Chassis codes used to find information, and describe your car to other enthusiasts.
J1 - 1992-1995
RD - 1996-2000 (sometimes referred to as J2)
XD - 2001-2003
XD2 - 2004-2006
HD - 2007-2010
UD/MD - 2011-? (UD = US Spec, MD = Korean Spec), some UDs are made in Korea
Elantra Touring
FD - 2010-?
Information mainly pulled from hmaservice.com