MG MG4 (Extended Range, 77 kWh) charging cost
The MG MG4 (Extended Range, 77 kWh) has a 74.4 kWh usable battery. A full charge at home costs about £21.58 at the current Ofgem electricity rate of 26.11p/kWh (1 July to 30 September 2026 (Ofgem price cap)), versus £46.87–£68.45 on a public rapid charger.
MG MG4 (Extended Range, 77 kWh) full charge: ~£21.58 at home (26.11p/kWh), £40.18 on public slow/fast, £46.87–£68.45 on rapid/ultra-rapid. Usable battery 74.4 kWh.
MG MG4 (Extended Range, 77 kWh) charge-cost calculator
The MG MG4 (Extended Range, 77 kWh) has a usable battery of 74.4 kWh. Set a charge window to see the cost at home (26.11p/kWh) vs public rapid charging.
Adding 52.1 kWh (70% of the pack)
- At home
- £15.11
- 26.11p/kWh
- Public rapid
- £32.81–£47.91
- 63–92p/kWh
Home figure divides by 0.9 for AC onboard-charger losses. Public rapid is billed per kWh delivered at the PAYG tariff. Usable capacity from EV Database.
Full-charge cost: home vs public
| Where | Rate (p/kWh) | Full 74.4 kWh charge |
|---|---|---|
| Home (Ofgem cap) | 26.11p | £21.58 |
| Slow / Fast (3–49 kW) | 54p | £40.18 |
| Rapid / Ultra-rapid (50 kW+) | 63–92p | £46.87–£68.45 |
Home full charge = (usable kWh ÷ 0.9) × 26.11p ≈ 82.7 kWh from the meter. Public figures are billed per kWh delivered.
How the home cost is worked out
- Usable battery: the MG MG4 (Extended Range, 77 kWh) holds 74.4 kWh usable.
- Account for AC losses: 74.4 ÷ 0.9 ≈ 82.7 kWh drawn from the meter.
- Multiply by the unit rate: 82.7 kWh × 26.11p ≈ £21.58.
Frequently asked questions
How much does it cost to fully charge a MG MG4 (Extended Range, 77 kWh)?
The MG MG4 (Extended Range, 77 kWh) has a 74.4 kWh usable battery. At the Ofgem home rate of 26.11p/kWh (1 July to 30 September 2026 (Ofgem price cap)), a full charge costs about £21.58 including ~10% AC charging losses. On a public rapid charger (63–92p/kWh) the same charge is £46.87–£68.45.
How much does it cost to charge a MG MG4 (Extended Range, 77 kWh) on public chargers?
Public slow/fast charging (54p/kWh) costs about £40.18 for a full 74.4 kWh charge, and rapid/ultra-rapid charging (63–92p/kWh) costs £46.87–£68.45. Figures are Zapmap weighted-average UK PAYG prices for May 2026.
Is it cheaper to charge a MG MG4 (Extended Range, 77 kWh) at home?
Yes. Charging the MG MG4 (Extended Range, 77 kWh) at home costs about £21.58 for a full charge versus £46.87–£68.45 on a public rapid charger — roughly 2× cheaper per kWh. An overnight EV tariff would be cheaper still.
Charging cost for other EVs
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Usable battery capacity: EV Database useable-battery cheatsheet (read 2026-06-25): "MG MG4 Premium Extended Range" = 74.4 kWh useable. Home electricity rate from Ofgem — Energy price cap unit rates and standing charges (1 Jul–30 Sep 2026) (cap period 1 July to 30 September 2026 (Ofgem price cap), fetched 2026-06-25). Public tariffs from Zapmap — UK EV charging price index (weighted-average PAYG) (May 2026). Ofgem figures © Ofgem, Open Government Licence v3.0. Battery capacities © EV Database (independent aggregator). Public tariffs © Zapmap. All reproduced as factual reference data. Ofgem · EV Database · Zapmap.