BYD Sealion 7 Standard cost to own in Hong Kong — the true 5-year total
The BYD Sealion 7 Standard starts at HK$345,480. Over 5 years, owning one (EV) costs about HK$369,833 in Hong Kong as of July 10, 2026 — HK$6,164/month, HK$7.40/km — including depreciation, charging (with the ~12% charging loss most calculators ignore), maintenance, insurance, financing and licence fee. That's HK$11,319 more than a comparable Toyota Corolla Cross HEV over the same 5 years.
BYD Sealion 7 Standard incentives & grants
Hong Kong ended ALL EV first-registration-tax concessions on 31 Mar 2026 (previously HK$58,500 general / HK$172,500 One-for-One) — every EV price here already includes full marginal FRT (46%–132% brackets). What remains: e-PCs pay a lower annual licence fee (HK$2,114 vs HK$5,074 for a ≤1,500cc petrol car), which IS modeled in the totals. Source: HK Gov P2026022500288 (25 Feb 2026) · TD fee schedule.
BYD Sealion 7 Standard · Hong Kong · 5-year estimateHK$369,833 total · HK$6,164/mo · HK$7.40/km
Where the money goes
| Cost component | Electric · BYD Sealion 7 Standard | Hybrid · Toyota Corolla Cross HEV |
|---|---|---|
| Depreciation (estimated) | HK$224,562 (61%) | HK$149,607 (42%) |
| Charging / fuel | HK$15,290 (4%) | HK$73,074 (20%) |
| ↳ of which charging loss | 12% (~HK$1,835) | — |
| Maintenance | HK$10,000 (3%) | HK$16,000 (4%) |
| Insurance | HK$45,000 (12%) | HK$32,500 (9%) |
| Financing interest | HK$64,411 (17%) | HK$61,962 (17%) |
| Registration & fees | HK$10,570 (3%) | HK$25,370 (7%) |
| Total cost of ownership | HK$369,833 | HK$358,514 |
BYD Sealion 7 Standard specs & assumptions
- Starting price
- HK$345,480manufacturer
- Powertrain
- Electric
- Efficiency
- 13.8 kWh/100km (NEDC-derived)WLTP/NEDC
- Range
- 520 kmWLTP/NEDC
- Hong Kong electricity
- 1.50HK$/kWhCLP / HK Electric
- Annual km (assumed)
- 10,000Hong Kong average
Compare the BYD Sealion 7 Standard against any car, your km & your scenario
What the numbers say
The BYD Sealion 7 Standard costs about HK$369,833 to own over 5 years in Hong Kong — HK$6,164/month, HK$7.40/km at 10,000 km/yr — and depreciation is the biggest line: HK$224,562, 61% of the total (as of July 10, 2026).
- The Toyota Corolla Cross HEV holds a slim HK$11,319 lead over 5 years — a close result, but a real one at these rates and distances.
- The BYD Sealion 7 Standard pulls ahead of the Toyota Corolla Cross HEV if you drive more than about 12,000 km/yr.
- Where the BYD Sealion 7 Standard's HK$369,833 actually goes: depreciation HK$224,562 (61%), financing interest HK$64,411 (17%), insurance HK$45,000 (12%), charging HK$15,290 (4%), registration & fees HK$10,570 (3%), maintenance HK$10,000 (3%).
- Per km, that is HK$4.49 of depreciation and HK$0.31 of charging, with HK$2.60 for everything else — HK$7.40/km all-in.
- Charging vs the fleet: at HK$15,290 over 5 years the BYD Sealion 7 Standard sits within HK$1,219 of the HK$14,071 median for the 7 EVs we price — nothing unusual either way.
What we assume for maintenance
Assumed HK$2,000/yr for an EV at 10,000 km/yr — about HK$10,000 of the 5-year total above. On this market's assumptions an EV runs about HK$2,000/yr less in maintenance than a petrol car (HK$2,000 vs HK$4,000). See the methodology for sources; adjustable in the calculator.
Cost to charge the BYD Sealion 7 Standard at home
The BYD Sealion 7 Standard runs about HK$23.52 per 100 km at home — versus about HK$222.88 for a typical 7 L/100km petrol car. Home charging only (the ~12% AC charging loss is included); public DC fast-charging is billed per session by each network — often 2–3× the home rate — and isn't in these figures.
- Per 100 km at home
- HK$23.5213.8 kWh/100km + 12% charging loss × HK$1.50/kWh
- A typical 7 L/100km petrol car
- HK$222.88/100kmat HK$31.84/L — for comparison