Is the Speed Limit controlled when battery is low?

[Youngys1974]

I am a new MG4 XPower owner, and apart form a few minor issues it’s been very reliable!
I was returning home tonight on 5% battery and suddenly the car braked sharply and wouldn’t allow me to drive above 40 mph….
I was doing 50 at the time and it certainly surprised me….
No speed limiter was switched on.
If I had been on a motorway, it could have been quite dangerous!
Is this a feature to preserve battery life?
Or another issue??

 

[Vingnut]

Yes it's for preserving the battery, and because of that no one has anything to do on a motorway with less than 7-8% soc left (soc = state of charge).

This car (and most other EVs) do not have linear % soc shown, 100-99% soc has way way more energy than 10-9% soc, so be aware those % soc are going wery fast at the end. Especially if it's cold.
Generally one should aim to not go under 10% soc unless one are of fast roads and know for sure one will reach a charger before 5% soc.