What does the energy cost?
Compare annual fuel and electricity spending with your own assumptions. A useful piece of the ownership picture, with the arithmetic in plain sight.
A clearer comparison.
Use the inputs to calculate an estimate.
Energy only. Purchase price, depreciation, financing, insurance, servicing, taxes and charger installation are excluded.
The arithmetic
For miles, annual fuel use is distance divided by miles per US gallon. For kilometres, annual fuel use is distance multiplied by litres per 100 kilometres, then divided by 100. Multiply fuel use by your price per gallon or litre.
Annual electricity use is distance multiplied by kWh per 100 units of distance, divided by 100, then multiplied by 1 plus the charging loss allowance. Multiply that total by your electricity rate. The allowance is a simple extra-energy factor, not a measured charging efficiency.
What changes the answer?
Cold weather, speed, towing and driving conditions affect consumption. Home and public charging can have different prices; use a weighted rate reflecting your actual mix. Switching currency changes the display label, not exchange rates. Switching units converts the existing consumption, distance and fuel-price values.
For official US vehicle efficiency estimates, see FuelEconomy.gov ↗. Use the specification relevant to your own market.