The true cost of going electric revealed
One of the main advantages of electrified cars is greatly reduced running costs, right? As such cars become more common, we find out if that's really the case...
This could be the year in which electrified cars really take off in the UK. No fewer than 23 new fully electric models are due to go on sale in the next 12 months, along with a host of plug-in hybrid versions of popular models.
Although sales of electric vehicles (EVs) were still relatively modest last year, accounting for just 1.6% of all new car sales, that’s 144% more than were registered in 2018. If you factor in all types of hybrids as well, electrified vehicles accounted for more than 200,000 sales. That’s one in every 10 cars sold last year.
Sales are predicted to shoot up over the next few years, too. One in five new cars sold will be electrified by 2026, Bloomberg predicts. This boom is partly due to car makers introducing low-emissions models in a bid not to fall foul of the European Union (EU) regulations that came into force on 1 January. Huge fines will be imposed if the average CO2 output of the cars they sell exceeds 95g/km. The UK has its own emissions targets to meet, too, so the Government is promoting greener forms of transport.
One of the measures that Westminster is employing to help the country meet these targets is to provide local councils with grants to help them improve the EV infrastructure by installing public charging points. As a result, the UK’s public EV charging infrastructure is really ramping up.
There are currently more than 10,600 charging sites around the UK, providing connections for nearly 30,000 vehicles, according to Zap Map. Growth during 2019 helped charging sites exceed the number of petrol stations in the UK by more than 2000; there are 8394 petrol stations, although those collectively contain some 60,000 fuel pumps.
Cost of charging
More than 80% of EV charging is done by owners at home, because it’s more convenient and affordable. If you can take advantage of a cheap night-time energy tariff, you should pay only around seven pence per kilowatt hour (kWh) for the electricity. Recharging an EV with a modest-sized battery, such as a Hyundai Ioniq Electric, from 10-80% at home can therefore cost as little as £1.88, while the same top-up for an Audi E-tron, which has a much bigger battery, costs just £4.66.
However, around 40% of the UK’s 25 million households don’t have a driveway or other off-street space in which to charge an EV, so they’ll have to resort to other solutions. If you can’t charge your car at work, you’ll need to use public chargers. Although there are still a lot of slow (3kW) public chargers that are free to use, you’ll have to pay if you want a quick energy fix. And this is where the costs can rack up if you don’t research the various networks in advance. Use an Ionity high-power charging unit to get an ultra-rapid 10-80% charge for an E-tron (which can accept a rate of up to 150kW) and it will cost an eye-watering £45.89.
That’s almost 10 times as expensive as home charging. In fact, using the Ionity charger takes away one of the big advantages of EVs: that they’re usually cheaper to run than their conventionally powered counterparts. Based on What Car?’s True MPG fuel economy figures, a diesel Audi Q7 50 TDI averages 27.2mpg, and that means it costs 22 pence per mile to drive. When exclusively using Ionity chargers, the similar-sized E-tron costs 34 pence per mile.
Why is Ionity so expensive? Until recently, this network charged a flat rate of just £8 per charge, no matter how much electricity your car took, but it changed to a kWh-based fee at the end of January ahead of ambitious expansion plans. At present, it’s the only ultra-rapid charging network in the UK, though.
Although 43kW and 50kW ‘rapid’ chargers aren’t as fast, some other networks levy a big premium for these, too. The same E-tron charge at a Polar rapid charger costs £26.60, based on a price of 40p per kWh. Ecotricity and Shell Recharge’s rapid chargers cost 39p per kWh, so these aren’t much cheaper, at £25.94. However, customers who also have a home energy account with Ecotricity pay less than half of this amount, because they get a cheaper rate.
Without this discount, every public charger capable of 43kW or more is more expensive than Tesla’s Superchargers, which demand a fee of around 24p per kWh for a 120kW charge.
Although the overall cost of charging an electric car with a smaller battery is lower, it’s still up to five times more costly than night-time home charging. Indeed, a 10-80% charge for an Ioniq Electric costs £10.46 at an Ecotricity or Shell Recharge station.
Although that doesn’t make driving an Ioniq Electric as expensive as driving a conventionally powered car, it certainly brings the cost close. Charging an Ioniq Electric at the above rates equates to a cost per mile of 10p, which isn’t far off the True MPG cost per mile for a petrol-engined rival such as the Skoda Scala 1.0 TSI 115.
Some providers keep down the cost of rapid charging, though, so it’s worth seeking these out. Rates vary at Charge Your Car points, but we found a 43kWh unit with a 25p per minute fee, which meant our Ioniq Electric top-up cost just £5.59. The company charges a £20 fee if you want an access card, but the chargers can be accessed without this via a smartphone app.
Slower chargers are generally cheaper, and regular users can benefit from a lower cost per kWh if they sign up to a scheme that charges a monthly fee. The Full plan from Source London costs £4 per month and 4p per kWh thereafter, equating to just 97p for a 10-80% top-up in the Ioniq’s case.
You might have to pay for parking while you charge your car on the street, so it’s worth checking out the cost of this up front, too.
Car park fees can significantly increase the cost of charging. Some charger-equipped car parks in central London cost up to £9 per hour yet don’t offer EV drivers any discount, while many hotels and restaurants state that only paying customers can use the chargers in their car parks.
Another thing to watch out for is overstay fees. These have been introduced by providers to solve the problem of people leaving their EV in a charging bay after its charging session has finished. We found a Genie Point charger in south-east London with a £10 overstay fee after 65 minutes, while the Tesla Supercharger at the Bluewater shopping centre in Kent has an idle fee of 35p per minute if a car is left there once it has been charged to 100%, doubling to 70p per minute if all the charging points are taken.
For all the latest reviews, advice and new car deals, sign up to the What Car? newsletter here
Page 1 of 3