Car comparison

BMW 6 Series Convertible (F12) 650ivsBMW M4 Convertible (F83) 3.0

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

New comparison

BMW 6 Series Convertible (F12)

650i

450 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2012-2015
VS

BMW M4 Convertible (F83)

3.0

431 hp2979 ccGasolineRWDManualTurbochargedCabriolet / convertible2014-2020

Comparison overview

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

Best choices

BMW 6 Series Convertible (F12) 650i

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    450 hp
    336 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Best estimated range
    737 km
    458 mi
  • Largest trunk
    300 L
  • Best overall score
    68/100
  • Best performance score
    79/100
  • Best practicality score
    45/100

BMW M4 Convertible (F83) 3.0

  • Lightest
    1,750 kg
    3,858 lb
  • Best power-to-weight
    246 hp/t
    184 kW/t
    4.1 kg/hp
  • Lowest combined fuel consumption
    9.1 L/100 km
    25.8 mpg US
    31.0 mpg UK
  • Lowest city consumption
    12.4 L/100 km
    19.0 mpg US
    22.8 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    213 g/km
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (F12)650iBMWM4 Convertible (F83)3.0
Power
450hp336kW
431hp321kW
Torque
650Nm479lb-ft
550Nm406lb-ft
Curb weight
1,980kg4,365lb
1,750kg3,858lb
Gross weight
2,480kg5,467lb
2,250kg4,960lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
61.6s99% target: 257 km/h / 160 mph
Calculated
61.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.5s
4.6s
0-200 km/h
16.3s
Calculated
16.5s
Calculated
0-60 mph
4.3s
Calculated
4.4s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
9.1L/100 km25.8mpg US31.0mpg UK
Fuel consumption city
13.3L/100 km17.7mpg US21.2mpg UK
12.4L/100 km19mpg US22.8mpg UK
Fuel consumption highway
7.3L/100 km32.2mpg US38.7mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
12.7s
Calculated
12.7s
Calculated
Power-to-weight
227hp/t169kW/t103hp/1000 lb
Calculated
246hp/t184kW/t112hp/1000 lb
Calculated
Torque-to-weight
328Nm/t220lb-ft/ton
Calculated
314Nm/t210lb-ft/ton
Calculated
Estimated range
737km458mi
Calculated
659km410mi
Calculated
Displacement
4,395cc268cu in
2,979cc182cu in
Length
4,894mm193in
4,671mm184in
Width
1,894mm75in
1,870mm74in
Height
1,365mm54in
1,386mm55in
Wheelbase
2,855mm112in
2,812mm111in
Front track
1,600mm63in
1,579mm62in
Rear track
1,665mm66in
1,603mm63in
Ground clearance
123mm5in
116mm5in
Trunk volume
300L
220L
Max trunk volume
350L
370L
Doors
2
2
Seats
4
4
Fuel tank
70L
60L
CO2 emissions
221g/km
213g/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.

BMW 6 Series Convertible (F12) 650iBMW M4 Convertible (F83) 3.0PowerTorque
  • BMW 6 Series Convertible (F12) 650i: Power / Torque
  • BMW M4 Convertible (F83) 3.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (F12)650i5,500 rpm2,000-4,500 rpm5,750 rpm
BMWM4 Convertible (F83)3.05,500-7,300 rpm1,850-5,500 rpm7,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (F12)650iBMWM4 Convertible (F83)3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
4.4 s
0-100 km/h
0-62 mph
4.5 s
4.6 s
0-200 km/h
0-124 mph
16.3 s
16.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
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
8.2 s
8.3 s
1000 ft
305 m
10.6 s
10.7 s
1/4 mile
402 m
12.7 s
12.7 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
180 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
450 hp
336 kW
BMWM4 Convertible (F83)3.0
431 hp
321 kW

BMW 6 Series Convertible (F12) 650i has 19 hp more than BMW M4 Convertible (F83) 3.0.

The biggest power difference is between BMW M4 Convertible (F83) 3.0 and BMW 6 Series Convertible (F12) 650i: 19 hp (14 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
650 Nm
479 lb-ft
BMWM4 Convertible (F83)3.0
550 Nm
406 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
1,980 kg
4,365 lb
BMWM4 Convertible (F83)3.0
1,750 kg
3,858 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (F83)3.0
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
BMW6 Series Convertible (F12)650i4.5 s
BMWM4 Convertible (F83)3.04.6 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (F12) 650i and BMW M4 Convertible (F83) 3.0: 0.1 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM4 Convertible (F83)3.0
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp
BMWM4 Convertible (F83)3.0
246 hp/t
184 kW/t
4.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
737 km
458 mi
BMWM4 Convertible (F83)3.0
659 km
410 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (F12)650i
450 hp
336 kW
4.5 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (F83)3.0
431 hp
321 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
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.5 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
BMWM4 Convertible (F83)3.0
Power
431 hp
321 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
220 L
7.8 cu ft
Length
4,671 mm
183.9 in
Height
1,386 mm
54.6 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
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM4 Convertible (F83)3.0
Power
431 hp
321 kW
0-100 km/h4.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

BMW 6 Series Convertible (F12) 650i 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
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.5 s
BMWM4 Convertible (F83)3.0
9.1 L/100 km
25.8 mpg US
31.0 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
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM4 Convertible (F83)3.0
246 hp/t
184 kW/t
4.1 kg/hp
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (F12)650iBMWM4 Convertible (F83)3.0
Power
450 hp
336 kW
431 hp
321 kW
Torque
650 Nm
479 lb-ft
550 Nm
406 lb-ft
Acceleration
4.5 s
4.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,980 kg
4,365 lb
1,750 kg
3,858 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,365 mm
53.7 in
Doors/seats
2 doors
4 seats
Trunk
220 L
7.8 cu ft
Length
4,671 mm
183.9 in
Height
1,386 mm
54.6 in
Range score
737 km
458 mi
659 km
410 mi
CO2 score
221 g/km
213 g/km
Trunk score
300 L
10.6 cu ft
220 L
7.8 cu ft
Power-to-weight score
227 hp/t
169 kW/t
4.4 kg/hp
246 hp/t
184 kW/t
4.1 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
VehicleBMW 6 Series Convertible (F12) 650iBMW M4 Convertible (F83) 3.0
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK9.1 L/100 km25.8 mpg US31 mpg UK
Cost / 100 km16.63 LC100 km15.92 LC100 km
Cost / 100 mi26.76 LC100 mi25.63 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,365 L361 US gal300 UK gal
Annual fuel cost2,494 LC/year2,389 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (F12) 650i

  • Has 19 hp more
  • Has 100 Nm more
  • Is 0.1 s quicker from 0-100 km/h
  • Has 78 km (48 mi) more estimated range
  • Has 80 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

BMW M4 Convertible (F83) 3.0

  • Is 230 kg lighter
  • Uses 0.4 L/100 km less fuel
  • Has 19 hp/t better power-to-weight
  • Emits 8 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (F12) 650i
BMW M4 Convertible (F83) 3.0
Compare selected cars
2 vehicles selected

Popular comparisons

650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series Gran Coupe (F06)650i
3.0
Competition 3.0
VS
BMWM4 Convertible (F83)3.0vsBMWM4 Convertible (G83)Competition 3.0
650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series Convertible (E64)Facelift 2007650i
3.0
3.0
VS
BMWM4 Convertible (F83)3.0vsBMWM4 (F82)3.0
650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series Coupe (F13)650i
3.0
3.0
VS
BMWM4 Convertible (F83)3.0vsBMWM4 (G82)3.0
650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series Convertible (E64)650i
3.0
650i
VS
BMWM4 Convertible (F83)3.0vsBMW6 Series Convertible (F12)650i
650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series (E63)Facelift 2007650i
3.0
M240i
VS
BMWM4 Convertible (F83)3.0vsBMW2 Series Convertible (F23)M240i
650i
650i
VS
BMW6 Series Convertible (F12)650ivsBMW6 Series (E63)650i
3.0
6.2 V8
VS
BMWM4 Convertible (F83)3.0vsChevroletCamaro VI Convertible6.2 V8
BMW 6 Series Convertible (F12) 650i vs BMW M4 Convertible (F83) 3.0 - car comparison - FastVsFaster