Electric Cars · Switch or stay
Should I switch to an electric car? UK 2026
Switching saves about £1,253 a year in running costs at 8,000 miles — but only if you charge overnight at home. Rely on public rapid chargers and the same electric car costs you roughly £499 a year more than petrol. This page gives the honest three-year arithmetic, including the depreciation gap most switch guides leave out.
Direct answer
Is it worth switching to an electric car in 2026?
Switch if you have off-street parking with a home charger and cover more than about 8,600 miles a year. Below that, or without a driveway, the numbers do not work on a three-year new-car purchase — and if you charge only on public rapid chargers, they never work at any mileage.
The reason is that the fuel saving is real but the depreciation gap is bigger than most people expect. Over three years at 8,000 miles a year, our modelling puts an EV charged overnight at home at £3,056 in running costs against £6,816 for an equivalent petrol car — a £3,760 advantage. But cap hpi’s April 2026 market data shows battery-electric trade values still sitting an average of £4,019 (−15%) below the petrol version of the same model at 36 months and 30,000 miles. On a same-price purchase, that wipes the fuel saving out and leaves you marginally behind.
Two things flip it decisively in the EV’s favour: higher mileage (every extra 1,000 miles a year adds roughly £141 to the saving on an off-peak tariff) and buying used, because the first owner has already absorbed the depreciation gap. For the wider picture on charging, insurance and running costs, see our electric car costs hub.
The core numbers
Three-year running costs: EV vs petrol, UK 2026
This is the whole switch decision in one table. It covers a new car registered in 2026 and kept three years at 8,000 miles a year (24,000 miles total), and includes everything you pay to run the car — energy or fuel, insurance, vehicle excise duty and servicing. Purchase price and depreciation are handled separately below, because they are what actually decide the outcome.
Source: modelled over 24,000 miles from Ofgem price cap unit rates (July–September 2026), published EV off-peak tariffs, the Zapmap Charging Price Index (July 2026), UK Government weekly road fuel prices (3 August 2026), gov.uk vehicle tax rate tables, Kwik Fit published servicing prices and the MoneySuperMarket Electric Car Insurance Index 2026. Indicative, not quotes.
| Scenario (new car, 3 years, 8,000 miles/yr) | Energy or fuel | Insurance | VED | Servicing | 3-year total |
|---|---|---|---|---|---|
| EV, charged at home on an off-peak EV tariff (7p/kWh) | £504 | £1,686 | £410 | £456 | £3,056 |
| EV listed over £50,000, charged off-peak at home | £504 | £1,686 | £1,290 | £456 | £3,936 |
| EV, 80% home off-peak / 20% public rapid | £1,560 | £1,686 | £410 | £456 | £4,112 |
| EV, charged at home on the standard price-cap rate (26.11p/kWh) | £1,896 | £1,686 | £410 | £456 | £4,448 |
| Petrol, 45mpg real-world at 159.9p a litre | £3,888 | £1,461 | £855 | £612 | £6,816 |
| EV, public rapid charging only (80p/kWh) | £5,760 | £1,686 | £410 | £456 | £8,312 |
Sources and basis: EV efficiency 3.3 miles/kWh, the figure implied by Zapmap’s own pence-per-mile conversions. Public charging 54p/kWh standard and 80p/kWh rapid from the Zapmap Charging Price Index, July 2026. Home standard rate 26.11p/kWh from the Ofgem price cap for 1 July–30 September 2026; off-peak 7p/kWh from published overnight EV tariffs. Petrol 159.9p a litre, UK Government weekly road fuel prices, 3 August 2026. Insurance £562/yr EV and £487/yr petrol from the MoneySuperMarket Electric Car Insurance Index 2026. VED from the gov.uk vehicle tax rate tables (EV: £10 first year then £200; petrol at 111–130 g/km: £455 first year then £200; £440 expensive-car supplement in years 2 and 3 where it applies). Servicing from Kwik Fit published prices: EV Service £227.95 every two years or 20,000 miles; petrol interim £183.95 and full £243.95 alternating annually. Indicative figures, not quotes.
Break-even
At what mileage does an electric car actually win?
Strip out the noise and there are only two variables that matter: how many miles you do, and where the electricity comes from. Everything else — tax, servicing, insurance — nets out to the EV being roughly £125 a year cheaper before you plug it in at all (a £148 VED saving and a £52 servicing saving, less about £75 more on insurance).
| Annual mileage | Home off-peak (7p/kWh) | 80% home / 20% rapid | Home at price-cap rate | Public rapid only |
|---|---|---|---|---|
| 5,000 miles | +£830 | +£610 | +£540 | −£265 |
| 8,000 miles | +£1,253 | +£901 | +£789 | −£499 |
| 12,000 miles | +£1,817 | +£1,289 | +£1,121 | −£811 |
| 20,000 miles | +£2,945 | +£2,065 | +£1,785 | −£1,435 |
Annual running-cost saving (+) or extra cost (−) for an EV against a 45mpg petrol car, on the rates and assumptions in the table above. Positive means the EV is cheaper to run. Note that Zapmap’s July 2026 index puts slower public charging at 16p a mile — effectively identical to petrol at 16.2p a mile, so an EV charged on lamp-post and car-park units saves nothing on fuel at all.
Those are running-cost savings only. To decide whether to switch, you have to set them against what the change costs you up front — and in 2026 that is no longer the purchase price. Auto Trader’s April 2026 market data had the average new EV at £42,620 against £43,405 for the average new petrol car, the first time electric has undercut petrol; a year earlier the EV premium was close to £2,000. The Electric Car Grant, worth £3,750 or £1,500 depending on the model, applies to new EVs listed at £37,000 or less and is deducted at the dealer.
The catch
Depreciation is what decides it — not fuel
Here is the figure the switch guides tend to skip. cap hpi’s April 2026 used-car market analysis found that trade values for most battery-electric models still sit below the conventionally fuelled version of the same model, by an average of £4,019, or −15%, at 36 months and 30,000 miles. That gap has narrowed — it was £3,815 earlier in 2026 on the same measure, and used EV values have broadly stabilised after two years of heavy falls — but it has not closed.
Put the two halves together for a three-year new-car purchase at 8,000 miles a year, assuming you pay the same for the EV as for the petrol car and already have a charger: you save £3,760 in running costs and lose £4,019 in extra depreciation. You end up roughly £259 worse off. Add a wallbox installation, typically £800–£1,500 in 2026 with around £1,110 a fair average for a 7kW unit, and you are about £1,369 behind.
That is why the break-even mileage matters so much:
- You already have a home charger and an off-peak tariff: break-even at about 8,600 miles a year.
- You need to install a charger first: about 11,200 miles a year.
- Driveway but no EV tariff (charging at the standard price-cap rate): about 14,600 miles a year.
- No home charging at all: there is no break-even mileage. Public rapid charging costs more per mile than petrol, so the EV loses on running costs and on depreciation.
The single biggest way to sidestep all of this is to buy a two- or three-year-old EV instead of a new one. The depreciation gap is a cost the first owner has already paid; buy at the bottom of it and the running-cost saving falls straight to your bottom line at almost any mileage, provided you can charge at home. Battery state of health is the thing to check — in 2026 it moves resale value more than the odometer does.
Tax
VED, the expensive-car supplement and the 2028 pay-per-mile charge
Electric cars lost their road-tax exemption on 1 April 2025. Under the current gov.uk vehicle tax rate tables a zero-emission car registered new pays £10 in its first year and then the £200 standard rate from year two — the same standard rate as petrol and diesel. The EV advantage is now confined to the first-year rate, where a 111–130 g/km petrol car pays £455.
The sting is the expensive-car supplement: an extra £440 a year for five years from the second time the car is taxed. It applies to petrol and diesel cars listed above £40,000 and, per the current gov.uk table, to electric cars listed above £50,000. On a £55,000 EV that is £640 a year from year two — enough to turn the VED line from a £445 three-year saving into a £435 three-year penalty against a sub-£40,000 petrol car. If you are shopping near the threshold, a trim or option pack that pushes the list price over it is an expensive decision.
Looking further out, the Autumn Budget of 26 November 2025 confirmed a per-mile charge for electric cars — Electric Vehicle Excise Duty, or eVED — from April 2028, at 3p a mile for pure electric cars and 1.5p for plug-in hybrids, roughly half the fuel duty a petrol driver pays over the same distance. The government consulted on the design between November 2025 and March 2026 and the Treasury expects it to raise about £1.2bn a year. It sits on top of VED, not instead of it. If you buy in 2026 and keep the car three years, eVED bites for the last 16 months or so: about £320 at 8,000 miles a year, which nudges the break-even mileage from roughly 8,600 to about 9,400 miles a year. Company-car drivers are in a very different position — benefit-in-kind on an electric car is 4% in 2026/27, rising to 5%, 7% and 9% by 2029/30, against rates in the high thirties for petrol, and that gap is large enough that salary-sacrifice arithmetic rarely resembles the private-buyer arithmetic on this page.
Worked example
A worked example: same price, three years, 8,000 miles
Take two comparable new family hatchbacks bought in August 2026 at £34,000 each — one electric, one 45mpg petrol. You have a driveway, you install a 7kW wallbox for £1,110, and you sign up to a 7p overnight tariff. You keep the car three years and cover 24,000 miles.
- Electricity: 7,273 kWh at 7p = £509. Petrol: 24,000 miles at 45mpg and 159.9p a litre = £3,888. Saving £3,379.
- Insurance: £1,686 against £1,461. The EV costs you £225 more. Both are above the £566 average paid comprehensive premium the ABI recorded in Q2 2026 only if your risk profile is above average — see the UK car insurance cost index for where you sit, and our electric car insurance guide for why EV cover is priced the way it is.
- VED: £410 against £855. Saving £445.
- Servicing: £456 against £612. Saving £156 — real, but far short of the “half the maintenance” claim you often read. EVs also wear tyres faster because they are heavier and torquier, which eats into it.
- Wallbox: −£1,110 one-off.
- Depreciation: on cap hpi’s 36-month/30,000-mile average, the EV is worth £4,019 less at the end.
Net position after three years: £1,369 worse off in the EV. Repeat the same sums at 12,000 miles a year and the EV finishes about £322 ahead; at 20,000 miles a year, roughly £3,706 ahead. Skip the wallbox because you already have one, and the 8,000-mile case narrows to just £259 against the EV. The switch is genuinely marginal for an average-mileage private buyer in 2026 — which is a very different message from the one the industry is putting out while battery-electric cars take a record 27.5% of new registrations.
When to stay put
Five situations where switching does not add up
- You park on the street. This is the decisive one. Without home charging you are paying 16p–24p a mile against 16p for petrol, plus the depreciation gap. No mileage fixes it.
- You drive under about 6,000 miles a year. The saving is real but too small to recover the value gap inside three years. A cheap, efficient petrol or a used hybrid usually costs less overall — see our hybrid car insurance guide for how that middle option prices.
- You are buying new above £50,000. The expensive-car supplement adds £2,200 over five years and the depreciation on premium EVs has historically been the steepest in the market.
- You change cars every two years. Short holds concentrate depreciation into the period you own the car and give the running-cost saving no time to accumulate.
- Most of your miles are long motorway runs away from home. Motorway driving is the worst case for EV efficiency and forces you onto the most expensive charging.
Equally, if you have a driveway, do 12,000 miles or more, buy used or keep cars for five years or longer, the electric car is now the cheaper choice by a clear margin — and the gap widens every year you keep it.
FAQs
Should I switch to an electric car? Common questions
Only if you can charge at home and cover more than about 8,600 miles a year. On those conditions an EV saves roughly £1,253 a year in running costs at 8,000 miles and more above that. Without off-street parking, or below about 6,000 miles a year, a petrol car is still cheaper to own over three years once the depreciation gap is counted.
About 8,600 miles a year if you already have a home charger and an off-peak tariff, on a new car kept three years. Roughly 11,200 miles a year if you also have to pay for the wallbox installation, and about 14,600 miles a year if you charge at home on the standard price-cap rate rather than an EV tariff. On public rapid charging alone there is no break-even mileage.
On cost alone, no. The Zapmap Charging Price Index for July 2026 puts public rapid charging at 80p/kWh, equal to 24p a mile, against about 16p a mile for a 45mpg petrol car. Slower public charging at 54p/kWh works out at 16p a mile — the same as petrol. So a driver reliant on the public network pays around £499 a year more at 8,000 miles and still carries the EV depreciation gap.
At the Ofgem price cap rate of 26.11p/kWh for 1 July to 30 September 2026, roughly 7.9p a mile at 3.3 miles per kWh. On a dedicated overnight EV tariff at about 7p/kWh it falls to roughly 2.1p a mile. Over 8,000 miles that is the difference between about £632 a year and about £168 a year, so getting onto an EV tariff is worth more than almost any other single decision.
Yes. Since 1 April 2025 zero-emission cars pay vehicle excise duty. A new EV pays £10 in its first year and then the £200 standard rate, the same as petrol and diesel. The expensive-car supplement of £440 a year for five years from the second taxing applies to electric cars listed above £50,000, against £40,000 for petrol and diesel.
Slightly, and much less than it was. The MoneySuperMarket Electric Car Insurance Index for 2026 puts the average EV premium at about £562 against £487 for petrol — a gap of roughly £75 a year, down from around 30% in 2023. Battery repair costs and specialist labour are what keep EV cover above petrol, and the gap varies enormously by model.
Yes, though the gap is narrowing. cap hpi’s April 2026 analysis found battery-electric trade values averaging £4,019 — about 15% — below the petrol version of the same model at 36 months and 30,000 miles. Used EV values have stabilised after two years of steep falls, and battery state of health now influences resale value more than mileage does.
Electric Vehicle Excise Duty, confirmed at the Autumn Budget on 26 November 2025, starts in April 2028 at 3p a mile for pure electric cars and 1.5p a mile for plug-in hybrids. It is charged on top of standard VED, not instead of it. At 8,000 miles a year it adds about £240 a year, which pushes the three-year break-even mileage for a car bought in 2026 from roughly 8,600 to about 9,400 miles a year.
Keep exploring
Start with the electric car costs hub for charging, insurance and running-cost guides in one place. To see what cover will actually cost you, compare the national picture in the UK car insurance cost index, read why EV cover is priced differently in our electric car insurance guide, look at the middle option in the hybrid car insurance guide, or see a real example priced up in our Hyundai Kona Electric insurance breakdown.
Our sources
Sources & editorial
- GOV.UK — Vehicle tax rate tables (first-year rates, £200 standard rate, £440 expensive-car supplement and thresholds)
- Department for Energy Security and Net Zero — Weekly road fuel prices (petrol 159.9p a litre, 3 August 2026)
- Ofgem — Energy price cap unit rates and standing charges (26.11p/kWh electricity, July–September 2026)
- Zapmap — EV Charging Price Index, July 2026 (54p/kWh standard, 80p/kWh rapid)
- Association of British Insurers — Motor Insurance Premium Tracker, Q2 2026 (£566 average paid comprehensive premium)
- cap hpi — Future Car Market Overview, used cars, April 2026 (BEV trade values £4,019 below petrol equivalents at 36 months/30,000 miles)
Also drawn on: Kwik Fit published servicing prices (EV Service £227.95, interim £183.95, full £243.95, August 2026); the MoneySuperMarket Electric Car Insurance Index 2026 for the EV-versus-petrol premium gap; Auto Trader’s April 2026 new-car pricing data; SMMT July 2026 registration figures; and the Office for Zero Emission Vehicles Electric Car Grant terms.
Reviewed by the Car Insurance Expert editorial team. Methodology: all costs are modelled over 24,000 miles (three years at 8,000 miles a year) for a new car registered in 2026, at 3.3 miles per kWh for the electric car and 45mpg real-world for the petrol car. Figures are indicative and rounded; your own costs will vary with efficiency, tariff, postcode, no-claims discount and how you drive. Car Insurance Expert is an independent research site. It is not authorised or regulated by the Financial Conduct Authority, does not sell insurance, finance or warranties, and nothing on this page is a personal recommendation or financial advice.
Last updated: 2026-08-06