Cheapest EVs to Run in the UK 2026
Last updated: June 2026 · Based on 28p/kWh home charging
Not all EVs cost the same per mile. Efficiency varies from under 3 miles/kWh in large SUVs to over 4 miles/kWh in the most aerodynamic models. Here's the definitive UK ranking.
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Use the cost calculatorTop 10 cheapest EVs to run: pence per mile ranked
Based on real-world efficiency data. Cost per mile calculated at 28p/kWh home charging. Annual cost at 10,000 miles, 80% home / 20% public (60p/kWh).
| # | Model | mi/kWh | p/mile | Annual (10k mi) | From |
|---|---|---|---|---|---|
| 1 | Hyundai Ioniq 6 SR RWD | 4.2 | 6.7p | £800 | £38,995 |
| 2 | Tesla Model 3 Highland RWD | 4.1 | 6.8p | £829 | £40,990 |
| 3 | MG4 Standard Range | 4 | 7p | £860 | £26,995 |
| 4 | BYD Dolphin Comfort | 4 | 7p | £860 | £28,490 |
| 5 | Fiat 500e (42kWh) | 4 | 7p | £860 | £34,995 |
| 6 | Mini Cooper E | 3.8 | 7.4p | £900 | £31,110 |
| 7 | Cupra Born 77kWh | 3.8 | 7.4p | £900 | £33,905 |
| 8 | Renault Megane E-Tech | 3.8 | 7.4p | £900 | £34,895 |
| 9 | Kia EV6 SR RWD | 3.8 | 7.4p | £900 | £38,745 |
| 10 | Polestar 2 LR Single Motor | 3.5 | 8p | £980 | £45,900 |
Prices correct at June 2026. Real-world efficiency varies with driving style, speed, and temperature.
The MG4: best value combination
While the Ioniq 6 and Model 3 are slightly more efficient, the MG4 at £26,995 offers the best combination of low purchase price and competitive running costs. Its 4.0 miles/kWh efficiency gives identical running costs to the 500e and BYD Dolphin, at a fraction of the price of a comparable German hatchback.
The annual saving versus a Volkswagen Golf 1.5 eTSI at 44 MPG is approximately £630. At the £26,995 purchase price, that's a rapid payback on any premium over an equivalent petrol hatchback.
The overnight tariff difference
If you can switch to a dedicated EV overnight tariff like Octopus Go (typically 7p/kWh off-peak), the running cost landscape changes dramatically.
Ioniq 6 — standard tariff
6.7p/mile
£800/year at 10k miles
Ioniq 6 — overnight tariff
1.7p/mile
£200/year at 10k miles
Golf petrol (44 MPG)
14.9p/mile
£1,490/year at 10k miles
Octopus Go off-peak rate 7p/kWh; standard tariff 28p/kWh; petrol 143.9p/litre.
EVs to avoid if running cost is your priority
Larger, heavier SUVs and performance EVs are significantly more expensive to run per mile:
- !Kia EV9 (3.0 mi/kWh) — 9.3p/mile home, £1,140/year at 10k miles
- !BMW iX3 / iX (2.8–3.2 mi/kWh) — 8.8–10p/mile home
- !Audi e-tron / Q8 e-tron (2.5–2.8 mi/kWh) — 10–11.2p/mile home
- !Mercedes EQS 580 (2.5 mi/kWh) — 11.2p/mile home
These are still cheaper than equivalent petrol models — but the running cost advantage is smaller, and the purchase premium is often larger.
Frequently asked questions
What is the cheapest EV to run per mile in the UK in 2026?
The Hyundai Ioniq 6 Standard Range RWD and Tesla Model 3 (2024 Highland) are the most efficient EVs in the UK market at 4.1–4.2 miles per kWh. At a standard home tariff of 28p/kWh, this equates to approximately 6.7–6.8p per mile — roughly half the cost of a 40 MPG petrol car.
How much does it cost to run an EV per year in the UK?
At 10,000 miles per year with 80% home charging (28p/kWh) and 20% public rapid charging (60p/kWh), the most efficient EVs cost £700–£900 per year. Average EVs cost £900–£1,200 per year. Less efficient larger EVs and SUVs cost £1,200–£1,600 per year at 10,000 miles.
Is the MG4 the cheapest EV to buy and run?
The MG4 Standard Range at £26,995 offers among the best combination of low purchase price and efficient running costs (4.0 miles/kWh, 7p per mile). It's not the absolute cheapest per mile — the Ioniq 6 and Model 3 are more efficient — but no other EV matches its combination of low price and sub-8p running costs.
Do overnight EV tariffs make a significant difference?
Yes, dramatically. On a standard tariff at 28p/kWh, the Ioniq 6 costs 6.7p per mile. On an overnight EV tariff like Octopus Go at 7p/kWh, this drops to 1.7p per mile — less than a quarter of the standard rate. At 10,000 miles per year this difference amounts to £500 annually.