MG4 Reduction Gearbox Oil Leak

[AndyL61]

The 9th position is just a checkdigitView attachment 16114

How do you know my car is Sept 22 from the vin ?

 

[Hagen]

How do you know my car is Sept 22 from the vin ?

I don't, you said it ?

 

[AndyL61]

I don't, you said it ?

No I didn't get a build date. Picked the car up 4th Feb. No idea when it was built.

 

[WonkoTheSaneUK]

No I didn't get a build date. Picked the car up 4th Feb. No idea when it was built.

It's on the Certificate of Conformity that MG stuffed in the glovebox.

 

[AndyL61]

It's on the Certificate of Conformity that MG stuffed in the glovebox.

I didn't get one , never had it with the car.

 

[Hagen]

Sorry

No I didn't get a build date. Picked the car up 4th Feb. No idea when it was built.

Sorry AndyL61 ...
The Plant is only 1 digit

 

[agy]

I too
Mine
With N and N
Yes oil leak

 

[jpk]

What's the average turnaround from it having a build date to getting to our shores. If my build date was for example today, does that mean the build starts now or is it that it's been finished being built. Do we know how long it takes them to complete each car?

 

[Hagen]

I too
Mine
With N and N
Yes oil leak

Jumping the conclusions: it seems that Year 2023 is the 'clipping point'. Bizar build in nov. 2022 gets Year 2023.

 

[Macadoodle]

You could fill any of these transmissions with 600ml of oil and it probably wouldn't leak, I'm not sure the absence of a leak proves that anything fundamental has changed in the internal design.

 

[AndyL61]

You could fill any of these transmissions with 600ml of oil and it probably wouldn't leak, I'm not sure the absence of a leak proves that anything fundamental has changed in the internal design.

Yeah I must admit l was wondering how much oil is in mine , but I am not going to worry to much about it. If it fails , yes it will be a huge inconvenience but they will have to fix it. It's their shout.

 

[Hagen]

You could fill any of these transmissions with 600ml of oil and it probably wouldn't leak, I'm not sure the absence of a leak proves that anything fundamental has changed in the internal design.

It makes no sense to me to keep filling those gearboxes, designed for 0,9 l with 0,6 l. Its a short time solution and probably pretty soon those boxes will be damaged with wheels spinning around with 12.000 rpm, with less lubrication, less cooling and raising outdoor temperatures. That will be MG's problem, not the owner.
To minimize those huge warranty costs, it makes sense to me that MG has already changed the gearbox, starting with cars with sequential number X or model year 2023?
My guess is model year 2023. G48MG4 has one, build 13 nov, no leak. Of course to be sure you must drain the oil and see how much was in it. Is there a MG4 owner in this forum with model year 2023, with oil leak?

 

[AndyL61]

It makes no sense to me to keep filling those gearboxes, designed for 0,9 l with 0,6 l. Its a short time solution and probably pretty soon those boxes will be damaged with wheels spinning around with 12.000 rpm, with less lubrication, less cooling and raising outdoor temperatures. That will be MG's problem, not the owner.
To minimize those huge warranty costs, it makes sense to me that MG has already changed the gearbox, starting with cars with sequential number X or model year 2023?
My guess is model year 2023. G48MG4 has one, build 13 nov, no leak. Of course to be sure you must drain the oil and see how much was in it. Is there a MG4 owner in this forum with model year 2023, with oil leak?

That's the million dollar question. Have they actually fixed it properly on later cars or have they just reduced the oil level ? Place your bets .

 

[tsedge]

That's the million dollar question. Have they actually fixed it properly on later cars or have they just reduced the oil level ? Place your bets .

This is why monitoring new owner's leak prevalence and their build dates is useful, and whether any problems show up in future.

 

[JuziWomble]

Ningde - Oct '22 - Took delivery Dec 22 (30th) - (Cant complain - 2 months from build to delivery)

 

[Hagen]

Ningde - Oct '22 - Took delivery Dec 22 (30th) - (Cant complain - 2 months from build to delivery)

Model year 2022?

 

[Deleted member 10041]

That's the million dollar question. Have they actually fixed it properly on later cars or have they just reduced the oil level ? Place your bets .

It would need a couple of new owners, who after a fair bit of spirited driving, still have no oil leaks to be brave enough to drain the boxes and see how much comes out.
Big ask to be fair if you currently have no issues, would be very interesting results though.

On a separate note has anyone with the newest build dates been able to get under and have a look at the gearbox and see what, if any, type of modification they have on the breather.

 

[siteguru]

I've also noticed (from the spreadsheet images) that "leak-free" versions are built in plant N0 whereas leaky ones are built in plant N1. What's the difference between these plants?

 

[Hagen]

I've also noticed (from the spreadsheet images) that "leak-free" versions are built in plant N0 whereas leaky ones are built in plant N1. What's the difference between these plants?

I formed you wrong ?
Digit 11 is the plant 'N'. Digit 12 - 17 is the sequential number. It looks strange to me however, that some of those numbers are starting with 0 and some with 1. ?

 

[tsedge]

Mine was built in N0, no leak yet.