6 Series Convertible (F12) 650i
Compare selected cars
2 vehicles selected

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