Car comparison

BMW M4 Convertible (F83) 3.0vsBMW 6 Series Convertible (F12) 650i

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

New comparison

BMW M4 Convertible (F83)

3.0

431 hp2979 ccGasolineRWDDual-clutchTurbochargedCabriolet / convertible2014-2020
VS

BMW 6 Series Convertible (F12)

650i

450 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2012-2015

Comparison overview

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

Best choices

BMW M4 Convertible (F83) 3.0

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,790 kg
    3,946 lb
  • Best power-to-weight
    241 hp/t
    180 kW/t
    4.2 kg/hp
  • Lowest combined fuel consumption
    8.7 L/100 km
    27.0 mpg US
    32.5 mpg UK
  • Lowest city consumption
    11.5 L/100 km
    20.5 mpg US
    24.6 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest CO2 emissions
    203 g/km
  • Best economy score
    83/100

BMW 6 Series Convertible (F12) 650i

  • 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

Specification comparison

Specification comparison
ModelBMWM4 Convertible (F83)3.0BMW6 Series Convertible (F12)650i
Power
431hp321kW
450hp336kW
Torque
550Nm406lb-ft
650Nm479lb-ft
Curb weight
1,790kg3,946lb
1,980kg4,365lb
Gross weight
2,250kg4,960lb
2,480kg5,467lb
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
59.7s99% target: 257 km/h / 160 mph
Calculated
61.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.4s
4.5s
0-200 km/h
15.8s
Calculated
16.3s
Calculated
0-60 mph
4.2s
Calculated
4.3s
Calculated
Fuel consumption
8.7L/100 km27mpg US32.5mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption city
11.5L/100 km20.5mpg US24.6mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
7.3L/100 km32.2mpg US38.7mpg UK
Quarter mile
12.5s
Calculated
12.7s
Calculated
Power-to-weight
241hp/t180kW/t109hp/1000 lb
Calculated
227hp/t169kW/t103hp/1000 lb
Calculated
Torque-to-weight
307Nm/t206lb-ft/ton
Calculated
328Nm/t220lb-ft/ton
Calculated
Estimated range
690km429mi
Calculated
737km458mi
Calculated
Displacement
2,979cc182cu in
4,395cc268cu in
Length
4,671mm184in
4,894mm193in
Width
1,870mm74in
1,894mm75in
Height
1,386mm55in
1,365mm54in
Wheelbase
2,812mm111in
2,855mm112in
Front track
1,579mm62in
1,600mm63in
Rear track
1,603mm63in
1,665mm66in
Ground clearance
116mm5in
123mm5in
Trunk volume
220L
300L
Max trunk volume
370L
350L
Doors
2
2
Seats
4
4
Fuel tank
60L
70L
CO2 emissions
203g/km
221g/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 M4 Convertible (F83) 3.0BMW 6 Series Convertible (F12) 650iPowerTorque
  • BMW M4 Convertible (F83) 3.0: Power / Torque
  • BMW 6 Series Convertible (F12) 650i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWM4 Convertible (F83)3.05,500-7,300 rpm1,850-5,500 rpm7,550 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
MetricBMWM4 Convertible (F83)3.0BMW6 Series Convertible (F12)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.3 s
0-100 km/h
0-62 mph
4.4 s
4.5 s
0-200 km/h
0-124 mph
15.8 s
16.3 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
2.0 s
2.1 s
330 ft
101 m
5.4 s
5.5 s
1/8 mile
201 m
8.2 s
8.2 s
1000 ft
305 m
10.5 s
10.6 s
1/4 mile
402 m
12.5 s
12.7 s
Trap speed
1/4 mile
402 m
182 km/h
113 mph
180 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
BMWM4 Convertible (F83)3.0
431 hp
321 kW
BMW6 Series Convertible (F12)650i
450 hp
336 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
BMWM4 Convertible (F83)3.0
550 Nm
406 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
BMWM4 Convertible (F83)3.0
1,790 kg
3,946 lb
BMW6 Series Convertible (F12)650i
1,980 kg
4,365 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMWM4 Convertible (F83)3.0
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
BMWM4 Convertible (F83)3.04.4 s
BMW6 Series Convertible (F12)650i4.5 s

Although BMW 6 Series Convertible (F12) 650i has more power, BMW M4 Convertible (F83) 3.0 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW M4 Convertible (F83) 3.0 and BMW 6 Series Convertible (F12) 650i: 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
BMWM4 Convertible (F83)3.0
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

The biggest fuel consumption difference is between BMW M4 Convertible (F83) 3.0 and BMW 6 Series Convertible (F12) 650i: 0.8 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWM4 Convertible (F83)3.0
241 hp/t
180 kW/t
4.2 kg/hp
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp

Estimated range comparison

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

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

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWM4 Convertible (F83)3.0
431 hp
321 kW
4.4 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (F12)650i
450 hp
336 kW
4.5 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
BMWM4 Convertible (F83)3.0
Power
431 hp
321 kW
0-100 km/h4.4 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
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

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
BMWM4 Convertible (F83)3.0
Power
431 hp
321 kW
0-100 km/h4.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
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

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
BMWM4 Convertible (F83)3.0
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.4 s
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.5 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
BMWM4 Convertible (F83)3.0
241 hp/t
180 kW/t
4.2 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
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

Detailed score breakdown

Detailed score breakdown
VehicleBMWM4 Convertible (F83)3.0BMW6 Series Convertible (F12)650i
Power
431 hp
321 kW
450 hp
336 kW
Torque
550 Nm
406 lb-ft
650 Nm
479 lb-ft
Acceleration
4.4 s
4.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,790 kg
3,946 lb
1,980 kg
4,365 lb
Fuel consumption
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Practicality
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
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
690 km
429 mi
737 km
458 mi
CO2 score
203 g/km
221 g/km
Trunk score
220 L
7.8 cu ft
300 L
10.6 cu ft
Power-to-weight score
241 hp/t
180 kW/t
4.2 kg/hp
227 hp/t
169 kW/t
4.4 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 M4 Convertible (F83) 3.0BMW 6 Series Convertible (F12) 650i
Consumption8.7 L/100 km27 mpg US32.5 mpg UK9.5 L/100 km24.8 mpg US29.7 mpg UK
Cost / 100 km15.22 LC100 km16.63 LC100 km
Cost / 100 mi24.50 LC100 mi26.76 LC100 mi
Annual fuel used1,305 L345 US gal287 UK gal1,425 L376 US gal313 UK gal
Annual fuel cost2,284 LC/year2,494 LC/year

Head-to-head comparisons

BMW M4 Convertible (F83) 3.0

  • Is 190 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 0.8 L/100 km less fuel
  • Has 14 hp/t better power-to-weight
  • Emits 18 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Smallest trunk

BMW 6 Series Convertible (F12) 650i

  • Has 19 hp more
  • Has 100 Nm more
  • Has 47 km (29 mi) more estimated range
  • Has 80 L more trunk volume

Pros

  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW M4 Convertible (F83) 3.0
BMW 6 Series Convertible (F12) 650i
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