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Home›Consumption›BMW M4 vs BMW i8

Consumption comparison

BMW M4 Convertible F82 vs BMW i8 Roadster I12: how much do I save per year?

Plug-in hybrid vs electric: the cost depends on your usage profile. Select your scenario below.

BMWPetrol

M4 Convertible F82

60 L · 2018

10,2 L/100km

VS
BMWPHEV

i8 Roadster I12

10.8 kWh · 30 L · 2018

14,5 kWh/100km

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

Annual mileage

15 000 km/an

5 000 km50 000 km

Simulated driving mix

Drag anywhere on the bar to adjust

Charging type

Annual energy cost · 15 000 km

Typical annual usage : Mix 30% city / 50% road / 20% motorway · charging home (0,21 €/kWh)

BMWPetrol

M4 Convertible F82

Annual energy cost · 15 000 km

3 197€

21,31 € / 100 km

Equivalent to 1 606 L of petrol 95 per year

Weighted consumption
10,7 L/100km
Fuel price
1,99 €/L
Fuel used
1606,5 L per year
BMWPHEV

i8 Roadster I12

Manufacturer data being validated for this scenario.

Comparison unavailable - manufacturer data being validated.

Your savings over the ownership period

Cumulative projection by annual mileage. The cheaper-to-run vehicle widens the gap year after year.

Annual mileage

15 000 km/an

Comparison unavailable - manufacturer data being validated.

Annual cost breakdown by charging mix

Projection over 15 000 km/year, by proportion of each charging type.

BMW

M4 Convertible F82

Fuelkm/year€/kmAnnual cost
Annual fuel1,99 €/L15 000 km0,213 €/km3 197 €
BMW

i8 Roadster I12

Charging mixkm/year€/kmAnnual cost
100% Homeoff-peak rate · 0,21 €/kWh15 000 km2 175 kWh0,000 €/km0 €
100% AC stationpublic AC rate · 0,30 €/kWh15 000 km2 175 kWh0,000 €/km0 €
100% Fast DCDC motorway rate · 0,45 €/kWh15 000 km2 175 kWh0,000 €/km0 €
Typical mix80% home · 15% AC · 5% DC15 000 km2 175 kWh0,000 €/km0 €
Annual total (typical mix)0 €

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Frequently asked questions

The declared range of the BMW i8 Roadster is 440 km (WLTP/EPA). In real-world conditions, expect 10-20% less.