Real-world figures for the Design RWD (82.5 kWh): 3.6 mi/kWh, 82.5 kWh usable battery. A full charge costs about £7.33 on an 8p EV tariff, £24 on the price cap. Change the version, mileage and tariff below.
| Tariff | Off-peak | Per month | Per mile | Full charge |
|---|
Assumes 90% of home charging lands in the off-peak window. Standing charges and daytime household use aren't included. Rates checked 29 September 2026.
| Version | Usable | mi/kWh | Full charge, 8p | Full charge, cap | 0–100% on 7 kW | AC / DC max |
|---|---|---|---|---|---|---|
| Design RWD (82.5 kWh) | 82.5 kWh | 3.6 | £7.33 | £24 | 13h | 11 / 150 kW |
| Excellence AWD | 82.5 kWh | 3.3 | £7.33 | £24 | 13h | 11 / 150 kW |
LFP Blade battery: BYD recommends regular 100% charges, ideal for overnight tariffs.
DC charging is slow for the class (150 kW) — public rapid charging is comparatively poor value.
It has a heat pump as standard, so winter consumption typically rises 15–25% rather than the 30–40% you see on cars without one. The efficiency figure on this page is EV Database's real-world combined number, which sits between the official WLTP figure and a cold motorway run; it's the honest one to budget with.
On sale 2023–present. Home charging at 7 kW (11 kW AC on-board charger on this version) adds about 23 miles of range per hour. Public rapid charging peaks at 150 kW on the Design RWD (82.5 kWh); at typical UK rapid-charger prices of 75–85p/kWh that works out at 24.6p per mile — roughly the same as petrol — so the whole saving with this car comes from charging at home on a tariff with a cheap window.
Charging 8,000 miles a year at home, the BYD Seal needs about 7 kWh a night on average — 1h of charging at 7 kW — so it fits comfortably inside a five- or six-hour window. Our pick is EDF GoElectric: about £19.27 a month for charging, £424 a year less than the price cap. EDF GoElectric is fractionally cheaper per kWh and works with any charger, but has a higher peak rate and exit fees. If you can't charge overnight, OVO Charge Anytime gives 14p at any time of day.
Run your own numbers, including public charging and your petrol comparison, in the EV charging cost calculator.
From empty, the Design RWD (82.5 kWh) version needs about 92 kWh from the socket once charging losses are included. On Intelligent Octopus Go (8p) that is around £7.33; on the standard price cap it is around £24; at a 79p public rapid charger about £72.
Using EV Database's real-world figure of 3.6 mi/kWh: about 2.5p per mile on an 8p EV tariff, 8.2p on the price cap and 24.6p on public rapid chargers. A 42 mpg petrol car at £1.38 a litre costs about 14.9p per mile.
On a 7 kW home charger the 82.5 kWh battery goes from empty to full in roughly 13h. Most nights you'll only be topping up 20–40%, which takes 4h or so and fits inside any EV tariff window.
For an 8,000-mile-a-year driver charging at home, Utility Warehouse EV gives the lowest charging bill in our comparison, but it has conditions. EDF GoElectric is the best mainstream choice, costing about £19.27 a month for charging against £55 on the price cap.
Battery and efficiency data: EV Database (real-world). Charging power: manufacturer specifications. Last checked 29 September 2026.