Car comparison

BMW M8 Convertible (F91) Competition 4.4 V8vsBMW M4 Convertible (G83) Competition 3.0

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

New comparison

BMW M8 Convertible (F91)

Competition 4.4 V8

625 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2022
VS

BMW M4 Convertible (G83)

Competition 3.0

510 hp2993 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2021-2024

Comparison overview

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

Best choices

BMW M8 Convertible (F91) Competition 4.4 V8

  • Quickest 0-100 km/h
    3.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    625 hp
    466 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Best power-to-weight
    311 hp/t
    232 kW/t
    3.2 kg/hp
  • Best estimated range
    630 km
    391 mi
  • Largest trunk
    350 L
  • Best overall score
    75/100
  • Best performance score
    87/100
  • Best practicality score
    48/100

Specification comparison

Specification comparison
ModelBMWM8 Convertible (F91)Competition 4.4 V8BMWM4 Convertible (G83)Competition 3.0
Power
625hp466kW
510hp380kW
Torque
750Nm553lb-ft
650Nm479lb-ft
Curb weight
2,010kg4,431lb
1,920kg4,233lb
Gross weight
2,440kg5,379lb
2,345kg5,170lb
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
39.0s99% target: 257 km/h / 160 mph
Calculated
49.1s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.3s
3.7s
0-200 km/h
11.1s
13.2s
Calculated
0-60 mph
3.1s
Calculated
3.5s
Calculated
Fuel consumption
10.8L/100 km21.8mpg US26.2mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Fuel consumption city
15.2L/100 km15.5mpg US18.6mpg UK
-
Fuel consumption highway
8.3L/100 km28.3mpg US34.0mpg UK
-
Quarter mile
11.2s
Calculated
11.8s
Calculated
Power-to-weight
311hp/t232kW/t141hp/1000 lb
Calculated
266hp/t198kW/t120hp/1000 lb
Calculated
Torque-to-weight
373Nm/t250lb-ft/ton
Calculated
339Nm/t227lb-ft/ton
Calculated
Estimated range
630km391mi
Calculated
578km359mi
Calculated
Displacement
4,395cc268cu in
2,993cc183cu in
Length
4,867mm192in
4,794mm189in
Width
1,907mm75in
1,887mm74in
Height
1,353mm53in
1,395mm55in
Wheelbase
2,827mm111in
2,857mm112in
Front track
1,627mm64in
1,617mm64in
Rear track
1,632mm64in
1,605mm63in
Ground clearance-
121mm5in
Trunk volume-
300L
Max trunk volume
350L
385L
Doors
2
2
Seats
4
4
Fuel tank
68L
59L
CO2 emissions
246g/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) Competition 4.4 V8BMW M4 Convertible (G83) Competition 3.0PowerTorque
  • BMW M8 Convertible (F91) Competition 4.4 V8: Power / Torque
  • BMW M4 Convertible (G83) Competition 3.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWM8 Convertible (F91)Competition 4.4 V86,000 rpm1,800-5,800 rpm6,250 rpm
BMWM4 Convertible (G83)Competition 3.06,250 rpm2,750-5,500 rpm7,200 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWM8 Convertible (F91)Competition 4.4 V8BMWM4 Convertible (G83)Competition 3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.1 s
3.5 s
0-100 km/h
0-62 mph
3.3 s
3.7 s
0-200 km/h
0-124 mph
11.1 s
13.2 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
Limited
Drag race simulation
60 ft
18 m
1.8 s
1.9 s
330 ft
101 m
4.8 s
5.0 s
1/8 mile
201 m
7.3 s
7.6 s
1000 ft
305 m
9.4 s
9.9 s
1/4 mile
402 m
11.2 s
11.8 s
Trap speed
1/4 mile
402 m
201 km/h
125 mph
191 km/h
119 mph

Power comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Competition 4.4 V8
625 hp
466 kW
BMWM4 Convertible (G83)Competition 3.0
510 hp
380 kW

BMW M8 Convertible (F91) Competition 4.4 V8 has 115 hp more than BMW M4 Convertible (G83) Competition 3.0.

The biggest power difference is between BMW M4 Convertible (G83) Competition 3.0 and BMW M8 Convertible (F91) Competition 4.4 V8: 115 hp (86 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Competition 4.4 V8
750 Nm
553 lb-ft
BMWM4 Convertible (G83)Competition 3.0
650 Nm
479 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Competition 4.4 V8
2,010 kg
4,431 lb
BMWM4 Convertible (G83)Competition 3.0
1,920 kg
4,233 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)Competition 4.4 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (G83)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)Competition 4.4 V83.3 s
BMWM4 Convertible (G83)Competition 3.03.7 s

The biggest 0-100 km/h difference is between BMW M8 Convertible (F91) Competition 4.4 V8 and BMW M4 Convertible (G83) Competition 3.0: 0.4 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)Competition 4.4 V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
BMWM4 Convertible (G83)Competition 3.0
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

The biggest fuel consumption difference is between BMW M4 Convertible (G83) Competition 3.0 and BMW M8 Convertible (F91) Competition 4.4 V8: 0.6 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)Competition 4.4 V8
311 hp/t
232 kW/t
3.2 kg/hp
BMWM4 Convertible (G83)Competition 3.0
266 hp/t
198 kW/t
3.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Competition 4.4 V8
630 km
391 mi
BMWM4 Convertible (G83)Competition 3.0
578 km
359 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWM8 Convertible (F91)Competition 4.4 V8
625 hp
466 kW
3.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM4 Convertible (G83)Competition 3.0
510 hp
380 kW
3.7 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)Competition 4.4 V8
Power
625 hp
466 kW
0-100 km/h3.3 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 (G83)Competition 3.0
Power
510 hp
380 kW
0-100 km/h3.7 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
4,794 mm
188.7 in
Height
1,395 mm
54.9 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)Competition 4.4 V8
Power
625 hp
466 kW
0-100 km/h3.3 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 (G83)Competition 3.0
Power
510 hp
380 kW
0-100 km/h3.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

BMW M8 Convertible (F91) Competition 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)Competition 4.4 V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
3.3 s
BMWM4 Convertible (G83)Competition 3.0
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
3.7 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)Competition 4.4 V8
311 hp/t
232 kW/t
3.2 kg/hp
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
BMWM4 Convertible (G83)Competition 3.0
266 hp/t
198 kW/t
3.8 kg/hp
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWM8 Convertible (F91)Competition 4.4 V8BMWM4 Convertible (G83)Competition 3.0
Power
625 hp
466 kW
510 hp
380 kW
Torque
750 Nm
553 lb-ft
650 Nm
479 lb-ft
Acceleration
3.3 s
3.7 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
1,920 kg
4,233 lb
Fuel consumption
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
10.2 L/100 km
23.1 mpg US
27.7 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
300 L
10.6 cu ft
Length
4,794 mm
188.7 in
Height
1,395 mm
54.9 in
Range score
630 km
391 mi
578 km
359 mi
CO2 score
246 g/km
-
Trunk score
350 L
12.4 cu ft
300 L
10.6 cu ft
Power-to-weight score
311 hp/t
232 kW/t
3.2 kg/hp
266 hp/t
198 kW/t
3.8 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) Competition 4.4 V8BMW M4 Convertible (G83) Competition 3.0
Consumption10.8 L/100 km21.8 mpg US26.2 mpg UK10.2 L/100 km23.1 mpg US27.7 mpg UK
Cost / 100 km18.90 LC100 km17.85 LC100 km
Cost / 100 mi30.42 LC100 mi28.73 LC100 mi
Annual fuel used1,620 L428 US gal356 UK gal1,530 L404 US gal337 UK gal
Annual fuel cost2,835 LC/year2,678 LC/year

Head-to-head comparisons

BMW M8 Convertible (F91) Competition 4.4 V8

  • Has 115 hp more
  • Has 100 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 45 hp/t better power-to-weight
  • Has 51 km (32 mi) more estimated range
  • Has 50 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
  • Best estimated range
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW M8 Convertible (F91) Competition 4.4 V8
BMW M4 Convertible (G83) Competition 3.0
Compare selected cars
2 vehicles selected

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