Dealership denies valid warranty claims to save money. Claims new Optima SX windshields are prone to crack from a small chip in the window. Car is under warranty, windshield cracked while parked in the hot sun (i.e. not from impact). Took down my contact info, never bothered to call back regarding issue. After 2 weeks I had to call them and they said the windows are prone to crack and spread fracture lines. Is this the quality of glass Kia uses? Absolutely ridiculous. Will NEVER recommend this poor excuse of a dealership to anyone.