NHTSA Complaint #11506142 — 2016 KIA SORENTO

We were driving home from a road trip in November 2022 - and the heater was failing, not working. There were no warning lights showing. There was a rattling-type sound when we got nearer to home and since there were still no warning lights coming on, we got the car home. Checked the coolant and oil levels - topped them off (not too low). The next morning, I was going to drive to work - started the car and it sounded rough. Took daughter's car to work. My husband took the car to shop near the house - they said they got air pocket out of coolant line and suspected head gasket was blown. Took it to KIA dealer and they confirmed head was blown and would need a new engine - $12,000. Never had any indication of overheating until just before we took it to the dealer - the temp gauge indicator would be in the middle then would rise to high and go right back down to middle. Did that a couple of times on ride to the dealer. It's now sitting in my garage while I figure out what to do with it.