MG4 X Power Vibe/Hum 65to75mph

UPDATE!

So after waiting what seemed like a lifetime...the dealership replaced the "warped' brake rotors and discs today and they advised the vibration was gone....now the test....

....I can honestly say I think it has resolved the issue!!

I did a 30 mile run on the A19 and on the way to my destination, the vibration still seemed to be there but no where near as strong, but then I took that it could be more the road against the tyres.....on the way back, i couldnt feel it at all bar the odd couple of gentle vibrations, which again I took is more from the road....so signs are looking very positive and the trip back was certainly more comfortable than before!
 
Last edited by a moderator:
Mennox said:
UPDATE!

So after waiting what seemed like a lifetime...the dealership replaced the "warped' brake rotors and discs today and they advised the vibration was gone....now the test....

....I can honestly say I think it has resolved the issue!!

I did a 30 mile run on the A19 and on the way to my destination, the vibration still seemed to be there but no where near as strong, but then I took that it could be more the road against the tyres.....on the way back, i couldnt feel it at all bar the odd couple of gentle vibrations, which again I took it more from the road....so signs are looking very positive and the trip back was certainly more comfortable than before!
Click to expand...

Well blow me down and call me Cecil.

Wouldn't that be great, IF it definitely is the answer.

Nice easy fix for MG.

Be a first for me though, out of balance brake discs from new, especially as nothing is felt through the brake pedal.

Hmmm🤔

Check this out.......

Screenshot_20240228_195342_YouTube.jpg
 
Id say not warped, more like wildly bad manufacturing, id say they balanced them. Balancing shouldnt be too hard. Warped rotors are felt on the pedal.

Next up where to find those rotors.

Maybe audi 345mm brake discs 57.1 bore.

Mennox said:
UPDATE!

So after waiting what seemed like a lifetime...the dealership replaced the "warped' brake rotors and discs today and they advised the vibration was gone....now the test....

....I can honestly say I think it has resolved the issue!!

I did a 30 mile run on the A19 and on the way to my destination, the vibration still seemed to be there but no where near as strong, but then I took that it could be more the road against the tyres.....on the way back, i couldnt feel it at all bar the odd couple of gentle vibrations, which again I took is more from the road....so signs are looking very positive and the trip back was certainly more comfortable than before!
Click to expand...
Can you find out what they replaced them with ?
 
powerfulx said:
Id say not warped, more like wildly bad manufacturing, id say they balanced them. Balancing shouldnt be too hard. Warped rotors are felt on the pedal.
Click to expand...
I could feel the vibration through the steering wheel and the pedal, which seems to be different to the hum others have reported though. They definitely replaced them with new rotors as my 3 month old rotors had several grooves in them and these are definitely brand new.
 
Hi All, I had the below email from my dealer today...it's still hurry up and wait!......

I’ve chased up with MG technical again yesterday reference a fix for the humming noise.

Still been looked at I’m afraid.

Below is the communication I received

“Chassis Engineering are working on a fix. At this moment in time, there is no eta. This is as much as I know at this current time. “
 
seamust1000 said:
Hi All, I had the below email from my dealer today...it's still hurry up and wait!......

I’ve chased up with MG technical again yesterday reference a fix for the humming noise.

Still been looked at I’m afraid.

Below is the communication I received

“Chassis Engineering are working on a fix. At this moment in time, there is no eta. This is as much as I know at this current time. “
Click to expand...
Mentioning the "Chassis Engineering" department sounds like a clue. As if they are looking to reinforce the way the motor is mounted, or something. Like they are looking to reduce the vibration again rather than find/address the cause.

Hi all, I've started a Google Sheets doc to collate some data that might be useful to diagnose the issue. Let me know if you think some other columns could be added/changed. If you DON'T experience the vibrations (or know someone) please also participate!

I'll share on X-Power threads/groups for now but it would be interesting to get data on other MG4s later.
 
powerfulx said:
Yes i got the same - basically a settle down and hold move. Now we wait
Click to expand...

Agreed.
I've been prodding the dealer and MG over the last couple of months and now being at the 6 month point (for me) will have to start thinking about upping the ante.

Edit : I have never used 'upping the ante' in any spoken sentence or paragraph before.
Ever.🤣
 
Bricktop X PWR said:
Agreed.
I've been prodding the dealer and MG over the last couple of months and now being at the 6 month point (for me) will have to start thinking about upping the ante.

Edit : I have never used 'upping the ante' in any spoken sentence or paragraph before.
Ever.🤣
Click to expand...
This forum is improving your vulcbrilet vulecabriolet velco cabriolet words 🤣
 
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