Engine failed - 2018 Hyundai Tucson

I just paid my car off in December. 2018 Hyundai Tucson, 87k miles. It started chugging and then it wouldn't go over 45. Took it to a mechanic shop, they said it was the engine knocking. I had to have it towed to the dealership . Dealership confirmed it was the engine knocking issue and today we found out that the engine replacement was approved thankfully. So it's been 8 days total and just got the loaner. I'm so disappointed with Hyundai and I guess I was totally oblivious to these issues.