What an electric car actually costs to run in the UK (2026)
The running cost of an electric vehicle (EV) in the UK depends heavily on where you charge: home charging at off-peak energy tariffs costs about 7-12p per kWh (Octopus Go, Intelligent Octopus, EDF GoElectric tariffs); standard daytime home charging costs around 27p/kWh (April 2026 Ofgem cap). Public rapid charging on motorways and at destinations costs 60-89p/kWh — the same energy can cost 5-12× more depending on charging location.
A typical 2026 EV uses about 3.5-4.5 miles per kWh (depending on size, weather, and driving style). At home off-peak rates (10p/kWh), running cost is 2-3p/mile. At Ofgem cap rates (27p/kWh), it's 6-8p/mile. At rapid charging (75p/kWh), it's 17-21p/mile — comparable to or worse than a fuel-efficient petrol car at 142p/litre and 45 MPG.
For the average UK driver doing 7,400 miles/year, home-overnight EV charging costs about £180-220/year — vs £900-1,100 for a comparable petrol car. The savings are substantial if you charge mostly at home off-peak. The picture changes dramatically for drivers who can't charge at home and rely on public infrastructure: total annual energy costs can match or exceed petrol equivalents.
EV other-than-fuel running costs are generally lower than ICE: no oil changes, no spark plugs, brake pads last longer due to regenerative braking, no exhaust system to maintain. EV insurance has historically been slightly higher (10-20% premium) due to higher repair costs and limited specialist garages, but premiums have normalised in 2025-2026 as the market matures. Road tax (VED) — previously £0 for EVs — moved to the standard £200 annual rate from April 2025, plus the £440 expensive car supplement for electric vehicles over £50k list price. Battery degradation: typical loss is about 1-2% capacity per year for modern lithium-ion EVs, meaning a 10-year-old EV typically retains 80-90% of its original range.
Total cost of EV ownership over 5 years
A 5-year cost-of-ownership comparison for a £35,000 EV vs a £30,000 petrol equivalent (both new) for a typical UK driver at 8,000 miles/year: the EV faces higher upfront depreciation (~40% over 5 years, vs ~50% for petrol) but lower running costs throughout. Total 5-year ownership cost: EV approximately £24,000 (purchase delta + running costs - residual); petrol approximately £21,500. Counter-intuitively, EVs CAN cost more over 5 years for low-mileage drivers if the purchase premium isn't offset by fuel savings.
The math reverses for higher-mileage drivers (15,000+ miles/year) or those benefiting from heavily-discounted off-peak home charging tariffs. A 15,000-mile/year driver with home off-peak charging saves £1,500-£2,000/year in fuel vs petrol — over 5 years that's £7,500-£10,000 of fuel savings, which more than offsets the typical £3,000-£5,000 purchase premium. For company-car drivers, the BiK tax difference alone (4% EV vs 24-37% ICE) compounds to make EV the clear winner regardless of mileage.
Rates, assumptions and sources
Official figures where they exist, and the assumptions behind any running-cost comparison. Checked on 2 September 2026.
Official figures this calculator applies
- Company car benefit-in-kind — electric vehicles attract a low percentage of list price, rising on a published schedule; this is the main tax advantage of an EV through salary sacrifice. GOV.UK: Tax on company cars
- Vehicle Excise Duty — electric vehicles became liable for VED from April 2025 and are no longer exempt. GOV.UK: Vehicle tax rate tables
- Fuel duty and VAT — apply to petrol and diesel; domestic electricity is charged at the 5% reduced rate of VAT, public charging at 20%. GOV.UK: Fuel Duty
UKCalc assumptions — not official figures
- Electricity price is the decisive input and varies enormously. Off-peak home charging on an EV tariff can be a small fraction of the rapid public charging rate. A comparison assuming home charging does not describe the cost for someone without a driveway.
- Efficiency figures (miles per kWh) are your input; real-world efficiency falls markedly in cold weather and at motorway speeds.
- Excluded: home charger installation, battery degradation, insurance differences and residual value.
Public charging changes the answer. The 5% domestic VAT rate versus 20% on public charging is a large structural difference, and it is the single reason EV running-cost comparisons vary so widely between sources.