Yes , it is an interference engine ( according to the Gates website , they make
timing belts etcetera )
According to the history of the Nissan Quest Vg30e engine from 1993 thru 1998 these group of engines were non-interference engine, so if the belt breaks it will not damage the valves. This feature was demanded by FORD from Nissan before FORD agreed to used this engine in their ViLLAGER and Nissan Quest vans in the time of their joint venture.
It is an interference engine according to the Gates website ( they make timing belts etc. )
According to the Gates website , the 3.3 liter V6 engine in a 2000 Nissan Quest has a timing BELT that is changed at 105,000 miles ( it is also an interference engine )
The 2006 Nissan Quest has a V6 engine.
The 2011 Nissan Quest has a V6 engine.
The 2008 Nissan Quest has a V6 engine.
The 2007 Nissan Quest has a V6 engine.
The 2002 Nissan Quest has a V6 engine.
The 2001 Nissan Quest has a V6 engine.
The 2005 Nissan Quest has a V6 engine.
The 2013 Nissan Quest has a V6 engine.
The 2012 Nissan Quest has a V6 engine.