Two problems related to engine failure have been reported for the 2012 Hyundai Accent. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Hyundai Accent based on all problems reported for the 2012 Accent.
2012 Hyundai Accent 4dr sedan knocking in the engine compartment, engine light comes on and code is stored, the code is for knock sensor needing to be replaced. . . The true reason for this to put out code for knock sensor fauilare are that the connecting rod bearing is going out and that little bit of play between the rod and crank makes the knock sensor code come up it knocks moving or not this is a serious proublem the engine could have a serious engine failuare and at mid speed it can and will be life treating, fire, parts being thrown threw fire wall hitting occupants in car or outside it started the knocking at 130000 miles I am a mechanic of over 40 years.
The engine just stopped while driving. It was determined that the connecting rod broke and failed on the number one piston. Pieces of metal caused the crankshaft to lock up and pieces pierced the block causing complete engine failure. The connecting rod was cast wrong and it seems after the car has 100k miles it gives out. To me this is a safety hazard.