THE OWNERSHIP EQUATION

EV vs Petrol

Use your electricity tariff, charging habits and annual distance to see what an EV could change in your budget.

Your inputs

Petrol car

Purchase price

Fuel economy

Purchase price

Battery energy consumption

kWh/100km

Home electricity price / kWh

Charging efficiency

Your driving

Petrol economy unit

Petrol price

Petrol price is per…

Annual distance

Distance unit

Ownership period

years

Currency

Refine ownership costs

Optional values start at zero. Resale applies only at your selected ownership period; it is excluded from the crossover chart.

Petrol annual maintenance

EV annual maintenance

Petrol annual insurance

EV annual insurance

Petrol resale at end of ownership

EV resale at end of ownership

Charger installation

Public charging share

Public electricity price / kWh

Calculations run on your device. How the math works

Your results

LIVE CALCULATION

Results will appear here when JavaScript loads. See the worked example below for a reference calculation.

How this calculator works

EV energy cost per km = battery kWh/100km ÷ 100 ÷ charging efficiency × blended electricity tariff. Blended tariff = home rate × home share + public rate × public share.

Read the full methodology for definitions, conversion factors and limitations.

Worked example

At 18 kWh/100km, 90% charging efficiency and 0.20/kWh, charging costs 0.04/km. At 15,000 km/year that is 600 in annual electricity costs.

Before you act on the result

Use realistic local prices and your measured consumption where possible. Figures are scenario estimates, not forecasts. Fuel prices, electricity tariffs, driving conditions and ownership expenses can change. The selected currency labels your figures; it does not convert them.

Frequently asked questions

Does the calculation include charging losses?

Yes. Battery consumption is divided by charging efficiency. The default 90% is an editable scenario assumption, not a guarantee for your vehicle or charger.

What is missing from this estimate?

Financing, taxes, incentives, parking, tolls, inflation, battery replacement and variable future prices are excluded. Optional maintenance, insurance, resale and charger installation help refine your scenario.