For 10,000 miles per year
EV charged at home at 8p/kWh: An EV using approximately 3.5 miles per kWh would use around 2,857kWh to travel 10,000 miles. At 8p/kWh, that works out at about £229 per year, or 2.3p per mile.
Petrol car at 40mpg with petrol at £1.39/litre: At 40mpg, a petrol car uses around 0.114 litres per mile. At £1.39 per litre, that works out at approximately 15.9p per mile, or around £1,590 per year for 10,000 miles. Actual petrol costs vary with fuel prices and real-world MPG.
Annual fuel saving: approximately £1,360
That comparison is specifically for home EV charging at 8p/kWh. Current government advisory rates use a weighted average EV efficiency of 3.59 miles/kWh and show how charging costs vary considerably between home and public charging.
What about public EV charging?
If you rely heavily on public rapid and ultra-rapid EV charging, the cost advantage can be much smaller. Public charging prices vary considerably between networks and charger types, with faster chargers generally costing more than home charging. For the biggest savings, use cheap home or overnight charging whenever possible and treat public rapid charging as a convenient top-up for longer journeys. The government’s current advisory figures put average home charging at 7p per mile versus 15p per mile for public charging, although individual tariffs can be significantly higher or lower.
