Are Electric Cars Cheaper to Run Than Petrol? The Real Numbers

For most UK drivers who can charge at home, electric cars are cheaper to run than petrol equivalents, but the comparison is not as simple as a single headline figure. The cost of electricity versus petrol shifts with energy prices; public rapid charging closes the gap considerably; and higher EV insurance can offset fuel savings for some drivers. Explore our Guides section for more on EV ownership costs and charging options.

Is home charging really cheaper than petrol?

Yes, for most home chargers on a time-of-use tariff. Charging overnight when electricity rates are lowest typically makes electricity cost per mile significantly less than petrol. The saving depends entirely on your tariff's off-peak rate and your car's efficiency, so check your own supplier's current rates rather than using a figure quoted in any article, which will be out of date almost as soon as it is written. A Type 2 charging cable and a wallbox are the standard home charging setup in the UK and both improve charging efficiency over a standard socket.

What happens if you mainly use public chargers?

The cost advantage shrinks or disappears. Public rapid chargers, particularly at motorway services, price electricity in a way that reflects their infrastructure investment, and the cost per mile can rival or exceed petrol. If you do not have access to home charging, the economics of EV ownership look different, and some drivers find that a petrol car is still cheaper to run in that situation. Networks vary widely in pricing, and subscription plans can reduce the per-session cost, so compare options before committing to a particular charger network.

How much cheaper is EV servicing?

Servicing an electric car is generally simpler and less expensive than for a petrol car. There is no engine oil to change, no cambelt, no spark plugs, and no exhaust to maintain. Regenerative braking reduces wear on brake pads, which tends to extend their service life. What remains: tyre checks and rotation, brake fluid, cabin air filter, battery health check, and software updates. Some specialist garages charge more for EV work because of the training and equipment required, so the saving is real but not universal. Always get a quote from an EV-experienced garage or your manufacturer's network.

Why is EV insurance often more expensive than petrol?

Several factors push EV insurance premiums higher than petrol equivalents. Electric cars typically have a higher purchase price, which raises the cost to replace them. Battery packs are expensive to repair or replace, and there are currently fewer specialist EV repairers in the UK, which can extend repair times and push up claim costs. The market is changing as more insurers develop EV-specific products and more garages gain certification, so the gap is narrowing. Shop around, compare multiple quotes, and ask specifically about EV policies rather than accepting a standard quote.

Is the road tax situation the same for both?

Electric cars became subject to Vehicle Excise Duty in April 2025, so VED now applies to both EVs and petrol vehicles. The rates differ by registration date and list price for EVs, and by CO2 emissions band for petrol cars. One remaining advantage for EV drivers: most UK Clean Air Zones and the London Ultra Low Emission Zone (ULEZ) do not charge electric vehicles, which is a meaningful ongoing saving for drivers who regularly travel into urban centres. Check current VED rates on gov.uk, as they are reviewed periodically.

What factors most influence the comparison for your situation?

The single biggest variable is whether you can charge at home on a competitive tariff. If you can, the fuel cost saving is usually substantial. Your annual mileage matters too: high-mileage drivers benefit more from lower per-mile fuel costs. Insurance quotes vary widely between models and insurers, so get actual quotes rather than assuming. Finally, if you drive into ULEZ or Clean Air Zone areas regularly, the EV exemption is a real and ongoing saving that does not show up in simple fuel comparisons. Use a portable EV charger as a backup for journeys where a wallbox is not available.

Frequently asked questions

Are electric cars cheaper to run than petrol cars in the UK?

For most drivers who can charge at home on an off-peak tariff, the fuel cost per mile is lower for an EV. When you include insurance, servicing, and road tax, the overall comparison is closer, and it depends on your specific car, tariff, mileage, and insurer. Calculate your own numbers with real quotes rather than relying on published averages.

Does charging an EV cost less than filling up with petrol?

Home charging on an off-peak tariff is typically much cheaper per mile than petrol. Public rapid charging at motorway services can cost as much as or more than petrol per mile. The comparison depends on where and when you charge. Check your energy supplier's EV tariff rates for the most accurate figure for your situation.

Is EV servicing always cheaper than petrol car servicing?

Generally, yes: fewer parts to replace and no oil changes mean lower routine servicing costs. However, some specialist garages charge more for EV work, and tyre costs can be higher on heavier EVs. The saving is real for most drivers but not guaranteed to be significant at every garage or for every model.

Do electric cars pay road tax in the UK?

Yes, since April 2025. The rate depends on the car's registration date and list price. Check current VED rates on gov.uk, as they are updated periodically and the figures quoted in older articles may no longer be accurate.

Can I save money on insurance by switching to an EV?

Currently, EV insurance tends to be higher than for equivalent petrol cars, not lower. The market is improving as more EV-specialist insurers enter the market and claim costs reduce, but as a general rule you should expect to pay more for EV cover, not less. Get multiple quotes and look specifically for EV-focused policies.

What is ULEZ and how does it affect the running cost comparison?

ULEZ is the Ultra Low Emission Zone in London, where older petrol and diesel vehicles are charged a daily fee. Electric cars are currently exempt. If you drive in London regularly, this exemption is a genuine and recurring cost saving that should be factored into any comparison with a petrol car, particularly if your petrol vehicle would be subject to the daily charge.

The honest answer is that EVs are usually cheaper to run if you can charge at home, but the margin varies with energy prices, your insurance quote, and how much you rely on public charging. Browse our full Guides section for more detail on each cost area, and use our reg checker to find the right charging cable for your car.