Global software update for the MG3 hybrid+ is coming...

[Pe3k]

Hi, I've read about the upcoming global update for MG3 hybrid+ models, based on ZS hybrid. The update will arrive sometime in the second half of 2025. Do you know anything more about it?
Source:

MG ZS HYBRID+ Gets Fix to Hybrid System, MG3 Hybrid Fix Also Confirmed

MG’s ZS HYBRID+ update refines power and battery management after CarSauce tests, with MG3 updates also planned.

www.carsauce.com

 

[MG Clive]

This will be a much welcomed update.

 

[bk227865]

How do i know what software release i am running ? R.... ?

 

[Mikel14]

Hi, I've read about the upcoming global update for MG3 hybrid+ models, based on ZS hybrid. The update will arrive sometime in the second half of 2025. Do you know anything more about it?
Source:

MG ZS HYBRID+ Gets Fix to Hybrid System, MG3 Hybrid Fix Also Confirmed

MG’s ZS HYBRID+ update refines power and battery management after CarSauce tests, with MG3 updates also planned.

www.carsauce.com

If it's based on the ZS hybrid+ they can keep it.
My son's ZS hybrid+ regularly rev's up to 5000rpm when on hill's or slight inclines, where as my MG3 hybrid doesn't have any over reving.
I'm happy with the way mine is running, so no thanks to the update.

 

[bk227865]

I don't know if it is "the" update but my car got updated and notice some differences:

• The battery seems not to deplete as far as it used to anymore, it stays around 3 bars minimum.
• During driving the engine seems to work a bit harder to keep the battery level up though.
• And it feel like it drives a bit less in pure EV mode.

But, all in all, it now behaves more like i expected a hybrid would behave, and less like a wannabe pure electric car that needs to recharge itself every few minutes.

Can't judge hills and mountains as they are not close. But on bridges and on ramps , no problems.

 

[copilux]

I don't know if it is "the" update but my car got updated and notice some differences:

• The battery seems not to deplete as far as it used to anymore, it stays around 3 bars minimum.
• During driving the engine seems to work a bit harder to keep the battery level up though.
• And it feel like it drives a bit less in pure EV mode.

But, all in all, it now behaves more like i expected a hybrid would behave, and less like a wannabe pure electric car that needs to recharge itself every few minutes.

Can't judge hills and mountains as they are not close. But on bridges and on ramps , no problems.

agree

 

[stasko]

I don't know if it is "the" update but my car got updated and notice some differences:

• The battery seems not to deplete as far as it used to anymore, it stays around 3 bars minimum.
• During driving the engine seems to work a bit harder to keep the battery level up though.
• And it feel like it drives a bit less in pure EV mode.

But, all in all, it now behaves more like i expected a hybrid would behave, and less like a wannabe pure electric car that needs to recharge itself every few minutes.

Can't judge hills and mountains as they are not close. But on bridges and on ramps , no problems.

Hey brother, do you know which firmware that was?

 

[JonboyMG3Hybrid]

If it's based on the ZS hybrid+ they can keep it.
My son's ZS hybrid+ regularly rev's up to 5000rpm when on hill's or slight inclines, where as my MG3 hybrid doesn't have any over reving.
I'm happy with the way mine is running, so no thanks to the update.

yours does not over rev, oh, must be the only one that does not then, as thats what charges the battery, the over revving is normal and part of the system to make it run properly, you can always take your foot off the pedal for a millisecond and the revs would drop as it does on mine, then it goes to over rev on a flat surface rather than a hill !

 

[Mikel14]

yours does not over rev, oh, must be the only one that does not then, as thats what charges the battery, the over revving is normal and part of the system to make it run properly, you can always take your foot off the pedal for a millisecond and the revs would drop as it does on mine, then it goes to over rev on a flat surface rather than a hill !

Oh, I must be so lucky
I think you'll find it's luck of the draw with the over revving as there are loads of people who don't have it.

 

[DEx]

I also have no issues, the battery never goes under 3 bars. On few occasions it goes 3600rpm but only like for 5 sec.
However I am waiting for FW update since there are terrible mistranslations for my language in the infotainmnet and some quirks need to be adressed. Like the inability to go to climate control directly when using android auto and many more.

Would be nice to have the ability to check and maybe update the FW by the user.

 

[viptr]

Hi everyone,

Just wanted to share some important info based on my personal experience and discussions with several dealerships.

As far as I’ve been told, there are currently three different software versions (or batches) that have been released for the MG3 Hybrid+. The first batch, which came with the earliest vehicles, is by far the most problematic.

Here’s what I went through with that initial version:

• When the battery level dropped to 2 bars, the system would suddenly cut off power.
• A few seconds later it would “unlock” again and start giving power back — very unpredictable.
• When the battery was fully depleted, the gearbox would constantly shift back and forth, completely ruining the driving experience.
• The car became extremely hard to drive in uphill conditions — abrupt cutoffs, strange torque surges, and random gear changes.

After many complaints, MG released two later versions of the software that improved things significantly. However, these updates aren’t being rolled out automatically. Most dealers won’t apply them unless the customer insists, because MG hasn’t officially tied each version to specific VIN numbers. This puts pressure on the dealers — they’re afraid that installing the update outside of MG’s diagnostic system might cause issues, and they’ll be held responsible for any repairs.

So for now, many are waiting for a global MG update that will officially close the chapter on these early problems.

As for me, I was unlucky enough to buy a car from the first release batch with the buggy software. I had serious issues on uphill roads, including:

• Sudden loss of power mid-climb
• Jerky gear changes
• Unpredictable torque delivery when the battery recharged, followed by another sudden loss when it drained again

Eventually, after months of frustration and back-and-forth with my dealership, they agreed to install one of the newer updates (I don’t know exactly which version).

Now the car is much smoother:

• Gear shifts are more consistent
• The engine properly downshifts on inclines (it sounds louder, but that’s expected and correct)
• Power delivery is way more balanced between battery and engine

The only downside now is that the engine kicks in earlier during acceleration, which means you don’t feel the same instant torque as before. But honestly, that’s a very fair trade-off, because at least now I can safely drive on highways without fearing sudden slowdowns.

I had two near-accidents before the update due to power loss on inclines.

So if your car doesn’t show these severe symptoms, it’s likely you already have a later version. Just hang tight — when MG releases the final public update, everything should be resolved.

Hope this helps!

 

[stasko]

Hey @viptr , I think it's all about the unique design and implementation of this particular hybrid system. I just had a 1200km trip in all kinds of roads (exploring Peloponnese) and my main fear was the inclined twisty roads from what I've read - but nothing unexpected happened. ~3k rpm on heavy charging mode and/or inclines, and ~1.1-1.6k rpm on normal charging mode. I've only noticed the rpms to go ~4.5k when on 100% throttle during overtakes, which is again expected. The only kind of annoying thing is the gear changes (depending on speed and not load as far as i can say) that sometimes doesn't make sense, but most times you can 'reset' it by playing a bit with the throttle.

I honestly cannot complain for what the car is meant to provide. I admit that there's a 'new' unique driving style but nothing problematic or dangerous. I got it in Greece this July, but i'm not really sure of what 'batch' this could be - when did you get yours? Also, do you have any decent authorized dealers/garages to recommend in Athens?

 

[lucabellomi]

Purtroppo, oggi sono andato dal concessionario MG per un tagliando e, quando ho chiesto di aggiornare il firmware, mi hanno stampato una stampa in cui MG affermava che il problema di riduzione di potenza in salita era normale e quindi non richiedeva un aggiornamento. Questa è una brutta cosa.

 

[MG Clive]

Purtroppo, oggi sono andato dal concessionario MG per un tagliando e, quando ho chiesto di aggiornare il firmware, mi hanno stampato una stampa in cui MG affermava che il problema di riduzione di potenza in salita era normale e quindi non richiedeva un aggiornamento. Questa è una brutta cosa.

Please translate to English before posting to the forum @lucabellomi, thanks.

 

[lucabellomi]

Sorry but the browser tranlates it automatically. I wrptw in English

 

[All that Jazz]

Sorry but the browser tranlates it automatically. I wrptw in English

For those who don't know how to use google translate:

Unfortunately, I went to the MG dealer today for a service, and when I asked for a firmware update, they printed out a message stating that the power reduction on hills was normal and therefore didn't require an update. This is a bad thing.

 

[johnbristol1966]

That's weird as MG is engaging with my MG dealer to upgrade my software with one that will stop the hill issues. They have already tried one, and it improved fuel consumption hugely, cured low power on hills, but increased the over revving that occurs on any uphill. They are still sorting it, and the car is going back in next week for another update.