Car engine sounds like its knockin and engine stalled out

Hello, this sounds like a significant issue. Seek guidance from your local dealership - have the vehicle towed in with roadside assistance, as it would seem realistic that you are under 36,000 miles still. If not, you still have powertrain warranty to 60,000 miles - even if you tow it in yourself. No other advice to offer; a dealership and hopefully factory warranty should assist.