Car comparison

BMW M8 Convertible (F91) · Facelift 2022 Competition 4.4 V8vsBMW iX (I20 LCI) · Facelift 2025 M70 108.9 kWh

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

BMW iX (I20 LCI) · Facelift 2025

M70 108.9 kWh

659 hpElectricAWDAutomatic2025-present

Comparison overview

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

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
Lightest
2,025 kg
4,464 lb
Best power-to-weight
309 hp/t
230 kW/t
3.2 kg/hp
Best performance score
87/100
Best economy score
76/100

BMW iX (I20 LCI) Facelift 2025 M70 108.9 kWh

Most powerful
659 hp
491 kW
Highest torque
1,015 Nm
749 lb-ft
Largest trunk
500 L
Best overall score
81/100
Best practicality score
76/100

Specification comparison

Specification comparison
Model	BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh
Power	625hp466kW	659hp491kW
Torque	750Nm553lb-ft	1,015Nm749lb-ft
Curb weight	2,025kg4,464lb	2,580kg5,688lb
Gross weight	2,440kg5,379lb	3,160kg6,967lb
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	50.5s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	3.3s	3.8s
0-200 km/h	11.2s Calculated	13.5s Calculated
0-60 mph	3.1s Calculated	3.6s Calculated
Fuel consumption	11.4L/100 km20.6mpg US24.8mpg UK	-
Fuel consumption city	16.9L/100 km13.9mpg US16.7mpg UK	-
Fuel consumption highway	8.2L/100 km28.7mpg US34.4mpg UK	-
Quarter mile	11.2s Calculated	11.9s Calculated
Power-to-weight	309hp/t230kW/t140hp/1000 lb Calculated	255hp/t190kW/t116hp/1000 lb Calculated
Torque-to-weight	370Nm/t248lb-ft/ton Calculated	393Nm/t263lb-ft/ton Calculated
Estimated range	596km371mi Calculated	-
Displacement	4,395cc268cu in	-
Length	4,867mm192in	4,965mm195in
Width	1,907mm75in	1,970mm78in
Height	1,353mm53in	1,695mm67in
Wheelbase	2,827mm111in	3,000mm118in
Front track	1,627mm64in	1,659mm65in
Rear track	1,632mm64in	1,688mm66in
Ground clearance	-	202mm8in
Trunk volume	350L	500L
Max trunk volume	-	1,750L
Doors	2	5
Seats	4	5
Fuel tank	68L	-

Performance charts

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

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh
	Acceleration checkpoints
0-60 mph 0-97 km/h	3.1 s	3.6 s
0-100 km/h 0-62 mph	3.3 s	3.8 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 Limited
	Drag race simulation
60 ft 18 m	1.8 s	1.9 s
330 ft 101 m	4.8 s	5.1 s
1/8 mile 201 m	7.3 s	7.7 s
1000 ft 305 m	9.4 s	10.0 s
1/4 mile 402 m	11.2 s	11.9 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
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	625 hp 466 kW
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	659 hp 491 kW

BMW iX (I20 LCI) Facelift 2025 M70 108.9 kWh has 34 hp more than BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8.

The biggest power difference is between BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 and BMW iX (I20 LCI) Facelift 2025 M70 108.9 kWh: 34 hp (25 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	750 Nm 553 lb-ft
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	1,015 Nm 749 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	2,025 kg 4,464 lb
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	2,580 kg 5,688 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	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
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	3.3 s
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	3.8 s

Although BMW iX (I20 LCI) Facelift 2025 M70 108.9 kWh has more power, BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8 and BMW iX (I20 LCI) Facelift 2025 M70 108.9 kWh: 0.5 s.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8	309 hp/t 230 kW/t 3.2 kg/hp
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	255 hp/t 190 kW/t 3.9 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top 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
BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh	659 hp 491 kW	3.8 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.

Vehicle

Performance score

Practicality score

BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8

Power	625 hp 466 kW
0-100 km/h	3.3 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

BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh

Power	659 hp 491 kW
0-100 km/h	3.8 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	5 doors 5 seats
Trunk	500 L 17.7 cu ft
Length	4,965 mm 195.5 in
Height	1,695 mm 66.7 in

Detailed score breakdown

Vehicle

BMWM8 Convertible (F91)Facelift 2022Competition 4.4 V8

BMWiX (I20 LCI)Facelift 2025M70 108.9 kWh

Power

625 hp

466 kW

659 hp

491 kW

Torque

750 Nm

553 lb-ft

1,015 Nm

749 lb-ft

Acceleration

3.3 s

3.8 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

2,580 kg

5,688 lb

Fuel consumption

11.4 L/100 km

20.6 mpg US

24.8 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	500 L 17.7 cu ft
Length	4,965 mm 195.5 in
Height	1,695 mm 66.7 in

Range score

596 km

371 mi

Trunk score

350 L

12.4 cu ft

500 L

17.7 cu ft

Power-to-weight score

309 hp/t

230 kW/t

3.2 kg/hp

255 hp/t

190 kW/t

3.9 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	BMW M8 Convertible (F91) Facelift 2022 Competition 4.4 V8
Consumption	11.4 L/100 km20.6 mpg US24.8 mpg UK
Cost / 100 km	19.95 LC100 km
Cost / 100 mi	32.11 LC100 mi
Annual fuel used	1,710 L452 US gal376 UK gal
Annual fuel cost	2,993 LC/year