One problem related to vehicle shudder has been reported for the 2006 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mazda MAZDA3 based on all problems reported for the 2006 MAZDA3.
As I was driving on the freeway in bumper-to-bumper traffic, traffic came to a standstill. I went to accelerate as the cars moved and then I realized my engine had shut off. The check engine light had come on and my car was dead. I put it in park, turned the key again and it started up again. But I noticed as I was crawling along, my car had a rough idle. The whole car would shake and rpm seemed a little lower than usual at idle. I found out my motor mount had gone. Dealer replaced it, had an extended warranty so it was covered. Gave out pretty quick if you ask me - at around 55,000 miles.