The 2004 Mazda MAZDA3 has 16 valves.
The 2006 Mazda MAZDA5 has 16 valves.
The 2005 Mazda MAZDA3 has 16 valves.
The 2010 Mazda MAZDA5 has 16 valves.
The 2004 Mazda MAZDA6 has 16 valves.
The 2010 Mazda MAZDA6 has 16 valves.
The 2015 Mazda MAZDA6 has 16 valves.
The 2011 Mazda Mazdaspeed3 has 16 valves.
The 2012 Mazda MAZDA3 has 16 valves.
The 2009 Mazda MAZDA5 has 16 valves.
The 2013 Mazda MAZDA2 has 16 valves.
The 2008 Mazda MAZDA6 has 16 valves.