EV vs Petrol TCO

It depends on your inputs. Home and public charging prices differ, as do electricity consumption, petrol efficiency, fuel price and annual mileage. Enter the rates you actually pay; the calculator compares cost per mile from those assumptions. Do not treat a national average or sample result as a guaranteed saving.

For 2026/27, a zero-emission company car has an appropriate percentage of 4%. Petrol cars use a percentage based on CO₂ emissions and the relevant HMRC band. The final tax also depends on the vehicle P11D value, your tax rate and any employee contribution, so compare specific vehicles and confirm their details against current HMRC guidance.

This calculator models the selected vehicle price, energy or fuel, maintenance, insurance, VED, depreciation and—when enabled—company-car BIK. Check the input assumptions and treat the result as an estimate, not a quote.

There is no single official depreciation rate for either fuel type. Residual value depends on the model, age, mileage, condition, market demand and purchase method, so use the editable assumptions and avoid applying the result to every vehicle.

EVs have fewer powertrain maintenance items, but tyres, brakes, servicing, insurance and repairs still vary by model and driver. The maintenance figures in this tool are assumptions that should be replaced with vehicle-specific estimates where available.

It can, but salary sacrifice is not modelled as a complete employment package here. The outcome depends on the employer scheme, salary, benefit rules, pension and other deductions. Confirm the full quote with the employer before deciding.

Choose a vehicle pair, then edit annual miles, ownership period, charging split, electricity, fuel and other assumptions. Enable company-car mode only when you want the BIK scenario included; vehicle-specific quotes and resale estimates should replace the illustrative preset values.

It is a projection based on the ownership period and assumptions you enter. It does not guarantee that one vehicle will be cheaper because financing, resale value, energy prices and maintenance can change.

That depends on your mileage, access to home charging, purchase or lease cost, vehicle choice and how long you keep the car. Compare your own scenarios and include public charging, insurance and resale uncertainty before making a decision.

Annual mileage, ownership period, vehicle purchase price, depreciation or residual value, home-charging share, electricity and fuel prices, maintenance, insurance and company-car status can all change the comparison. Test more than one reasonable scenario.

It uses the 2026/27 recurring annual VED rate of £200 for post-April-2017 vehicles and applies the expensive-car supplement in ownership years 2 to 6 when the preset price exceeds the assumed £40,000 petrol/diesel or £50,000 zero-emission threshold. Future-year rows hold those rates flat and do not model electric-vehicle excise duty (eVED), which is due to take effect from 1 April 2028. It does not calculate registration-specific first-year VED or confirm the vehicle’s historical registration/list price.

Choose a loan term to model finance for both vehicles separately. A zero deposit finances the full vehicle price; the comparison includes payments and any balance remaining at the end of your ownership period, then subtracts estimated resale value. It is a simplified repayment model, not a lender quote.