condensation

I just purchased a 2018 Buick Regal Sportsback Essence. i have had it for about 1 month and just noticed condensation in rear seats where the seatbelt clicks in on both sides. I have no idea what it is it hasn't rained or snowed in weeks. my seats are starting to smell of mildew any thoughts??

I recently purchased a 2019 Buick Encore. I live in Florida and in the early morning and into the night I have a condensation problem on the outside of the window. The AC blows through the defrost constantly. The defrost feature does not seal off like every vehicle I have ever had. The Service...