Check for fuel delivery (bad fuel pump?) Check for spark (bad coil?) Plugged fuel filter?
The 2005 Hyundai Sonata runs on regular unleaded.
The 2009 Hyundai Sonata runs on regular unleaded.
The 2007 Hyundai Sonata runs on regular unleaded.
The 2003 Hyundai Sonata runs on regular unleaded.
The 2004 Hyundai Sonata runs on regular unleaded.
The 2001 Hyundai Sonata runs on regular unleaded.
The 2010 Hyundai Sonata runs on regular unleaded.
The 2006 Hyundai Sonata runs on regular unleaded.
The 2014 Hyundai Sonata runs on regular unleaded.
The 2013 Hyundai Sonata runs on regular unleaded.
The 2008 Hyundai Sonata runs on regular unleaded.
The 2012 Hyundai Sonata runs on regular unleaded.