Friday, 3 July 2026 · London
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Updated 4 Jun 2026
The EV-cars pillar

What an electric car really costs to own.

We don't do 0–60 times. We do pence per mile, depreciation, road tax and the salary-sacrifice maths, because that's what decides whether an EV is worth it.

3 reviews·1 brand hub·2 tools·from £164/yr to charge
The ownership numbers on our defaults
Charged, per mile 2.1p
Petrol, per mile 15.5p
Road tax + ECS £200
Start here · the toolRunning cost
Editorial diagram showing how far £1 of fuel travels: a Tesla Model Y covers about 47 miles on electricity at 2.1p per mile, against roughly 7 miles for the petrol equivalent at 14.4p per mile.

What will yours cost to run?

Charging, road tax and the company-car maths on your car and your mileage. The honest number, before you fall for the spec sheet.

£164/yr
Model Y to charge
vs £1,239
The petrol equivalent
4% BIK
Via salary sacrifice
Work out your numbers
The ownership maths

Before the test drive, the spreadsheet.

The two numbers that actually decide it: what it costs to charge, and what it costs through work.

Every tool
EV running-cost calculatorLive
Tesla Model Y27 EVs
8,000miles / yr
Intelligent Octopus Go
£164/yr
To charge at home · energy only
vs £1,239
petrol · 45 mpg
ScopeOff-peak overnight only. Standing charge excluded.
Run your own numbers
State of play · 2026

Owning an EV in 2026, the real costs.

The case for an electric car has quietly shifted from the showroom to the spreadsheet. The fun-to-drive argument was settled years ago; the question now is what it costs to keep one on the drive, and on that the picture is mixed but mostly good. Charge at home on a smart tariff and the running cost is a fraction of petrol, around £164 a year against £1,239 for the Model Y on our defaults.

Two things changed in 2026. EVs now pay road tax after the April VED change, including the Expensive Car Supplement on pricier models, so the 'free to tax' era is over. And the salary-sacrifice route is still the cheapest way into a new EV for anyone with the option, even as the benefit-in-kind rate climbs from 4% toward 9% by 2030.

Depreciation is the wildcard. It's improving as the used market matures, but it's still where most of the money goes, and it's the number the brochures never show you.

The case for an EV has moved from the showroom to the spreadsheet.
Written by JustWatt editorsHow we work →
What changed this year
APR 2026
EVs pay VED now. The "free to tax" era ended; pricier models also catch the Expensive Car Supplement.
2026/27
BIK at 4% keeps salary sacrifice the cheapest route into a new EV, rising to 9% by 2030.
ONGOING
Depreciation easing as the used market matures, but still the biggest line in ownership cost.
How we work

Independent, affiliate-funded, and honest about both.

Written by Ross and the JustWatt editors — two by-lines, no ghost-written filler. Who we are →
01

We don't sell what we review.

No chargers, no schemes, no installs. Our only job is to be right.

02

Affiliate links are disclosed, never decisive.

Some links earn us a commission. They never change a verdict or a ranking. How that works →

03

Every number shows its working.

Rates, tariffs and assumptions are cited and dated. If we can't source it, we don't say it.