ok where is the knocking coming from, brakes, engine ? only happens during acceleration ? if it is truly an engine knock, check oil immediately, but maybe to late, again need more info.
The 2007 Kia Sportage runs on regular unleaded.
The 2005 Kia Sportage runs on regular unleaded.
The 2010 Kia Sportage runs on regular unleaded.
The 2001 Kia Sportage runs on regular unleaded.
The 2002 Kia Sportage runs on regular unleaded.
The 2006 Kia Sportage runs on regular unleaded.
The 2014 Kia Sportage runs on regular unleaded.
The 2012 Kia Sportage runs on regular unleaded.
The 2011 Kia Sportage runs on regular unleaded.
The 2008 Kia Sportage runs on regular unleaded.
The 2013 Kia Sportage runs on regular unleaded.
The 2009 Kia Sportage runs on regular unleaded.