NHTSA Complaint #11480460 — 2015 HYUNDAI SANTA FE

Was driving like normal all of a sudden engine started loosing power and than started hearing grinding noise. Than engine overheated than RPM died brakes failed and slowly my car stopped in incline I was able to dodge a serious collision by taking safety precaution . Than my car did not start. Turns out engines has been seized due to mechanical failures in my engine. I performed oil change regularly and coolant was perfectly filled. There was no negligence from our end as a driver. My vehicle had 98k miles which was mentioned on Hyundai warranty that it's Powertrain warranty coverage is valid for 100k miles. I was denied my warranty because they mentioned I'm not a primary owner. How does a secondary owner affect this warranty? Secondary owner did not modified the engine to be declined warranty. How did that happen I have serious concern about Hyundai engine.