One problem related to transmission failure has been reported for the 2003 Mazda MPV. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mazda MPV based on all problems reported for the 2003 MPV.
Transmission failed. This led to the vehicle being undrivable. Transmission replaced at 65,000 miles at a cost of $3500 at hamilton Mazda in NJ. Mazda north american op refused to cover replace/repair. Service mentioned that this was the third transmission failure for Mpv this year. This was the fifth time vehicle had to be repaired due to transmission problems. Transmission computer module failed on Jan 19, 2005.