The 2005 Audi A6 has double overhead cam (DOHC).
The 2010 Audi A6 has double overhead cam (DOHC).
The 2002 Audi A6 has double overhead cam (DOHC).
The 2013 Audi A6 has double overhead cam (DOHC).
The 2009 Audi A6 has double overhead cam (DOHC).
The 2006 Audi A6 has double overhead cam (DOHC).
The 2001 Audi A6 has double overhead cam (DOHC).
The 2012 Audi A6 has double overhead cam (DOHC).
The 2014 Audi A6 has double overhead cam (DOHC).
The 2003 Audi A6 has double overhead cam (DOHC).
The 2007 Audi A6 has double overhead cam (DOHC).
The 2011 Audi A6 has double overhead cam (DOHC).