1.8 liter Believe a 1.6L engine may have been available also. Look at the emissions sticker on the right side (of the inside of the hood). It should tell the size as either 1.6 or 1.8L .
The 2001 Toyota Corolla has a 1.8 L base engine size.
The 2006 Toyota Corolla has a 1.8 L base engine size.
The 2005 Toyota Corolla has a 1.8 L base engine size.
The 2009 Toyota Corolla has a 1.8 L base engine size.
The 2003 Toyota Corolla has a 1.8 L base engine size.
The 2013 Toyota Corolla has a 1.8 L base engine size.
The 2007 Toyota Corolla has a 1.8 L base engine size.
The 2010 Toyota Corolla has a 1.8 L base engine size.
The 2008 Toyota Corolla has a 1.8 L base engine size.
The 2014 Toyota Corolla has a 1.8 L base engine size.
The 2002 Toyota Corolla has a 1.8 L base engine size.
The 2012 Toyota Corolla has a 1.8 L base engine size.