One problem related to engine shut off without warning has been reported for the 2012 Hyundai Elantra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Hyundai Elantra based on all problems reported for the 2012 Elantra.
Car lurched, engine shut off. Car became uncontrollable and all the warning lights on the dash lit up. Eventually managed to get to side of road where the transmission locked into place. Electrical system was still functional but car was completely unresponsive. Occurred again 800 miles later after "repair" both incidents nearly caused accidents.