MG4 X Power Vibe/Hum 65 to 75mph

[nostraduckus]

Just found this interesting article - Identifying and Calculating Driveshaft Vibration Frequencies

 

[Seaton91]

Took ours out today at motorway speeds for the first time (on an abandoned airfield that I own obviously). 66-77 = vibe but not horrendous. Definitely eases as you decelerate e.g. slowing from 77 the vibe dies away quickly, pick back up before 66 and it starts again.

Definitely noticeable compared to ID.3, as is tyre noise. Not noticeable enough to reject but I'm going to tell lease company about it and follow steps others have mentioned here, even if it is wasted endeavor. One of us will hopefully be the straw that broke the camel's back!

 

[Nicolas007]

In France, it seems that the Xpower models delivered since the beginning of February do not have the vibrations...

 

[Bricktop X PWR]

In France, it seems that the Xpower models delivered since the beginning of February do not have the vibrations...

So to be clear m8 in January you said, and I quote

"Vibration, that's a big problem. In France, owners are starting to launch legal proceedings.

MG France don't have any solutions for steering wheel vibrations"

Do you have any evidence for your latest post?

 

[CarbonEV]

I've noticed in mine that when it hit 70mph I can feel the vibration but after 5-10 mins of driving, it "goes away" - at least, I would say, about 90-95% of it goes away.

 

[powerfulx]

In my Subaru, i can cause the same feeling by going on and off power, it has a sloppy drive line , meaning for a second the front wheels are slightly out sync to the front, result is a shudder. In the xpower, i feel it more as a constant shudder.

Well well well, looky here, Kia EV6 GT , same issue !

Vibration between 65-70mph

Hi all, Picked up my Wind AWD 2 weeks ago and love it, aside from the usual minor quirks. I've noticed a slight vibration, seems like it's from the front end, between about 65-70mph. Happens on a smooth road, fades up around 72. No other associated symptoms. Anyone notice something similar...

www.kiaevforums.com

 

[Bricktop X PWR]

Well well well, looky here, Kia EV6 GT , same issue !

Vibration between 65-70mph

Hi all, Picked up my Wind AWD 2 weeks ago and love it, aside from the usual minor quirks. I've noticed a slight vibration, seems like it's from the front end, between about 65-70mph. Happens on a smooth road, fades up around 72. No other associated symptoms. Anyone notice something similar...

www.kiaevforums.com

Thread 'Not MG Specific then.......' https://www.mgevs.com/threads/not-m...mgevs.com/threads/not-mg-specific-then.15818/

Everyone's at it m8 ?

 

[Seaton91]

Anyone got the time to work out what the common theme is between the brands/ any that don't have vibrations at all?

 

[Bricktop X PWR]

Anyone got the time to work out what the common theme is between the brands/ any that don't have vibrations at all?

I did say elsewhere m8, that I wouldn't be surprised if they get the motors and driveshafts all from the same place???

I'm stripping and greasing my rear brakes tomorrow, and will take down the undertray to get a better look at the motor.

Just to see if there might be a maker's mark other than SAIC on it.

 

[Seaton91]

I did say elsewhere m8, that I wouldn't be surprised if they get the motors and driveshafts all from the same place???

I'm stripping and greasing my rear brakes tomorrow, and will take down the undertray to get a better look at the motor.

Just to see if there might be a maker's mark other than SAIC on it.

Aye I remember at least one other brand or car at least that someone on here had said had had similar issues- I'm sure Google will throw up enough to get a decent idea.

Was just going to play ex-VW fan boy and say the ID.3 was fine so wondered if all VAG the same, but Enyaq appear to be exactly the same as MG4! See attached:

The plot thickens...

 

[Seaton91]

Aye I remember at least one other brand or car at least that someone on here had said had had similar issues- I'm sure Google will throw up enough to get a decent idea.

Was just going to play ex-VW fan boy and say the ID.3 was fine so wondered if all VAG the same, but Enyaq appear to be exactly the same as MG4! See attached:

The plot thickens...

If you've not already searched "electric car vibration 65 mph" I would strongly recommend it. It's basically a list of forums for just about every EV, all complaining about the same thing.

Someone somewhere must have worked this out

 

[Freeagain21]

I've just checked in with my dealer - they're still waiting to hear back from MG on next steps after all previous attempts to resolve the issue have failed.
* Reminder - so far we've tried steering wheel damper, wheel alignment, wheel balancing, complete wheel swap (for a Trophy LR).

 

[JonnyG]

I've just checked in with my dealer - .

Thanks for the update ... I'm sure it's appreciated by all ?

 

[powerfulx]

I have noticed all test drives had the charge in the 60% ish range. I wonder .... the inverters is what im leaning on now. I suspect its syncro between the two.

 

[siteguru]

The front motor has its own inverter, rather than a second feed from the main inverter?

 

[powerfulx]

The front motor has its own inverter, rather than a second feed from the main inverter?

I havent actually looked, but if is in the one unit. They would still be logically seperate.

 

[nostraduckus]

What's your thoughts on this FacePoop post!

 

[powerfulx]

What's your thoughts on this FacePoop post!
View attachment 24202

That sounds fishy and would be something a dealer might say to keep customers happy.

 

[salty]

What's your thoughts on this FacePoop post!
View attachment 24202

Like to think that was true, but it's on Fakebook, so possibly take it with a pinch of salt! ?

 

[powerfulx]

On a longer drive tonight, I discovered that the vibration doesn't care about being in dual motor mode or single remote mode in Eco. I can definitely feel the vibration coming through the steering wheel and coming from the front of the vehicle. When listening for sounds in the back there is nothing. I can sort of find a little ease up on the vibration, when there is neither acceleration or deceleration. I have seen a recent issue with the Hyundai ionic 5 AWD, where it turned out to be the wheel bearings. Something of which we have not tried yet. In the Hyundai, they changed out the motors. They did complete balances of the tires steering etc. Then they put a device which senses vibrations in different parts of the vehicle, and then use that to identify where the vibration was coming from. Quite possibly we might be able to solve this with a fairly cheap solution. If it doesn't indeed fix my car, I will then be looking for MG to pay me for this process.