It's been going on for a while, and has gotten louder as time goes on.
I have 164,000 miles on my Sonata and loud knocking noise when I hit the gas. on 2006 Hyundai Sonata
Has it ever been to a shop for assessment since the noise started? Might be time , before it's beyond repair.
And it may be too late already!
WHY , THAT'S JUST DOWN RIGHT POSITIVELY NEGATIVE! ..............BUT SADLY PROBABLY TRUE.