Over-revving MG3 Hybrid+ engine

[theforestdweller]

Is this the promised upgrade that MG are releasing under the radar to avoid too much publicity I wonder. It would help if we knew the software version of a vehicle both before and after any update.

 

[johnbristol1966]

Moderator, rather than pick up Raquel Barros Silva's post on page 4, about posting in non - English, are we not going to pick them up on using a mobile to video the speed and rev display while driving, as can obviously be seen in the reflection?

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[bk227865]

New info on the topic. There is new youtube video addressing this problem with MG3 climbing mountains and also engine braking on descents.

I don't speed understand Italian, so I used NoteGPT AI tool to translate it to English, and it seems that most of the concerns raised here are true. Some quotes:

06:14, uphill:
"It's definitely not as powerful going uphill, since we don't have all the horsepower we usually do with this car on flat roads. So, if you live in the mountains, it won't give you any trouble climbing, but you definitely won't get the same performance as when you're driving on flat terrain. That's something to keep in mind"

08:38, downhill:
"I've gone about 7 km, and now the battery is almost dead because it's showing only a recovery of 1 or 2 kW. So, the engine braking is nearly nonexistent, and I really have to brake a lot. If the combustion engine kicks in, the car might brake more effectively. I think this is definitely a flaw that shouldn't be overlooked when using this MG3"


So is seems that maybe other hybrid vehicles have it sorted out, but maybe MG is not one of them

To be clear, I own MG3 and I really like this car, but flaws like this seems like it has been put really quick into production, without some serious testing and refining. Service manual that we have linked here on forum is also pretty low quality and with some mistakes, and even small things, like translations, in car screen and app, which are sometimes bad language (some defaults to English while I have Polish selected, but I've seen today also some other language in menu). But yeah, it's a Chinese car after all

All in all Not to bad

It's an interesting review, alright, but it needs to be taken in the context that it was a 14-kilometer climb with an altitude difference of 10,000 meters, so it's extreme. On the descent, he traveled 6-7km before he noticed an issue. Note how the diesel van in front also had to use its brakes despite significantly better engine braking. Granted if an update could be included where maybe a hill-decent feature could be incorporated onto one of the star buttons, that might make things easier in the circumstances that he describes, but for the most part, unless you live in a mountainous area, I would say that there is no need to panic at this stage. So, in normal circumstances, most people won't encounter any problems.

I would agree , all in all not bad for what basically is a budget city car driving out of it's element.
I just went to pick up my new mg3 and been driving around in it , found nothing that would make me want to go back to the dealer , on the contrary. Now i feel i should have ditched my old regular petrol VW a lot sooner .

 

[mg3 owner Atherton Qld Au]

Totally agree, YT videos or not, I find it hard to believe, it struggles up hills. ?

My 2025 MG3 Essence Hybrid+ is experiencing that problem, is there any one in North Queensland Australia with the same issue?

 

[gian]

My 2025 MG3 Essence Hybrid+ is experiencing that problem, is there any one in North Queensland Australia with the same issue?

you need to do the update,
you'll see that then, everything will be fine.

 

[Minimaddad]

There have been no posts on this subject for the last 10 days. Is this an indication that the previously described update being rolled out by MG is resolving the problem?

 

[han]

Several YT videos show how difficult it is for the MG3's hybrid engine to climb high mountains.
In fact, it seems that when the high-voltage battery is empty, the combustion engine no longer delivers enough power to climb the mountain. Some people talk about having to park on the side of the road and wait 20 minutes for the regenerator to refill the high-voltage battery.
There is also talk of a software update that would have rectified this problem.

Similarly, on steep downhill gradients, if the high-voltage battery is full, the driver would be forced to coast and use the conventional brake to apply full braking without the aid of the engine brake.

Can anyone tell us about their experience and sort out the true from the false?

Yeah,i have similar issues climbing mount baw2,car still takes me there..when the battery low,its only used engine..and its struggling a lot.. try to change regen to high but when i change it i have no more downhill to charge..

 

[Raquel Barros Silva]

There have been no posts on this subject for the last 10 days. Is this an indication that the previously described update being rolled out by MG is resolving the problem?

Good afternoon, the problem persists, even though the brand says that it is not a problem and that this situation is normal for all cars of this type. Mine supposedly already has all the available updates and yet it continues to behave the same way. I know several people who are also in the same situation and without any solution. I'm going to decide to change my car because I don't feel confident driving it. In my case, the car has lost power on a flat road, and when accelerating to enter a motorway, I almost had an accident. I think it also depends a lot on the route each person takes, because if the battery is fully charged this won't happen. However, specifically for me, this loss of power also happens when the battery is at 50% charge, I have already confirmed this because I have been driving with the display on the battery status.
It's a shame, because if it weren't for this situation it would be a great car.