Barely over a thousand miles and I've noticed as of late the car seems bouncy, jumpy over semi rough roads. I have the 21" wheels not the 22" like I had in my 2022 GLE 63 Coupe. I dropped the tire pressure three pounds front and rear that didn't do anything. It does it at speeds around 30-40 mph if the road is lightly wash-boardy (made up word) if that makes sense. Putting it in sport plus seemed to help a tad I believe. Supposedly the Coupe rides better than the SUV. I heard that somewhere a while back.

I never noticed this in my Coupe. It almost feels like something might be loose like a mount. But I can't get it to do that while braking forward or in reverse. It makes no clunks going over dips or irregular surfaces at lower speeds. It just doesn't feel right. Is this the way it is or am I imagining all this? I’m going to have the dealer check it out but wanted to post here in case others had any thoughts. Seems particularly odd since I have the 21" wheels which are supposed to ride better.

I hadn't heard that theory that a coupe rides better than the SUV. You'd think the opposite, based on the heavier weight of the SUV.

Question: Are you using the tire pressures from the gas flap (which would be the correct pressure, at least as a starting point), or are you using the driver's door post pressures (which would be incorrect)?
Second question: Are you on run flats now?

Yes, I use the pressures on the gas door. I have the Continental Cross Contact LX sport tires that came with the car. I have a lot of things in the back and removed everything even the styrofoam with the factory tools/spare. All gone. No difference. I guess the best way to describe it now after driving it some more is on a lightly rippled surface. It feels bouncy and a little clunky like it clomps over the ripples and man hole cover dips.

Runflat tires? It may work better with non runflat.

I like

We have the same 21" tires. Mine's an SUV.
I have mine inflated to gas flap +1 or +2.
I don't have that sensation.
No ideas.

I had the shop foreman who I've known for ten years go out on a drive with me. I drove and he looked over and noticed I had a "check engine" light on. Didn't see that on the way over to the dealer. He said the CEL was a miscommunication error between the key and ignition module and needed a software update. That was a head scratcher for me. Car was built in Feb. 2026 and it's the sixth year of production for the GLE. Why would a one month old car throw a CEL and need a software update for an ignition module? Just strange to me.


Back to the clunking noise. He heard the sounds I was talking about on the drive we did. It's definitely on the right side. To me it sounds like the rear but he thinks it's coming from the front and said it could be where we're sitting but it's on the right side. Should have some news tomorrow so I will update. So I left the car there and got a loaner. Not too thrilled about this right now. My 2022 GLE 63 had several issues and my 2023 C63 was a lemon buyback and now this. Really no excuse or it's just bad luck on my part. If something happens again sooner rather than later I'm saying good bye to the car.

@benzbell I hope they'll use Chassis Ears to pinpoint the sound.