One problem related to engine squeaking noise has been reported for the 2011 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Hyundai Sonata based on all problems reported for the 2011 Sonata.
Engine failure due to metal debris that may not have been removed during manufacturing. Loud and irregular knocking and squeaking noises from the lower portion of the engine. While driving on the highway 126 in columbia SC my car started with this loud noise I was in the middle lane had to move over quickly to the right lane where I had to immediately pull over off the road because my car cut off. Very dangerous to be in motion on a highway and have your car out of no where make a loud noise before your car completely turning off. According to the inspector the NHTSA issued recall 15v568000 my vehicle manufactured on 8/27/10 was one of the units that should be included. However Hyundai has no record of a recall for my model year 2011, please tell me why my car is not on a list with a recall? I do have a copy of documentation.