MG4 Undertray dip/bulge

[Rolfe]

There is some evidence that they have a redesigned tray. I suspect they're using up the dud ones in the hope people won't notice.

 

[cyberster]

Details to follow.

 

[PristDean]

I fixed mine with two self drilling tech screws. Sticks to ground like McMurtry now.

Nice, would you be able to show a picture please ? I'm assuming fixing it up was safe enough considering the battery etc ?

 

[Rolfe]

If my dealer hasn't managed to do a good job on mine, I'm quite tempted to take it to my local garage and ask him to have a go. These guys are good. I presume a lift designed to take an ICE car will be able to lift an MG4? Or are EVs too heavy?

If I do it, I'd like to have some idea what works.

 

[Emgie 4]

Nice, would you be able to show a picture please ? I'm assuming fixing it up was safe enough considering the battery etc ?

Sounds good, but we all know what they say about assuming! I'd also expect there is likely enough gap between the undertray and anything critical like battery or wiring, tho careful examination before drilling in additional texscrews (or similar) could save a whole heap of heartache after - I think it safe to assume what MG will say about warranty if they find a hole drilled into battery pack!

 

[Alb]

If my dealer hasn't managed to do a good job on mine, I'm quite tempted to take it to my local garage and ask him to have a go. These guys are good. I presume a lift designed to take an ICE car will be able to lift an MG4? Or are EVs too heavy?

If I do it, I'd like to have some idea what works.

A standard garage lift will have no problem with our EVs. As you imagine, I'm sure this is a very solvable problem.

 

[mg4mc]

I took my tray off to take a look. The casting that some people have said looks like it is below the edge of the tray is indeed lower than the underbody forwards of it. The rear under tray has a lip on the front edge that reaches up beyond the casting.

Because of the casting there is nowhere to add an additional screw in the middle.

The tray has some padding between the casting and the plastic. I guess it is a heat sink and gets warm and the padding is an effort to limit the effects of the heat somewhat; not good for an area of unsupported plastic.

On mine I could not remove the sag by taking up slack in mount points either side.

Next attempt will be to see if I can make a metal strap to go between the existing bolts.

 

[Rolfe]

A standard garage lift will have no problem with our EVs. As you imagine, I'm sure this is a very solvable problem.

I remember taking my Golf in with a puncture and watching in some awe as the lift simply hoisted the car into the air so that the wheels were at eye level for the mechanic.

 

[Rolfe]

I took my tray off to take a look. The casting that some people have said looks like it is below the edge of the tray is indeed lower than the underbody forwards of it. The rear under tray has a lip on the front edge that reaches up beyond the casting.

Because of the casting there is nowhere to add an additional screw in the middle.

The tray has some padding between the casting and the plastic. I guess it is a heat sink and gets warm and the padding is an effort to limit the effects of the heat somewhat; not good for an area of unsupported plastic.

On mine I could not remove the sag by taking up slack in mount points either side.

Next attempt will be to see if I can make a metal strap to go between the existing bolts.

Please keep us posted about this, especially if you make progress with a reliable fix.

 

[GlasWolf]

A standard garage lift will have no problem with our EVs. As you imagine, I'm sure this is a very solvable problem.

Slightly off topic, but Philippa Forrester did a video about EV servicing and it shows some of the equipment used in a specialist EV maintenance bay, including the modified ramp.

 

[Kithmo]

Next attempt will be to see if I can make a metal strap to go between the existing bolts.

Will you leave a small square gap in the middle like the later modified ones ?

 

[PristDean]

I took my car into MG Bayliss Gloucester, they were were very good and have admitted the tray is warped from the intended shape, so they have ordered me a new one. I am hoping it is the new design, but will see.

 

[Rolfe]

Slightly off topic, but Philippa Forrester did a video about EV servicing and it shows some of the equipment used in a specialist EV maintenance bay, including the modified ramp.

Ah, so it's not about the weight, or even about not damaging components under the car, but about being able to access the battery and even remove it.

So presumably an ordinary lift would be able to deal with an EV that simply needed a wheel change or something like that? And I would imagine would give adequate access to the rear undertray too.

 

[Rolfe]

I took my car into MG Bayliss Gloucester, they were were very good and have admitted the tray is warped from the intended shape, so they have ordered me a new one. I am hoping it is the new design, but will see.

I am positively holding my breath here.

 

[SimonS]

Just had a squint underneath mine. Phase 2 SE LR.

 

[Rolfe]

That's worse than mine. You have to complain.

 

[PristDean]

Just had a squint underneath mine. Phase 2 SE LR.

View attachment 19463

So disappointing....and I thought MG / SAIC might have learnt a lesson by now... apparently not.
Try your dealer, they should replace it for you, my dealer is doing just that for me

 

[Rolfe]

It was finally dry enough for me to get under mine. I thought at first that it was a bit better, but the photo isn't all that reassuring.

 

[Diggsy]

Just had a squint underneath mine. Phase 2 SE LR.

View attachment 19463

That looks like it has a double bulge

 

[Eber]

That looks like it has a double bulge

Phase 2 - 2 bulges.