The MG4 is a genuinely good small electric car and one of the better-value used EVs in Australia. It also comes with a warranty position that owners consistently misunderstand, and that misunderstanding is worth money.
MG publishes no minimum capacity percentage for its high-voltage battery. The warranty covers manufacturing defects for 7 years or 150,000 km. There is no 70% floor, no stepped curve, no published threshold of any kind. If an MG4's pack drifts to 72% over six years, MG has made no commitment about it — that is normal wear, not a defect.
Compare that with Tesla, BYD, Kia, Polestar and Volkswagen, all of which publish a floor. On an MG4 the measured figure is not one input among several. It is the only capacity information anybody will give you.
The packs Australia got
| Variant | Years | Usable kWh | Claimed range | Real-world consumption |
|---|---|---|---|---|
| Excite 51 | 2023–2025 | 50.8 (51.0 gross) | 353 km | 16.9 kWh/100km — modelled |
| Excite 64 / Essence 64 | 2023–2026 | 61.7 (64.0 gross) | 452 km (AU) | 20.0 kWh/100km — measured, Australia |
| Long Range 77 / Essence 77 | 2024–2025 | 74.4 (77.0 gross) | 565 km | 15.4 kWh/100km — measured, road test |
| XPOWER | 2024–2026 | 61.7 (64.0 gross) | 405 km (AU) | 19.0 kWh/100km — manufacturer claim |
Three genuinely different pack sizes across cars that all say "MG4" on the boot. A 24 kWh spread between the smallest and largest.
The consumption figure worth pausing on
The Australian Automobile Association measured the 64 kWh MG4 at 20.0 kWh/100 km — the highest measured figure of any car in our data set for its size.
At 61.7 kWh usable, that is about 308 km of real-world range on a healthy battery, against a 452 km claim. Apply a 10% capacity loss and you are near 277 km.
That is still a perfectly usable commuter car. But someone buying on the 452 km number and discovering 300 has not been told the truth by the brochure, and the battery is not at fault.
The pre-August-2024 warranty problem
If you are buying an MG4 retailed before August 2024, be aware that MG's own published pages disagree on the battery distance limit — one says unlimited kilometres for non-commercial use, another says 150,000 km. We are not going to guess which applies to your car. Get it in writing from MG before you commit. Full detail: MG battery warranty in Australia.
What to check before you buy
Which pack — 51, 64 or 77 kWh, because this changes everything downstream
Measured State of Health, which on an MG is the only capacity information in existence
Cell voltage spread
Date of first registration, which determines which warranty terms apply and whether you are in the conflicting window
Real-world range at current capacity, especially on the 64 kWh car
Capacity and consumption data verified 13 September 2026. "Measured" figures come from the Australian Automobile Association's Real-World Testing Program or a published Australian road test, as noted per row; "modelled" figures are EV Database estimates.