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 ccGasolineRWDManualTurbochargedCabriolet / convertible2014-2020
VS

BMW 6 Series Convertible (F12)

650i

407 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2011-2012

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
    4.6 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    431 hp
    321 kW
  • 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 estimated range
    659 km
    410 mi
  • Best overall score
    65/100
  • Best performance score
    76/100
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelBMWM4 Convertible (F83)3.0BMW6 Series Convertible (F12)650i
Power
431hp321kW
407hp304kW
Torque
550Nm406lb-ft
600Nm443lb-ft
Curb weight
1,750kg3,858lb
1,985kg4,376lb
Gross weight
2,250kg4,960lb
2,465kg5,434lb
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
69.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.6s
4.9s
0-200 km/h
16.5s
Calculated
18.1s
Calculated
0-60 mph
4.4s
Calculated
4.7s
Calculated
Fuel consumption
9.1L/100 km25.8mpg US31.0mpg UK
11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption city
12.4L/100 km19mpg US22.8mpg UK
16.6L/100 km14.2mpg US17.0mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
12.7s
Calculated
13.1s
Calculated
Power-to-weight
246hp/t184kW/t112hp/1000 lb
Calculated
205hp/t153kW/t93hp/1000 lb
Calculated
Torque-to-weight
314Nm/t210lb-ft/ton
Calculated
302Nm/t202lb-ft/ton
Calculated
Estimated range
659km410mi
Calculated
609km378mi
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
213g/km
267g/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)650i5,500-6,400 rpm1,750-4,500 rpm6,650 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
4.4 s
4.7 s
0-100 km/h
0-62 mph
4.6 s
4.9 s
0-200 km/h
0-124 mph
16.5 s
18.1 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
5.6 s
1/8 mile
201 m
8.3 s
8.5 s
1000 ft
305 m
10.7 s
11.0 s
1/4 mile
402 m
12.7 s
13.1 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
175 km/h
109 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
407 hp
304 kW

BMW M4 Convertible (F83) 3.0 has 24 hp more than BMW 6 Series Convertible (F12) 650i.

The biggest power difference is between BMW 6 Series Convertible (F12) 650i and BMW M4 Convertible (F83) 3.0: 24 hp (18 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
600 Nm
443 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
1,750 kg
3,858 lb
BMW6 Series Convertible (F12)650i
1,985 kg
4,376 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)3.04.6 s
BMW6 Series Convertible (F12)650i4.9 s

The biggest 0-100 km/h difference is between BMW M4 Convertible (F83) 3.0 and BMW 6 Series Convertible (F12) 650i: 0.3 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
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
BMW6 Series Convertible (F12)650i
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

The biggest fuel consumption difference is between BMW M4 Convertible (F83) 3.0 and BMW 6 Series Convertible (F12) 650i: 2.4 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
246 hp/t
184 kW/t
4.1 kg/hp
BMW6 Series Convertible (F12)650i
205 hp/t
153 kW/t
4.9 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
659 km
410 mi
BMW6 Series Convertible (F12)650i
609 km
378 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
4.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (F12)650i
407 hp
304 kW
4.9 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/h4.6 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
BMW6 Series Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h4.9 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/h4.6 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
BMW6 Series Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

BMW M4 Convertible (F83) 3.0 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
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
4.6 s
BMW6 Series Convertible (F12)650i
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
4.9 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
246 hp/t
184 kW/t
4.1 kg/hp
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
BMW6 Series Convertible (F12)650i
205 hp/t
153 kW/t
4.9 kg/hp
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWM4 Convertible (F83)3.0BMW6 Series Convertible (F12)650i
Power
431 hp
321 kW
407 hp
304 kW
Torque
550 Nm
406 lb-ft
600 Nm
443 lb-ft
Acceleration
4.6 s
4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,750 kg
3,858 lb
1,985 kg
4,376 lb
Fuel consumption
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
11.5 L/100 km
20.5 mpg US
24.6 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
659 km
410 mi
609 km
378 mi
CO2 score
213 g/km
267 g/km
Trunk score
220 L
7.8 cu ft
300 L
10.6 cu ft
Power-to-weight score
246 hp/t
184 kW/t
4.1 kg/hp
205 hp/t
153 kW/t
4.9 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
Consumption9.1 L/100 km25.8 mpg US31 mpg UK11.5 L/100 km20.5 mpg US24.6 mpg UK
Cost / 100 km15.92 LC100 km20.13 LC100 km
Cost / 100 mi25.63 LC100 mi32.39 LC100 mi
Annual fuel used1,365 L361 US gal300 UK gal1,725 L456 US gal379 UK gal
Annual fuel cost2,389 LC/year3,019 LC/year

Head-to-head comparisons

BMW M4 Convertible (F83) 3.0

  • Has 24 hp more
  • Is 235 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 2.4 L/100 km less fuel
  • Has 41 hp/t better power-to-weight
  • Has 51 km (31 mi) more estimated range
  • Emits 54 g/km less CO2

Pros

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

Cons

  • Smallest trunk

BMW 6 Series Convertible (F12) 650i

  • Has 50 Nm more
  • Has 80 L more trunk volume

Pros

  • Highest torque
  • Largest trunk

Cons

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