The 2005 Volvo S80 has a 2.5 L base engine size.
The 2008 Volvo S80 has an inline 6 engine.
The 2004 Volvo S80 has an inline 5 engine.
The 2003 Volvo S80 has an inline 6 engine.
The 2006 Volvo S80 has an inline 5 engine.
The 2007 Volvo S80 has an inline 6 engine.
The 2010 Volvo S80 has an inline 6 engine.
The 2011 Volvo S80 has an inline 6 engine.
The 2001 Volvo S80 has an inline 6 engine.
The 2012 Volvo S80 has an inline 6 engine.
The 2009 Volvo S80 has an inline 6 engine.
The 2014 Volvo S80 has an inline 6 engine.