Hello all, recently purchased 2025 ES350 a month ago, driven 330 miles thus far. Noticed what appears to be condensation continually slow-dripping from muffler seam. Without having driven or started the car for 5 days, there was still a drip. Lexus service told me this was normal. It is cold here where I live and I have seen condensation dripping from exhaust pipes of cars on the road but 5 days after? Anyone else have this issue? Circled attachments show drip and seam that is damp. Thank you.

Muffler seam that is damp. Drip comes from here.

Drip from muffler.

 

Mine have all done that in the last several years when new and same explanation - "it's normal" - and it does stop in a few months, so I guess they are right.

Enjoy the new car.

Dave Mac.

 

Look up "muffler weep hole".

I can't tell from looking at my own ES 350's mufflers whether or not there's something like a weeping feature obscured by the mufflers' forward bottom seam but that's the vicinity where you'd find such a feature. And, if ES mufflers have such a feature it wouldn't be unusual to see water dripping from there during periods of "water vapor condensing" cold temperatures.

 

Don’t worry. It is normal.

 

Yes ,it is normal for all mufflers to leak condensation at lowest point of muffler.,or not far from drip. However,If you do a lot of city driving the old school fix is to brill A 1/8 in hole at low point just aft of seam.It will help keep exhaust system from rusting from the inside.Usually interstate driving will keep condensation under control.If you do nothing you could see water exiting tail pipe,meaning you could have at least 2 in of standing water in muffler.