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Home›Consumption›BYD Dolphin vs BMW i3

Consumption comparison

BYD Dolphin Boost 150kW vs BMW i3 (120 Ah) I01: how much do I save per year?

Same car, two powertrains. The simulator below calculates the gap based on your mileage and charging type.

BYDBEV

Dolphin Boost 150kW

58.5 kWh · 2022

14,5 kWh/100km

VS
BMWBEVMost economical

i3 (120 Ah) I01

37.9 kWh · 2018

13,1 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 (0,19 €/kWh)

BYDBEV

Dolphin Boost 150kW

Annual energy cost · 15 000 km

410€

2,73 € / 100 km

Equivalent to 206 L of petrol 95 per year

Weighted consumption
14,4 kWh/100km
Energy rate
0,19 €/kWh · home
Energy used
2157,0 kWh per year
BMWBEVMost economical

i3 (120 Ah) I01

Annual energy cost · 15 000 km

388€

2,59 € / 100 km

Equivalent to 195 L of petrol 95 per year

Weighted consumption
13,6 kWh/100km
Energy rate
0,19 €/kWh · home
Energy used
2043,6 kWh per year
Annual gap i3 (120 Ah) vs Dolphin Boost 150kW+22 €/an≈ 11 L petrol 95

BMW i3 (120 Ah) I01 costs 22 €/an less in energy than BYD Dolphin Boost 150kW, over 15 000 kmwith home for this driving mix.

≈ 11 L of petrol 95 saved per year

By charging mix:
  • Home+24 €/an
  • AC station+34 €/an
  • Fast DC+51 €/an

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

1 year

22 €

≈ 11 L petrol 95

3 years

65 €

≈ 32 L petrol 95

5 years

108 €

≈ 54 L petrol 95

10 years

215 €

≈ 108 L petrol 95

Cumulative savings for BMW i3 (120 Ah) I01 versus BYD Dolphin Boost 150kW. Excluding purchase, insurance, maintenance and depreciation.

Annual cost breakdown by charging mix

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

BYD

Dolphin Boost 150kW

Charging mixkm/year€/kmAnnual cost
100% Homeoff-peak rate · 0,21 €/kWh15 000 km2 175 kWh0,030 €/km453 €
100% AC stationpublic AC rate · 0,30 €/kWh15 000 km2 175 kWh0,043 €/km647 €
100% Fast DCDC motorway rate · 0,45 €/kWh15 000 km2 175 kWh0,065 €/km971 €
Typical mix80% home · 15% AC · 5% DC15 000 km2 175 kWh0,034 €/km508 €
Annual total (typical mix)508 €
BMW

i3 (120 Ah) I01

Charging mixkm/year€/kmAnnual cost
100% Homeoff-peak rate · 0,21 €/kWh15 000 km1 965 kWh0,029 €/km429 €
100% AC stationpublic AC rate · 0,30 €/kWh15 000 km1 965 kWh0,041 €/km613 €
100% Fast DCDC motorway rate · 0,45 €/kWh15 000 km1 965 kWh0,061 €/km920 €
Typical mix80% home · 15% AC · 5% DC15 000 km1 965 kWh0,032 €/km481 €
Annual total (typical mix)481 €

Compared to a petrol equivalent

Same scenarios: energy cost of a City car petrol (~5,8 L/100km).

ScenarioDolphin Boost 150kWi3 (120 Ah) I01Petrol equiv.
Daily100 km · home3,02 €2,86 €11,54 €
Weekend200 km · home6,04 €5,72 €23,08 €
Holiday500 km · fast DC32,36 €30,65 €57,71 €
Annual20,000 km · typical mix677,30 €641,69 €2308,40 €

Based on petrol 95 1,99 €/L · cons. City car petrol 5,8 L/100km. Excluding purchase, maintenance and depreciation.

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Frequently asked questions

On a 100 km mixed trip, the BMW i3 (120 Ah) is about 10% cheaper than the BYD Dolphin Boost 150kW with default parameters. This ratio shifts with your actual energy prices — simulate for your profile.

BYD Dolphin Boost 150kW offers more range: 427 km vs 359 km for BMW i3 (120 Ah) (WLTP/EPA). In real motorway use, expect 10-20% less depending on temperature.

The BMW i3 (120 Ah) is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.