One problem related to catalytic convertor has been reported for the 2004 Mazda MPV. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mazda MPV based on all problems reported for the 2004 MPV.
2004 Mazda Mpv with only 400 miles on it is starting to develop a sulfur smell coming from tail pipe area. This has been a issue in the past with the Mpv. Is there a fix. I have not contacted dealer as of yet.