Cost to charge an electric car in Hong Kong (2026)
As of August 6, 2026, charging an electric car at home in Hong Kong costs about HK$18.66–HK$23.69 per 100 km (HK$1.50/kWh, including the ~12% AC charging loss) across the 7 electric models we price — versus about HK$222.88 of petrol for a typical 7 L/100 km car. Home charging only; every model below links to its full cost page.
Per 100 km at home — Hong Kong
| Electric model | kWh/100km | Per 100 km at home |
|---|---|---|
| BYD Dolphin Standard | 10.95 kWh/100km | HK$18.66 |
| BYD Atto 2 Premium | 12.47 kWh/100km | HK$21.26 |
| BYD Atto 3 Superior | 12.6 kWh/100km | HK$21.48 |
| BYD Seal Extended Range | 12.7 kWh/100km | HK$21.65 |
| Tesla Model 3 Premium Rear-Wheel Drive | 13.4 kWh/100km | HK$22.84 |
| BYD Sealion 7 Standard | 13.8 kWh/100km | HK$23.52 |
| Tesla Model Y Premium Rear-Wheel Drive | 13.9 kWh/100km | HK$23.69 |
A typical 7 L/100 km petrol car: HK$222.88/100 km.
Home vs public charging in Hong Kong — the 5 cheapest EVs to charge
Public and DC fast charging in Hong Kong is billed per session by each network and varies widely, so we model it the way the kernel does on every cost page: 2.5× the home rate — about HK$3.75/kWh against HK$1.50/kWh at home. That is a planning estimate, not any network's tariff. Here is what it does to the 5 cheapest-to-charge models we price in Hong Kong:
| Electric model | Per 100 km at home | Public (≈2.5× home) | Extra per year if all-public |
|---|---|---|---|
| BYD Dolphin Standard | HK$18.66 | HK$46.66 | +HK$2,800 |
| BYD Atto 2 Premium | HK$21.26 | HK$53.14 | +HK$3,188 |
| BYD Atto 3 Superior | HK$21.48 | HK$53.69 | +HK$3,222 |
| BYD Seal Extended Range | HK$21.65 | HK$54.12 | +HK$3,247 |
| Tesla Model 3 Premium Rear-Wheel Drive | HK$22.84 | HK$57.10 | +HK$3,426 |
- BYD Dolphin Standard is the cheapest EV to charge in Hong Kong — HK$18.66 per 100 km at home — and at the public estimate (HK$46.66) it still beats the HK$222.88 of petrol a 7 L/100 km car burns over the same distance.
- A BYD Atto 2 Premium draws 12.47 kWh per 100 km, so home charging runs HK$21.26; at the public estimate (HK$53.14) it still beats the HK$222.88 of petrol a 7 L/100 km car burns over the same distance.
- For the BYD Atto 3 Superior, public-only charging would add about HK$3,222 a year at 10,000 km/year over charging at home (HK$21.48 vs HK$53.69 per 100 km); even then it stays under the HK$222.88 a 7 L/100 km petrol car needs.
- A BYD Seal Extended Range draws 12.7 kWh per 100 km, so home charging runs HK$21.65; at the public estimate (HK$54.12) it still beats the HK$222.88 of petrol a 7 L/100 km car burns over the same distance.
- For the Tesla Model 3 Premium Rear-Wheel Drive, public-only charging would add about HK$3,426 a year at 10,000 km/year over charging at home (HK$22.84 vs HK$57.10 per 100 km); even then it stays under the HK$222.88 a 7 L/100 km petrol car needs.
Even at the 2.5× public estimate, all 5 of these models still undercut the HK$222.88 of petrol a typical 7 L/100 km car burns per 100 km — in Hong Kong the charging case survives without a driveway. Our 5-year totals on each model page assume 80% home / 20% public charging at this same multiple — these two columns are the ends of that range.