Electric vehicles
Cost to charge a Kia EV3 Long Range at home in the UK (Oct–Dec 2026)
Last checked: 15 October 2026 · PlugLater
8,000 miles a year · 3.58 mi/kWh · 2,235 kWh
Off-peak 7.6p
£170 a year
2.1p a mile
Price cap 26.32p
£588 a year
7.4p a mile
Rapid 75p (illustration)
£1,676 a year
20.9p a mile
Unit cost only, every mile charged at that one rate. Standing charge and charging losses are not included. These match the Kia EV3 Long Range row in EV charging costs by car.
The EV3 Long Range has the biggest battery of the five cars in this series, at an estimated 78 kWh usable. That matters more than its 279 Wh a mile: a 10–80% top-up is more than a 7.4 kW wallbox can add in one six-hour window.
The car these figures are for
EV-Database lists this as the Kia EV3 Long Range (MY27), on sale since October 2026. Its 78.0 kWh usable battery is an EV-Database estimate. The Standard Range EV3 is also in the table and is shown below.
- Consumption: 279 Wh a mile, EV-Database’s real-range figure for moderate driving and climate, which EV-Database marks as an estimate. That is 1,000 ÷ 279 = 3.58 miles per kWh.
- Usable battery: 78.0 kWh (an EV-Database estimate).
- On-board AC charger: 11 kW, so a 7.4 kW single-phase home charger runs at its full 7.4 kW. EV-Database gives 0–100% at 7.4 kW as about 12h30m, and from a 3-pin plug at 2.3 kW as about 40 hours.
Source: EV-Database, Kia EV3 Long Range, checked 15 October 2026.
Worked example: a year at 8,000 miles
8,000 miles is the homepage calculator’s starting mileage. Energy for the year is miles ÷ miles per kWh, and cost is energy × the unit rate.
- 8,000 ÷ 3.58 = 2,235 kWh.
- At 7.6p: 2,235 × £0.076 = £170.
- At 26.32p: 2,235 × £0.2632 = £588.
- At 75p: 2,235 × £0.75 = £1,676.
- Off-peak against the cap: £588 − £170 = £418 less in unit cost, because 7.6p is 71% below 26.32p (1 − 7.6 ÷ 26.32 = 0.71).
That off-peak figure assumes every home kWh goes in between 23:30 and 05:30. Intelligent Octopus Go’s day rate is a quote for your address and is not the 26.32p cap, so use your own day rate for any charging outside the window.
Cost of one charge
| Charge | Energy | 7.6p | 26.32p | 75p |
|---|---|---|---|---|
| 10–80% top-up | 54.6 kWh | £4.15 | £14.37 | £40.95 |
| 0–100% (full usable battery) | 78.0 kWh | £5.93 | £20.53 | £58.50 |
| One 6-hour window at 7.4 kW | 44.4 kWh | £3.37 | £11.69 | – |
| One 6-hour window at 2.3 kW (3-pin) | 13.8 kWh | £1.05 | £3.63 | – |
A 10–80% top-up is 54.6 kWh: 70% of 78.0 kWh. At 7.4 kW that takes about 7.4 hours, which is longer than the six-hour 23:30–05:30 window. One window adds 44.4 kWh, about 159 miles. The last 10.2 kWh would cost 78p at 7.6p, or £2.68 at 26.32p if it runs past 05:30. Most people never need a 10–80% in one night. Two shorter nights stay inside the cheap window.
The 3-pin row is a granny lead at 10 A. It adds 13.8 kWh in the same six hours, about 49 miles. See granny charger vs wallbox for whether that covers your week.
Yearly cost at different mileages
| Miles a year | Energy | 7.6p | 26.32p | 75p |
|---|---|---|---|---|
| 5,000 miles | 1,397 kWh | £106 | £368 | £1,047 |
| 8,000 miles | 2,235 kWh | £170 | £588 | £1,676 |
| 12,000 miles | 3,352 kWh | £255 | £882 | £2,514 |
| 15,000 miles | 4,190 kWh | £318 | £1,103 | £3,142 |
Each cost is energy × rate, rounded to the pound, the same way the 142-car table rounds.
Other Kia EV3 versions
| Version | Wh/mile | mi/kWh | 7.6p | 26.32p |
|---|---|---|---|---|
| Long Range (this page) | 279 | 3.58 | £170 | £588 |
| Standard Range | 275 | 3.64 | £167 | £578 |
Every row comes from the same EV-Database list as all 142 cars. Battery sizes differ between versions, so the per-charge costs above are only for the Long Range.
Winter, motorways and losses
EV-Database’s 279 Wh a mile is a middle figure. Its own range for this car runs from about 240 Wh a mile (combined, mild weather) to 332 Wh a mile (combined, cold weather at −10°C with heating on), and 390 Wh a mile at 70 mph in the cold.
- If all 8,000 miles were at the cold combined figure: 8,000 ÷ 3.01 = 2,658 kWh, or £202 at 7.6p and £700 at 26.32p.
- That is a worst-case year, not a forecast. A real year mixes summer and winter.
- Charging losses are not included anywhere on this page. Some energy is lost between the meter and the battery, so your meter will show more kWh than the battery takes in. Your smart meter or charger app shows the real figure.
Check it with your own numbers
The homepage EV calculator has a mileage slider and three efficiency buttons. For the Kia EV3 the nearest button is 3.5 mi/kWh, so its totals will be close to, not the same as, the figures here. You can also type your own off-peak and day rates into the calculator. For the exact 3.58 mi/kWh figure at any mileage, use the mileage box on EV charging costs by car.
Other cars in this series: Vauxhall Corsa Electric, MG4, Tesla Model Y, Nissan Leaf, Tesla Model 3 and Renault 5. All 142 cars are in EV charging costs by car. Related: UK EV tariffs compared.
Questions people ask
How much does it cost to fully charge a Kia EV3 at home?
The Kia EV3 Long Range has a 78.0 kWh usable battery (an EV-Database estimate). Filling all of it costs about £5.93 at 7.6p/kWh and £20.53 at the 26.32p price cap, before charging losses. A more typical 10–80% top-up is 54.6 kWh: about £4.15 overnight or £14.37 at 26.32p.
How much does a Kia EV3 cost to charge per mile?
At 3.58 miles per kWh, it is about 2.1p a mile at 7.6p, 7.4p at 26.32p and 20.9p at 75p public rapid. Cold weather and motorway speeds raise all three.
How many miles does one night add to a Kia EV3?
In the six hours from 23:30 to 05:30, a 7.4 kW wallbox adds up to 44.4 kWh, about 159 miles at 3.58 mi/kWh. A 3-pin granny lead at 2.3 kW adds 13.8 kWh, about 49 miles. Losses are not included.
Is the standing charge included?
No. The 54.83p a day standing charge (about £200.13 a year under the October–December 2026 cap) is paid whatever time you charge, so it is left out of every figure here.
Is this financial advice?
No. It is arithmetic from published rates and EV-Database estimates. Check your own tariff and bill before you switch or buy anything.
Not financial advice. These are worked examples from published rates and EV-Database consumption estimates, for planning only. Your own tariff, day rate, standing charge, car, driving and weather will change the numbers. Check your bill and your supplier’s current terms before you switch or buy anything.
Sources
- EV-Database, Kia EV3 Long Range (consumption, usable battery, charging times)
- EV-Database, UK real-world consumption list (Wh/mile)
- Ofgem, price cap 1 October–31 December 2026
- Ofgem, unit rates and standing charges
- Octopus Energy, Intelligent Octopus Go
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