UK EV Running Cost Calculators
Free tools for UK drivers — compare electric vs petrol (ICE) running costs, calculate home charging sessions, and see what you could save through salary sacrifice.
EV vs Petrol or Diesel
Enter your annual mileage and see the real difference in running costs between electric and petrol or diesel — including your blended charging rate.
Open calculator →Home Charging Cost
Calculate the exact cost of a home charging session — and cost per mile — based on your battery size, charge level, and energy tariff.
Open calculator →Salary Sacrifice
Find out how much you could save getting an EV through your employer's salary sacrifice scheme versus a personal lease — including tax and NI savings.
Open calculator →All three calculators run entirely in your browser — no data is stored or sent anywhere. Figures use UK pump prices, HMRC tax bands, and real-world charging rates. Update any input and results recalculate instantly.
Whether you’re comparing an EV against your current ICE (internal combustion engine) car, working out the cost of a home charge, or exploring salary sacrifice for the first time, the numbers update as you type.
Charging tariff tip: the biggest factor in EV running costs is your home charging rate. Drivers on a dedicated EV tariff like Octopus Go (from 9p/kWh overnight) typically pay two to three times less per mile than those on a standard tariff. The EV vs Petrol calculator lets you compare tariffs side by side.