Melting / sticky dashboard
In hot climates the dash top turns sticky and shiny, creating windshield glare bad enough to hurt visibility; Mazda ran an extended warranty that has lapsed for most owners. It looks cosmetic but the glare is real and the fix is a full dash replacement. Touch the dash top on inspection — sticky means it is already failing.
Ask for repair records covering this item. If it hasn't been addressed and the car is in or near the mileage window, price the $700–$1,500 repair into your offer — or make it the seller's problem.