BYD Dolphin vs MG4: Home Charging Comparison
Side-by-side comparison of home charging for the BYD Dolphin (60.4kWh, 427km range) and MG4 (64kWh, 450km range). Which charges faster, which costs less, and which charger brand works best for each.
| Spec | BYD Dolphin | MG4 | Winner |
|---|---|---|---|
| Battery capacity | 60.4kWh | 64kWh | MG4 |
| Range (WLTP) | 427km | 450km | MG4 |
| Max AC charge | 7kW (1-phase) | 11kW (3-phase) | MG4 |
| 7kW charge speed | 40km/hr | 39km/hr | BYD Dolphin |
| 20-100% at 7kW | 6.9 hrs | 7.3 hrs | BYD Dolphin |
| Efficiency | 15.5kWh/100km | 15.7kWh/100km | BYD Dolphin |
| Price from (indicative) | $30,000 | $30,000 | MG4 |
Prices are indicative NZ pricing, June 2026. Verify with the dealer.
Charging Cost Comparison by Region
| Region | BYD Dolphin (full charge) | MG4 (full charge) | BYD Dolphin /100km | MG4 /100km |
|---|---|---|---|---|
| AKL | $17 | $18 | $5.4 | $5.5 |
| NTL | $17 | $18 | $5.6 | $5.7 |
| WKO | $17 | $18 | $5.4 | $5.5 |
| BOP | $17 | $18 | $5.4 | $5.5 |
| GIS | $18 | $19 | $5.7 | $5.8 |
| HKB | $17 | $18 | $5.6 | $5.7 |
| TKI | $17 | $18 | $5.6 | $5.7 |
| MWT | $17 | $18 | $5.6 | $5.7 |
| WGN | $17 | $18 | $5.4 | $5.5 |
| NSN | $17 | $18 | $5.6 | $5.7 |
| MBH | $17 | $18 | $5.6 | $5.7 |
| WTC | $18 | $19 | $5.9 | $6.0 |
| CAN | $16 | $17 | $5.3 | $5.3 |
| OTA | $17 | $18 | $5.4 | $5.5 |
| STL | $16 | $17 | $5.1 | $5.2 |
Electricity only, at regional average residential rates (33-38c/kWh band). Both vehicles also pay identical Road User Charges of $7.60 per 100km, so RUC does not change the head-to-head result. Overnight EV power plans can lower the electricity cost.
Best Charger for Each Vehicle
BYD Dolphin
Single-phase onboard charger limited to 7kW.
MG4
Supports up to 11kW three-phase AC charging.
BYD Dolphin vs MG4 FAQ
Which charges faster at home, BYD Dolphin or MG4?
The BYD Dolphin charges faster on a standard 7kW home charger, taking 6.9 hours from 20% to 100% compared to 7.3 hours for the MG4.
Which is cheaper to charge, BYD Dolphin or MG4?
The BYD Dolphin is more efficient at 15.5kWh/100km, making it slightly cheaper to charge per kilometre. For a typical 15,000km year at the NZ average power price of about 35c/kWh, the difference is about $11 per year. Both pay the same Road User Charges ($76 per 1,000km), and both cost far less per kilometre than a petrol car at home-charging rates.
Do the BYD Dolphin and MG4 use the same charger?
Both the BYD Dolphin and MG4 use Type 2 AC charging, so any home EV charger sold in New Zealand works with both vehicles. The key difference is that the MG4 supports three-phase charging (up to 11kW) while the BYD Dolphin is single-phase only (7kW max).
Get Your Home Charger Installed
Whether you chose the BYD Dolphin or MG4, PumpSwap matches you with local electricians for free, obligation-free quotes.
Get Free Quotes