Did you hear this creak only when cornering?My 15 OB developed a creak in the driver's seat a couple months ago. My experience is that dealers typically dodge fixing noises but I was due for an oil change so I decided to take it there and complain about creak.
They verified the creak and just ordered a new bottom seat assembly. Of course I had to make a new appointment but fix it they did. And put in some other part they thought should be replaced. And updated the HeadUnit.
Of course I have to add a negative. At the first appointment they said I ought to change the cabin filter at my next change. I haven't done that yet but looked at YouTube video on it and it looks slightly easier than my old Camry that took less than 5 minutes. But they wanted $50. I now have an OEM filter for <$20.
But at least kudos to https://www.flemingtonsubaru.com/ for the no fuss or trouble fix.