Electric cars cost less to run than petrol or diesel cars, but the savings depend on your electricity rates, how far you drive, and whether you charge at home

The main benefit of an electric car is lower fuel cost. Electricity is cheaper per mile than petrol or diesel in most places. A typical electric car might cost 3 to 5 pence per mile to charge at home, while a petrol car costs 12 to 15 pence per mile. That difference adds up fast if you drive 12,000 miles a year—the UK average. Over five years, you could save £2,000 to £3,000 on fuel alone.

But the savings only happen if you charge at home or at cheap public chargers. If you rely on rapid chargers at motorway services, the cost per mile climbs closer to petrol prices. And if you pay for workplace or public charging every time, the advantage shrinks. The real saving comes from charging overnight on a domestic tariff, which is why most electric car owners install a home charger.

Electric cars also have lower maintenance costs because they have fewer moving parts. There is no oil to change, no spark plugs, no timing belt, no transmission fluid. The brake pads last much longer because electric cars use regenerative braking—the motor slows the car and captures energy instead of friction wearing the pads down. Over the life of the car, maintenance can cost 40 to 50 percent less than a petrol equivalent.

Key Takeaways

  • Charging an electric car at home costs roughly one-third the price per mile of petrol, saving most owners £400 to £600 per year on fuel.
  • Maintenance is significantly cheaper because electric cars have no oil changes, spark plugs, or complex transmissions, and brake pads wear much more slowly.
  • Government grants and tax incentives reduce the purchase price in some cases, though the amount varies by region and changes year to year.
  • Electric cars produce zero tailpipe emissions, which improves local air quality and reduces your contribution to climate pollution.
  • The upfront cost is still higher than an equivalent petrol car, so the savings take time to recoup through lower running costs.

How much you actually save on fuel

The fuel saving depends on three things: your electricity rate, your car's efficiency, and how many miles you drive. Most domestic electricity costs between 24 and 30 pence per kilowatt-hour (kWh) as of 2024, though this varies by supplier and region. An efficient electric car uses about 0.15 to 0.20 kWh per mile, so a full charge costs £3 to £5 and covers 150 to 200 miles.

A petrol car covering the same distance costs £18 to £24 in fuel at current pump prices. That is a real difference. If you drive 12,000 miles a year—the UK average—you would spend roughly £720 to £1,200 on electricity for an electric car, compared to £2,160 to £2,880 on petrol. The saving is £1,440 to £2,160 per year, or £7,200 to £10,800 over five years.

The catch is that this assumes you charge at home on a standard domestic rate. If you charge only at public rapid chargers, the cost per mile can be 8 to 12 pence, which cuts the saving to £400 to £800 per year. If you have access to a workplace charger or a cheap off-peak tariff (some suppliers offer rates as low as 7 to 10 pence per kWh at night), the saving grows even larger.

Maintenance costs are genuinely lower

An electric car has no engine oil, no oil filter, no spark plugs, no distributor cap, no timing belt, no transmission fluid, and no gearbox overhaul waiting for you. These are the items that make petrol and diesel cars expensive to maintain. A typical petrol car needs an oil change every 10,000 miles; an electric car needs nothing equivalent.

Brake pads last two to three times longer on an electric car because regenerative braking does most of the work. When you lift off the accelerator or press the brake pedal gently, the electric motor reverses and acts as a generator, slowing the car while feeding power back to the battery. Only hard braking uses the friction brakes, so the pads wear slowly. Many owners report their original pads lasting 100,000 miles or more.

Scheduled maintenance on an electric car typically includes tyre rotation, cabin air filter replacement, and brake fluid checks—items that cost £100 to £300 per year. A petrol car of the same age might need spark plugs, air filters, coolant flushes, and transmission servicing, running £400 to £800 per year. Over ten years, the difference is substantial. Repair costs when something does break are harder to predict, but electric cars have fewer systems that can fail.

Purchase price and government support

Electric cars cost more upfront than petrol cars. A basic electric hatchback costs £25,000 to £35,000 new, while a comparable petrol hatchback costs £15,000 to £22,000. That gap has narrowed in recent years as battery costs have fallen, but it remains real. The question is whether the lower running costs recoup that difference before you sell or scrap the car.

Government grants reduce the purchase price in some cases. The UK government previously offered the Plug-in Car Grant, which paid up to £3,500 toward the cost of a new electric car, but this scheme ended in June 2022. Some local authorities and employers offer their own incentives, and a few regions have grants for installing a home charger. The amount and availability vary by location and change regularly, so check with your local council or your employer's benefits team.

Tax treatment also differs. Electric cars are exempt from vehicle excise duty (road tax) for the first year and pay a reduced rate afterward. Company car tax is lower for electric vehicles than for petrol equivalents, which makes them attractive to employees with a company car benefit. These savings are smaller than the fuel and maintenance savings, but they add to the total.

Environmental impact and air quality

An electric car produces zero tailpipe emissions. It does not release carbon dioxide, nitrogen oxides, or particulate matter where you drive. This matters most in cities and congested areas, where air pollution from petrol and diesel cars contributes to respiratory illness, heart disease, and premature death. If you live in or regularly drive through a city, switching to an electric car improves the air you and others breathe.

The overall environmental benefit depends on how the electricity is generated. In the UK, the grid is roughly 40 percent renewable energy and 20 percent nuclear, with the rest from gas and coal. An electric car charged on this mix produces about 50 to 60 percent fewer emissions over its lifetime than a petrol car, even accounting for battery manufacturing. As the grid becomes greener, the advantage grows. In regions with mostly renewable electricity, the benefit is much larger.

Battery manufacturing does have an environmental cost. Mining lithium, cobalt, and nickel requires energy and can damage local ecosystems. A new electric car battery has an embedded carbon cost of 2 to 4 tonnes of CO2. However, this is recouped within 15,000 to 30,000 miles of driving on a typical UK grid, after which the electric car is cleaner than a petrol car for the rest of its life.

Convenience of home charging

If you have a driveway or dedicated parking space, you can install a home charger and charge overnight. This means you start each day with a full battery, and you never need to visit a petrol station for routine driving. For people who drive less than 150 miles per day—most UK drivers—this is genuinely convenient. You plug in when you get home and unplug in the morning.

A home charger costs £500 to £1,500 to install, depending on your electrics and the charger type. The government's Electric Vehicle Homecharge Scheme previously covered 75 percent of the cost up to £350, but this scheme also ended in 2022. Some suppliers and local authorities still offer grants. Once installed, charging costs only the price of electricity, which is why home charging is so much cheaper than public rapid charging.

Without a home charger, an electric car is less convenient. You rely on public chargers, which are slower and more expensive. Rapid chargers take 20 to 40 minutes for an 80 percent charge; standard chargers take 4 to 8 hours. If you live in a flat or do not have off-street parking, an electric car may not suit your situation unless your workplace or a nearby public car park has a charger you can use regularly.

Range and long-distance driving

Most modern electric cars have a range of 200 to 300 miles on a full charge, which is enough for daily commuting and local trips. However, long-distance driving is slower and requires planning. A 300-mile journey in a petrol car takes about 5 hours plus a 5-minute fuel stop. The same journey in an electric car takes 6 to 7 hours because you need to stop for 20 to 40 minutes to charge halfway.

The UK has a growing network of public chargers, with over 30,000 charging points as of 2024. Motorway services now have rapid chargers, and many towns have standard chargers. Apps like Zap-Map show charger locations and availability. For occasional long trips, this is manageable. For people who drive 300+ miles weekly, an electric car may not be practical unless they can charge at work or have access to a second vehicle.

Battery range decreases in cold weather and at high speeds. In winter, you might lose 20 to 30 percent of range. On a motorway at 70 mph, range is lower than in mixed driving. These factors matter for long journeys but have little effect on daily commuting, where most drivers use only 30 to 50 percent of their battery each day.

Performance and driving experience

Electric cars are quick off the line because the electric motor delivers maximum torque when ready. Even modest electric cars feel brisk in town driving. Many owners find this enjoyable and notice they arrive at their destination less tired because there is no gear changing and the ride is smooth and quiet.

The quiet cabin is a real benefit for daily driving. There is no engine noise, no vibration, and no gear changes. Road and wind noise are the only sounds, which makes the car feel more refined. Some people love this; others miss the engine sound. It is a matter of preference, but most owners adapt quickly.

Handling is generally good because the battery sits low in the floor, lowering the centre of gravity. The car feels stable and planted. Regenerative braking takes some getting used to—lifting off the accelerator slows the car noticeably, so you use the brake pedal less often. Most drivers find this intuitive after a few days.

Frequently Asked Questions

Do electric cars really save money compared to petrol cars?

Yes, if you charge at home. Fuel costs are roughly one-third of petrol, and maintenance is 40 to 50 percent cheaper. The upfront cost is higher, but the running costs recoup the difference over five to seven years for most drivers. If you rely on public rapid chargers, the saving is much smaller.

How long does a battery last, and what does replacement cost?

Modern electric car batteries are warrantied for 8 years or 100,000 miles, whichever comes first. Most retain 80 to 90 percent of their capacity after this time. Replacement costs £4,000 to £15,000 depending on the car, but battery prices are falling. Many owners keep their cars beyond the warranty period without needing replacement.

Can I charge an electric car if I do not have a driveway?

It is more difficult but possible. You can use public chargers, though this is slower and more expensive than home charging. Some workplaces, car parks, and apartment buildings have chargers. Ask your local council about on-street charging schemes, which are expanding in many areas.

Are electric cars safe in a crash?

Yes. The battery is mounted low and protected by the car's structure. Crash test ratings for electric cars are as good as or better than petrol cars. The main difference is that the battery can take longer to cool after a severe crash, so emergency services are trained to monitor it. This is a precaution, not a common problem.

What happens if I run out of charge on the motorway?

Modern cars warn you well before the battery is empty, and the range estimate accounts for real driving conditions. If you do run out, breakdown cover can tow you to a charger. Most drivers plan charging stops on long journeys using apps like Zap-Map, just as they would plan petrol stops on an unfamiliar route.