Tesla vs petrol running cost calculator
Enter your mileage and prices. The result covers fuel or electricity only, plus the planned pay-per-mile tax if you tick it.
Result
Defaults: home off-peak 7.6p/kWh (Intelligent Octopus Go), standard rate 26.32p/kWh (Ofgem price cap from 1 October 2026), Supercharger 47p/kWh (example peak Tesla-owner price reported by CAR magazine), petrol 161.61p/litre (DESNZ weekly prices, w/c 31 August 2026). Car efficiency from EV Database real-world estimates. Change any figure to match yours.