Currently there are no Hyundais that are compatible with E85. Hyundai specifically states in the owner's manuals that if you use fuel that contains more than 10% ethanol, your warranty will be voided.
The 2001 Hyundai Elantra runs on regular unleaded.
The 2003 Hyundai Elantra runs on regular unleaded.
The 2011 Hyundai Elantra runs on regular unleaded.
The 2005 Hyundai Elantra runs on regular unleaded.
The 2013 Hyundai Elantra runs on regular unleaded.
The 2014 Hyundai Elantra runs on regular unleaded.
The 2008 Hyundai Elantra runs on regular unleaded.
The 2010 Hyundai Elantra runs on regular unleaded.
The 2006 Hyundai Elantra runs on regular unleaded.
The 2012 Hyundai Elantra runs on regular unleaded.
The 2004 Hyundai Elantra runs on regular unleaded.
The 2007 Hyundai Elantra runs on regular unleaded.