How Much Does It Cost to Charge an EV Per Mile? UK 2026
EV cost per mile UK 2026: 1.9p on off-peak home, 6.3p standard home, 19p+ on public rapid. The maths plus three real-world examples.
The single most-asked question about owning an EV in the UK: what does it actually cost to drive a mile? The answer depends entirely on where you charge - and the gap between cheapest and most expensive is about 10x. This guide breaks down the maths for the three main charging scenarios, with three realistic annual cost examples.
The cost-per-mile formula
Two numbers do all the work.
EV cost per mile is determined by two factors:
- Vehicle efficiency, measured in miles per kWh (mi/kWh). Typical UK EVs return 3-4 mi/kWh in mixed real-world driving, with smaller EVs (VW e-Up, Renault Zoe) reaching 4.5-5 mi/kWh and larger SUVs/4x4s (Audi e-tron, Tesla Model X) dipping to 2.5-3 mi/kWh.
- Cost per kWh of electricity, which depends entirely on where you charge - your home tariff, a workplace charger, or a public network.
The formula is straightforward:
Cost per mile = Cost per kWh / Miles per kWh
So a Tesla Model 3 (4 mi/kWh) charged at Intelligent Octopus Go (8p/kWh) costs 8 / 4 = 2p per mile. The same car at a public rapid (79p/kWh) costs 79 / 4 = 19.8p per mile.
What different charging types cost in 2026
Five realistic price points for UK drivers.
| Off-peak home (Intelligent Octopus Go) | Off-peak home (classic Octopus Go / EDF GoElectric 35) | Standard home (single-rate) | Public AC (7-22kW, lamp-post or destination) | Public rapid (50-150kW) | |
|---|---|---|---|---|---|
| Rate (per kWh) | ~8p (July 2026) | ~8.5p | ~25-27p | ~45-65p | ~75-79p |
| Cost per mile @ 4 mi/kWh | 1.9p | 2.1p | 6.5p | 13.8p | 19.8p |
| Annual cost @ 8,000 miles | GBP 152 | GBP 172 | GBP 520 | GBP 1,104 | GBP 1,584 |
| Notes | Requires smart meter + compatible EV/charger | Simpler 5-hour window, no API integration needed | Default if you're not on a dual-rate EV tariff | Slower charging, often subsidised in residential schemes | Useful for top-ups, expensive as a primary fuel source |
Three real-world annual cost examples
What different driving profiles actually pay.
Example 1: Suburban commuter (Nissan Leaf 40, 8,000 miles/year, 100% home off-peak)
- Vehicle efficiency: 4 mi/kWh
- Energy used: 8,000 / 4 = 2,000 kWh/year
- At 8p/kWh: 2,000 × 0.08 = GBP 160/year in fuel
- Equivalent petrol cost at 16p/mile: GBP 1,280/year. Saving: GBP 1,120/year.
Example 2: Mixed-use family (Tesla Model Y, 12,000 miles/year, 80% home off-peak / 20% rapid)
- Vehicle efficiency: 3.5 mi/kWh
- Total energy: 12,000 / 3.5 = 3,429 kWh/year
- Off-peak portion: 2,743 kWh × 8p = GBP 219
- Rapid portion: 686 kWh × 79p = GBP 542
- Total: GBP 761/year in fuel (blended ~6.3p/mile)
- Equivalent petrol cost at 17p/mile: GBP 2,040/year. Saving: GBP 1,279/year.
Example 3: High-mileage business user (BYD Atto 3, 22,000 miles/year, 70% home off-peak / 30% rapid)
- Vehicle efficiency: 3.5 mi/kWh
- Total energy: 22,000 / 3.5 = 6,286 kWh/year
- Off-peak portion: 4,400 kWh × 8p = GBP 352
- Rapid portion: 1,886 kWh × 79p = GBP 1,490
- Total: GBP 1,842/year in fuel (blended ~8.4p/mile)
- Equivalent petrol cost at 17p/mile: GBP 3,740/year. Saving: GBP 1,898/year.
EV vs petrol per-mile comparison (2026)
The break-even line for UK drivers.
At June 2026 UK petrol prices (~142p/litre, ~50 mpg for a typical family hatchback):
- Petrol at 50 mpg + 142p/L = 12.9p/mile. Smaller cars at 60+ mpg = ~10.7p/mile.
- EV at 4 mi/kWh + off-peak 8p/kWh = 2p/mile. Saving: 10.9p/mile (84%).
- EV at 4 mi/kWh + standard home 26p/kWh = 6.5p/mile. Saving: 6.4p/mile (50%).
- EV at 4 mi/kWh + public rapid 79p/kWh = 19.8p/mile. WORSE than petrol by 7p/mile.
The honest summary: an EV costing less than petrol depends on home charging access. Drivers who must rely entirely on public rapid charging will pay more per mile than they would for petrol. See our guide for drivers without a driveway for the workarounds (cross-pavement charging, workplace, lamppost schemes).
The per-mile figures above cover the energy cost only. Three other variables worth knowing about:
- Home charger amortisation. A 7kW Pod Point / Wallbox install costs ~GBP 800-1,200 and typically lasts 7-10 years. Spread over 8,000 miles/year, that's roughly 1.4-2.0p/mile - small but not zero.
- Battery degradation. Real-world UK EVs lose ~1-2% of battery capacity per year. The cost of progressive range reduction is hard to monetise but factors in if you keep the car 8+ years.
- Servicing. EVs need less routine work (no oil changes, fewer wear items) but tyres wear ~20-30% faster than ICE due to torque + weight. Net result is usually slightly cheaper than ICE servicing.
How much does an EV tariff cut your cost per mile?
This is where the biggest savings hide, and it is the single most important lever you control. Charging on a standard electricity rate of around 28p per kWh, a typical EV doing about 3.5 miles per kWh costs roughly 8p a mile. Switch to a dedicated EV tariff with a cheap overnight window of around 7p per kWh, and that same mile drops to about 2p, a saving of roughly 75 per cent on your fuel.
Put another way, charging at home on a good overnight rate can make electric motoring cheaper per mile than almost anything else on the road, while relying on public rapid chargers at 60 to 80p per kWh pushes the cost back up to around 20p a mile, more expensive than petrol. The lesson is simple: do as much charging as you can in the cheap overnight window. Our best EV tariffs for high mileage guide covers which tariffs deliver the lowest rates.
Does cold weather increase your cost per mile?
Yes, noticeably. In cold weather an EV uses more energy per mile, because cabin heating draws real power and the battery itself is less efficient when it is cold. A car that manages 3.5 to 4 miles per kWh in mild conditions can drop to around 2.8 to 3 miles per kWh in a hard winter, which pushes your cost per mile up by roughly a fifth to a quarter even on the same tariff.
It evens out over the year, so your annual average sits between the summer and winter figures, but it is worth remembering when a winter charging session seems to deliver fewer miles than you expected. Pre-heating the car while it is still plugged in, on cheap overnight power, is a good way to take the edge off the winter penalty.
