Running-cost calculator
What does a mile actually cost? Compare an EV charged at home or on public rapid chargers with petrol, diesel and a hybrid, using today's UK prices or your own.
Defaults as of 4 November 2026. Energy and fuel prices change every week. The defaults are UK averages; your tariff, local forecourt and driving style will differ.
Mileage
Prices
Efficiency
Optional: tax, servicing, insurance
Leave blank to compare energy only. Figures are added to monthly, yearly and per-mile costs.
Your costs
| Fuel | Per month | Per year | Per mile | vs petrol / yr |
|---|
Where the defaults come from
- Home electricity 26.32p/kWh · Ofgem price cap, GB average, Direct Debit, 1 Oct–31 Dec 2026 (no VAT on electricity this period) · ofgem.gov.uk
- Public charging 82p/kWh · Zapmap Price Index, October 2026: weighted average PAYG on rapid and ultra-rapid (50 kW+). Slow/standard chargers averaged 54p; Tesla drivers at Superchargers paid 48p on average · zapmap.com
- Petrol 172.78p/L, diesel 198.58p/L · UK government (DESNZ) weekly road fuel prices, week of 2 November 2026, as reported by British Fuel Prices · britishfuelprices.co.uk
- Weekly road fuel prices dataset · GOV.UK statistics series · gov.uk
- EV 3.9 mi/kWh · ev-database.org real-world estimate for Tesla Model Y RWD: 255 Wh/mi · ev-database.org
- Petrol and diesel 50 mpg, hybrid 60 mpg · Motorbook's reference mpg values (they say these are reference values, not measured fleet averages). Enter your own car's figures · motorbook.uk
Maths: fuel cost per mile = price per litre × 4.546 ÷ mpg (UK gallon = 4.546 litres). EV cost per mile = price per kWh ÷ miles per kWh. Charging losses, standing charges and off-peak EV tariffs are not included; with a smart EV tariff, home charging can cost much less, so try your own rate.