Car comparison

BMW M8 Convertible (F91) · Facelift 2022 Competition 4.4 V8vsBMW X6 M (F96) 4.4 V8

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

New comparison

BMW M8 Convertible (F91) · Facelift 2022

Competition 4.4 V8

625 hp4395 ccGasolineAWDAutomaticTwin-turboCabriolet / convertible2022-present
VS

BMW X6 M (F96)

4.4 V8

600 hp4395 ccGasolineAWDAutomaticTurbocharged2019-2023

Comparison overview

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

Best choices

BMW M8 Convertible (F91) Facelift 2022 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
  • Lightest
    2,025 kg
    4,464 lb
  • Best power-to-weight
    309 hp/t
    230 kW/t
    3.2 kg/hp
  • Lowest combined fuel consumption
    11.4 L/100 km
    20.6 mpg US
    24.8 mpg UK
  • Lowest city consumption
    16.9 L/100 km
    13.9 mpg US
    16.7 mpg UK
  • Lowest highway consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Best performance score
    87/100
  • Best economy score
    76/100

BMW X6 M (F96) 4.4 V8

  • Best estimated range
    654 km
    406 mi
  • Largest trunk
    580 L
  • Best overall score
    82/100
  • Best practicality score
    79/100

Specification comparison

Specification comparison
ModelBMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8BMWX6 M (F96)4.4 V8
Power
625hp466kW
600hp447kW
Torque
750Nm553lb-ft
750Nm553lb-ft
Curb weight
2,025kg4,464lb
2,295kg5,060lb
Gross weight
2,440kg5,379lb
3,000kg6,614lb
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
39.7s99% target: 257 km/h / 160 mph
Calculated
48.8s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.3s
3.9s
0-200 km/h
11.2s
Calculated
13.5s
0-60 mph
3.1s
Calculated
3.7s
Calculated
Fuel consumption
11.4L/100 km20.6mpg US24.8mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption city
16.9L/100 km13.9mpg US16.7mpg UK
17.5L/100 km13.4mpg US16.1mpg UK
Fuel consumption highway
8.2L/100 km28.7mpg US34.4mpg UK
10L/100 km23.5mpg US28.2mpg UK
Quarter mile
11.2s
Calculated
12.0s
Calculated
Power-to-weight
309hp/t230kW/t140hp/1000 lb
Calculated
261hp/t195kW/t119hp/1000 lb
Calculated
Torque-to-weight
370Nm/t248lb-ft/ton
Calculated
327Nm/t219lb-ft/ton
Calculated
Estimated range
596km371mi
Calculated
654km406mi
Calculated
Displacement
4,395cc268cu in
4,395cc268cu in
Length
4,867mm192in
4,941mm195in
Width
1,907mm75in
2,019mm79in
Height
1,353mm53in
1,692mm67in
Wheelbase
2,827mm111in
2,972mm117in
Front track
1,627mm64in
1,699mm67in
Rear track
1,632mm64in
1,688mm66in
Ground clearance-
213mm8in
Trunk volume
350L
580L
Max trunk volume-
1,530L
Doors
2
5
Seats
4
5
Fuel tank
68L
83L
CO2 emissions-
289g/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) Facelift 2022 Competition 4.4 V8BMW X6 M (F96) 4.4 V8PowerTorque
  • BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8: Power / Torque
  • BMW X6 M (F96) 4.4 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V86,000 rpm1,800-5,860 rpm6,250 rpm
BMWX6 M (F96)4.4 V86,000 rpm1,800-5,600 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8BMWX6 M (F96)4.4 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.1 s
3.7 s
0-100 km/h
0-62 mph
3.3 s
3.9 s
0-200 km/h
0-124 mph
11.2 s
13.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.8 s
2.0 s
330 ft
101 m
4.8 s
5.2 s
1/8 mile
201 m
7.3 s
7.8 s
1000 ft
305 m
9.4 s
10.0 s
1/4 mile
402 m
11.2 s
12.0 s
Trap speed
1/4 mile
402 m
200 km/h
124 mph
190 km/h
118 mph

Power comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8
625 hp
466 kW
BMWX6 M (F96)4.4 V8
600 hp
447 kW

BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 has 25 hp more than BMW X6 M (F96) 4.4 V8.

The biggest power difference is between BMW X6 M (F96) 4.4 V8 and BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8: 25 hp (19 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8
750 Nm
553 lb-ft
BMWX6 M (F96)4.4 V8
750 Nm
553 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8
2,025 kg
4,464 lb
BMWX6 M (F96)4.4 V8
2,295 kg
5,060 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)Facelift 2022Competition 4.4 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX6 M (F96)4.4 V8
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)Facelift 2022Competition 4.4 V83.3 s
BMWX6 M (F96)4.4 V83.9 s

The biggest 0-100 km/h difference is between BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 and BMW X6 M (F96) 4.4 V8: 0.6 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)Facelift 2022Competition 4.4 V8
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
BMWX6 M (F96)4.4 V8
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

The biggest fuel consumption difference is between BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 and BMW X6 M (F96) 4.4 V8: 1.3 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)Facelift 2022Competition 4.4 V8
309 hp/t
230 kW/t
3.2 kg/hp
BMWX6 M (F96)4.4 V8
261 hp/t
195 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)Facelift 2022Competition 4.4 V8
596 km
371 mi
BMWX6 M (F96)4.4 V8
654 km
406 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8
625 hp
466 kW
3.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX6 M (F96)4.4 V8
600 hp
447 kW
3.9 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
BMWM8 Convertible (F91)Facelift 2022Competition 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
BMWX6 M (F96)4.4 V8
Power
600 hp
447 kW
0-100 km/h3.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
580 L
20.5 cu ft
Length
4,941 mm
194.5 in
Height
1,692 mm
66.6 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
BMWM8 Convertible (F91)Facelift 2022Competition 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
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
BMWX6 M (F96)4.4 V8
Power
600 hp
447 kW
0-100 km/h3.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

BMW M8 Convertible (F91) Facelift 2022 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)Facelift 2022Competition 4.4 V8
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
3.3 s
BMWX6 M (F96)4.4 V8
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.9 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
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8
309 hp/t
230 kW/t
3.2 kg/hp
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
BMWX6 M (F96)4.4 V8
261 hp/t
195 kW/t
3.8 kg/hp
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8BMWX6 M (F96)4.4 V8
Power
625 hp
466 kW
600 hp
447 kW
Torque
750 Nm
553 lb-ft
750 Nm
553 lb-ft
Acceleration
3.3 s
3.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,025 kg
4,464 lb
2,295 kg
5,060 lb
Fuel consumption
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
12.7 L/100 km
18.5 mpg US
22.2 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
5 doors
5 seats
Trunk
580 L
20.5 cu ft
Length
4,941 mm
194.5 in
Height
1,692 mm
66.6 in
Range score
596 km
371 mi
654 km
406 mi
CO2 score
-
289 g/km
Trunk score
350 L
12.4 cu ft
580 L
20.5 cu ft
Power-to-weight score
309 hp/t
230 kW/t
3.2 kg/hp
261 hp/t
195 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) Facelift 2022 Competition 4.4 V8BMW X6 M (F96) 4.4 V8
Consumption11.4 L/100 km20.6 mpg US24.8 mpg UK12.7 L/100 km18.5 mpg US22.2 mpg UK
Cost / 100 km19.95 LC100 km22.22 LC100 km
Cost / 100 mi32.11 LC100 mi35.77 LC100 mi
Annual fuel used1,710 L452 US gal376 UK gal1,905 L503 US gal419 UK gal
Annual fuel cost2,993 LC/year3,334 LC/year

Head-to-head comparisons

BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8

  • Has 25 hp more
  • Is 270 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Uses 1.3 L/100 km less fuel
  • Has 47 hp/t better power-to-weight

Pros

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

Cons

  • Smallest trunk

BMW X6 M (F96) 4.4 V8

  • Has 57 km (35 mi) more estimated range
  • Has 230 L more trunk volume

Pros

  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW M8 Convertible (F91) Competition 4.4 V8
BMW X6 M (F96) 4.4 V8
Compare selected cars
2 vehicles selected

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