MY MG4 Crashed itself Is it Software related? Suggestions please

[JDPlays]

So I'll start with this forum has been invaluable and I've been reading bits and pieces for the last 6 months thank you to every members hard work out there!

Now the back story, bought a MG4 Excite (this is the BASE model in Australia and has the 51 kWh battery in Feb 2025, knowing it was a 2024 Model.
Was overall pleased with the car, I love diving a EV but have had constant ongoing problems with the Lane Keeping Assist along with the Head On Collision Detection, including a number of emergency breaking incidents without another car on the road anywhere near us at the time!

It has gone back for software updates in May 2025 to 'fix the problem"
I was told the software had been updated and they had re-calibrated the camera system so it should be fine. Car was much better to drive less false positives with the collision system, but the Lane Keeping Assist was still a little aggressive

Then in November the App - NOT THE CAR reported a break system fault, and another alert about the front right tyre status was abnormal

The dealer couldn't look at it till Jan 6th

After picking up the car on Jan 8th they told us that the camera mount was replaced (its a tiny bit of flimsy plastic his words not mine) and they had updated ALL the software, along with going through all the recalibration steps and now the car should work perfectly! and if we had any issues we should contact them back and they will book it in for a extended amount of time and do a live technical check with MG Australia

On the way home someone pulled out right in front of us and the Head On Collision Detection system did NOTHING, and we have seen it react to a car that's slowing down 20m in front of us!
We called the dealership the second we got through the door and they said they would talk to MG Technical and get back to us with a plan moving forward

2 Weeks later on the 22nd of Jan the cars Lane Keeping Assistant Dragged the wheel to the right harder than it ever has before, clipping a medium strip island beating up both of the right rims, and also bending the whole front right suspension & steering arms.

Now the interesting bit, The software i have on the car since they updated it in May is
MOU Version

SWI131-29958-1100R05

- Which is believe is the version the car originally shipped with in Australia
MCU Version

-125.1.3.0

- thats NEGATIVE version 125

I have attached images of the versions from the car system, along with version numbers from inside the engineering menu again Big thank you to everyone on the forum for working this stuff out and posting it!



So I wanted to ask as I've never heard of a NEGATIVE version number, and as far as I can tell there is no -125.13.0 version of MCU for the MG4 in any variant, what are the chances that someone loaded the wrong software on the car for possibly a completely unrelated car, and this has caused the Lane Keeping Assist to go nuts and drag us into the medium strip?

If you have ANY suggestions of what i should do next PLEASE post them!

I have reached out to MG Australia via their live support - Didn't answer my question, their phone line - Either always engaged OR have sat on hold for 3h+ and never been answered, and also email to get not even a automated response!

The Dealership wants to wash their hands of the whole thing and have me file a insurance claim, which is going to rise my premiums by quite a lot i imagine, for a fault that not my own, so I'm here asking for any suggestions someone else might have.

 

[T1 Terry]

First, I would keep all the information you have gathered from the vehicle to yourself, save complications in the preliminary stages.
Personally, I'd contact your state version of Fair Trading via email and CC in your dealership and MG Australia and your insurance company explaining what has happened and will they be willing to take up the case as you feel this vehicle is unsafe to drive and MG do not seem to be able to fix it.

I would be looking for a replacement new car, MG have already had it in twice and couldn't fix it, it is dangerous now to the point it has cause vehicle damage and you were fortunate that there was something there to stop a potential head of crash .......

I have a very low odometer reading 2024 MG4, I bought in South Australia at a salvage auction, it was deemed a Stat write-off because it had taken out a white post with the right front corner of the car.
This means it must have crossed to the other side of the road, and left a core sample of the white post in the threaded hole that is meant to take the emergency towing eye attachment, so it wasn't a low speed crash.
It folded the bumper support panel into the tyre, bent the lower control arm to a 90* bend, popping the lower ball joint apart, and folded the right hand front guard back to the driver's door. Both front airbags were deployed, the seatbelts locked with the vehicle immobilised, internal audible warning and dash flashing to get out of the vehicle, along with the 4 way flashers going ...... the MG4 knew it was a serious crash ....

If this had happened on a section of road where there was an oncoming car, or truck, it might not have just been the car written off.

T1 Terry