Car comparison

BMW M8 Convertible (F91) 4.4 V8vsBMW M4 Convertible (F83) Competition 3.0

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

New comparison

BMW M8 Convertible (F91)

4.4 V8

600 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2022
VS

BMW M4 Convertible (F83)

Competition 3.0

450 hp2979 ccGasolineRWDDual-clutchTurbochargedCabriolet / convertible2016-2020

Comparison overview

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

Best choices

BMW M8 Convertible (F91) 4.4 V8

  • Quickest 0-100 km/h
    3.4 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    600 hp
    447 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Best power-to-weight
    299 hp/t
    223 kW/t
    3.4 kg/hp
  • Largest trunk
    350 L
  • Best overall score
    75/100
  • Best performance score
    87/100
  • Best practicality score
    48/100

BMW M4 Convertible (F83) Competition 3.0

  • Lightest
    1,790 kg
    3,946 lb
  • 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 estimated range
    690 km
    429 mi
  • Best economy score
    83/100

Specification comparison

Specification comparison
ModelBMWM8 Convertible (F91)4.4 V8BMWM4 Convertible (F83)Competition 3.0
Power
600hp447kW
450hp336kW
Torque
750Nm553lb-ft
550Nm406lb-ft
Curb weight
2,010kg4,431lb
1,790kg3,946lb
Gross weight
2,440kg5,379lb
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
39.2s99% target: 257 km/h / 160 mph
Calculated
57.4s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.4s
4.3s
0-200 km/h
11.3s
15.4s
Calculated
0-60 mph
3.2s
Calculated
4.1s
Calculated
Fuel consumption
10.8L/100 km21.8mpg US26.2mpg UK
8.7L/100 km27mpg US32.5mpg UK
Fuel consumption city
15.2L/100 km15.5mpg US18.6mpg UK
11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption highway
8.2L/100 km28.7mpg US34.4mpg UK
7.1L/100 km33.1mpg US39.8mpg UK
Quarter mile
11.3s
Calculated
12.4s
Calculated
Power-to-weight
299hp/t223kW/t135hp/1000 lb
Calculated
251hp/t187kW/t114hp/1000 lb
Calculated
Torque-to-weight
373Nm/t250lb-ft/ton
Calculated
307Nm/t206lb-ft/ton
Calculated
Estimated range
630km391mi
Calculated
690km429mi
Calculated
Displacement
4,395cc268cu in
2,979cc182cu in
Length
4,867mm192in
4,671mm184in
Width
1,907mm75in
1,870mm74in
Height
1,353mm53in
1,392mm55in
Wheelbase
2,827mm111in
2,812mm111in
Front track
1,627mm64in
1,579mm62in
Rear track
1,632mm64in
1,604mm63in
Ground clearance-
119mm5in
Trunk volume-
220L
Max trunk volume
350L
370L
Doors
2
2
Seats
4
4
Fuel tank
68L
60L
CO2 emissions
246g/km
203g/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 M8 Convertible (F91) 4.4 V8BMW M4 Convertible (F83) Competition 3.0PowerTorque
  • BMW M8 Convertible (F91) 4.4 V8: Power / Torque
  • BMW M4 Convertible (F83) Competition 3.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWM8 Convertible (F91)4.4 V86,000 rpm1,800-5,600 rpm6,250 rpm
BMWM4 Convertible (F83)Competition 3.07,000 rpm1,850-5,500 rpm7,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWM8 Convertible (F91)4.4 V8BMWM4 Convertible (F83)Competition 3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.2 s
4.1 s
0-100 km/h
0-62 mph
3.4 s
4.3 s
0-200 km/h
0-124 mph
11.3 s
15.4 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
1.9 s
2.0 s
330 ft
101 m
4.9 s
5.4 s
1/8 mile
201 m
7.4 s
8.1 s
1000 ft
305 m
9.5 s
10.4 s
1/4 mile
402 m
11.3 s
12.4 s
Trap speed
1/4 mile
402 m
200 km/h
124 mph
183 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)4.4 V8
600 hp
447 kW
BMWM4 Convertible (F83)Competition 3.0
450 hp
336 kW

BMW M8 Convertible (F91) 4.4 V8 has 150 hp more than BMW M4 Convertible (F83) Competition 3.0.

The biggest power difference is between BMW M4 Convertible (F83) Competition 3.0 and BMW M8 Convertible (F91) 4.4 V8: 150 hp (112 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)4.4 V8
750 Nm
553 lb-ft
BMWM4 Convertible (F83)Competition 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
BMWM8 Convertible (F91)4.4 V8
2,010 kg
4,431 lb
BMWM4 Convertible (F83)Competition 3.0
1,790 kg
3,946 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)4.4 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (F83)Competition 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
BMWM8 Convertible (F91)4.4 V83.4 s
BMWM4 Convertible (F83)Competition 3.04.3 s

The biggest 0-100 km/h difference is between BMW M8 Convertible (F91) 4.4 V8 and BMW M4 Convertible (F83) Competition 3.0: 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
BMWM8 Convertible (F91)4.4 V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
BMWM4 Convertible (F83)Competition 3.0
8.7 L/100 km
27.0 mpg US
32.5 mpg UK

The biggest fuel consumption difference is between BMW M4 Convertible (F83) Competition 3.0 and BMW M8 Convertible (F91) 4.4 V8: 2.1 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
BMWM8 Convertible (F91)4.4 V8
299 hp/t
223 kW/t
3.3 kg/hp
BMWM4 Convertible (F83)Competition 3.0
251 hp/t
187 kW/t
4.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)4.4 V8
630 km
391 mi
BMWM4 Convertible (F83)Competition 3.0
690 km
429 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWM8 Convertible (F91)4.4 V8
600 hp
447 kW
3.4 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (F83)Competition 3.0
450 hp
336 kW
4.3 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
BMWM8 Convertible (F91)4.4 V8
Power
600 hp
447 kW
0-100 km/h3.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,867 mm
191.6 in
Height
1,353 mm
53.3 in
BMWM4 Convertible (F83)Competition 3.0
Power
450 hp
336 kW
0-100 km/h4.3 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
1,392 mm
54.8 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
BMWM8 Convertible (F91)4.4 V8
Power
600 hp
447 kW
0-100 km/h3.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
BMWM4 Convertible (F83)Competition 3.0
Power
450 hp
336 kW
0-100 km/h4.3 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

BMW M8 Convertible (F91) 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
BMWM8 Convertible (F91)4.4 V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
3.4 s
BMWM4 Convertible (F83)Competition 3.0
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.3 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
BMWM8 Convertible (F91)4.4 V8
299 hp/t
223 kW/t
3.4 kg/hp
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
BMWM4 Convertible (F83)Competition 3.0
251 hp/t
187 kW/t
4.0 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWM8 Convertible (F91)4.4 V8BMWM4 Convertible (F83)Competition 3.0
Power
600 hp
447 kW
450 hp
336 kW
Torque
750 Nm
553 lb-ft
550 Nm
406 lb-ft
Acceleration
3.4 s
4.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,010 kg
4,431 lb
1,790 kg
3,946 lb
Fuel consumption
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,867 mm
191.6 in
Height
1,353 mm
53.3 in
Doors/seats
2 doors
4 seats
Trunk
220 L
7.8 cu ft
Length
4,671 mm
183.9 in
Height
1,392 mm
54.8 in
Range score
630 km
391 mi
690 km
429 mi
CO2 score
246 g/km
203 g/km
Trunk score
350 L
12.4 cu ft
220 L
7.8 cu ft
Power-to-weight score
299 hp/t
223 kW/t
3.4 kg/hp
251 hp/t
187 kW/t
4.0 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 M8 Convertible (F91) 4.4 V8BMW M4 Convertible (F83) Competition 3.0
Consumption10.8 L/100 km21.8 mpg US26.2 mpg UK8.7 L/100 km27 mpg US32.5 mpg UK
Cost / 100 km18.90 LC100 km15.22 LC100 km
Cost / 100 mi30.42 LC100 mi24.50 LC100 mi
Annual fuel used1,620 L428 US gal356 UK gal1,305 L345 US gal287 UK gal
Annual fuel cost2,835 LC/year2,284 LC/year

Head-to-head comparisons

BMW M8 Convertible (F91) 4.4 V8

  • Has 150 hp more
  • Has 200 Nm more
  • Is 0.9 s quicker from 0-100 km/h
  • Has 47 hp/t better power-to-weight
  • Has 130 L more trunk volume

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 M4 Convertible (F83) Competition 3.0

  • Is 220 kg lighter
  • Uses 2.1 L/100 km less fuel
  • Has 60 km (37 mi) more estimated range
  • Emits 43 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW M8 Convertible (F91) 4.4 V8
BMW M4 Convertible (F83) Competition 3.0
Compare selected cars
2 vehicles selected

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