One problem related to loud engine noise has been reported for the 2010 Hyundai Elantra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Hyundai Elantra based on all problems reported for the 2010 Elantra.
Loud noise started coming from engine while driving on highway. Taken to Hyundai dealership and diagnostics indicated a bad engine.