In my manual for 3.0tdi 54 reg it says 9l of oil.
8 quarts synthetic oil
The 2009 Audi A8 has a V8 engine.
The 2003 Audi A8 has a V8 engine.
The 2002 Audi A8 has a V8 engine.
The 2001 Audi A8 has a V8 engine.
The 2007 Audi A8 has a V8 engine.
The 2011 Audi A8 has a V8 engine.
The 2005 Audi A8 has a V8 engine.
The 2014 Audi A8 has a V6 engine.
The 2006 Audi A8 has a V8 engine.
The 2004 Audi A8 has a V8 engine.
The 2013 Audi A8 has a V6 engine.