Cost to charge a MG 4 on IONITY
A 20% → 80% top-up costs £29.25 at IONITY's 79.0p/kWh PAYG rate, delivering 37.0kWh and roughly 132 miles of range — about 22.1p/mile.
Cost by SOC range (PAYG)
| Session | kWh added | Cost | Range added | Cost/mile |
|---|---|---|---|---|
| 10 → 80% | 43.2kWh | £34.12 | 154 mi | 22.1p/mile |
| 20 → 80% | 37.0kWh | £29.25 | 132 mi | 22.1p/mile |
| 0 → 100% | 61.7kWh | £48.74 | 220 mi | 22.1p/mile |
With IONITY's subscription
IONITY's IONITY Passport Power brings the per-session cost down to £15.92 for a 20 → 80% top-up. The £10.50/month fee makes sense if you regularly use IONITY — see the IONITY page for break-even maths.
How long will it take?
The MG 4 peaks at 135kW DC; IONITY's top chargers go up to 350kW. The session is limited by whichever is lower — in this case 135kW.
A 10 → 80% top-up takes around 27m, delivering an average of 95.0kW across the session.
Open the time calculator for a different SOC range, charger speed, or ambient temperature.
Worth knowing
- IONITY accepts contactless bank card payment at all post-November-2024 chargers, so no app is required.
- Plug type required: CCS. The 4 uses CCS for DC charging.
- Last verified tariff: 2026-04-01. Source.