Costs and savings · UK guidance
Will an electric car actually save me money?
It can, but cheaper charging does not always mean a cheaper car overall. Compare the same years and mileage, including the car itself, insurance, tax, maintenance and any home charger. Your mix of home and public charging makes a big difference.
Start with your real charging routine
Use the prices you can actually get. If you cannot charge at home, base your budget on the public chargers you would use. Allow for electricity lost during charging. Our calculator includes an adjustable allowance and compares energy costs only; it does not calculate the full cost of owning a car.
Include the costs beyond charging
Get an insurance quote for the exact car before committing. Add road tax, servicing, tyres and breakdown cover. If you need a home charger, use a surveyed installation quote including extra work. For public charging, check parking charges, subscriptions and fees for staying connected too long.
Compare buying and leasing fairly
Choose the same ownership period for each option. For a cash purchase, the loss in value is the purchase price minus what you receive when selling. That resale figure is an estimate. For a lease, compare the initial rental, all monthly rentals and any end-of-contract charges. For finance, include interest, fees and the final payment or settlement needed for your chosen outcome. Do not add depreciation on top of a lease’s payments: that would count part of the cost twice.
Is keeping my current car the cheaper choice?
It may be, particularly if it is reliable and you drive relatively little. Compare what keeping it will cost from today, including likely repairs and its future loss in value. The money you originally paid is already spent. A lower charging bill alone is not a reason to take on a car payment you cannot comfortably afford.
Can a cheap overnight tariff increase my household bill?
Yes. Some tariffs trade cheaper charging hours for higher prices at other times. Compare your whole home’s electricity use, the standing charge and exit fees. Check the meter and car or charger requirements before switching. A headline overnight rate is only part of the comparison.
Take it with you
Your whole-cost comparison
Gather these figures for each car over the same period. This is a comparison checklist, not a quotation.
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Your next step
Compare my charging and fuel costsSources and checks
Information checked on 28 September 2026. Rules and services can change. Our checklists help you ask useful questions; they are not inspections or official eligibility decisions.