if TS can share all the cases

i am doing my part trying to answer to your question:
Source: http://mazda.custhelp.com/app/answers/deta...-in-my-mazda%3F

DO I NEED TO REGULARLY CHANGE THE TRANSMISSION FLUID IN MY MAZDA?
All Mazda vehicles equipped with SKYACTIV® TECHNOLOGY* have lifetime transmission fluid that only needs to be changed when a major transmission component or the entire transmission needs replacement.

lifetime > 5 years.. 5 years under warranty so no issue.. mostly covered.. after 5 year eat dust my friend

Mazda never famous for their reliability. That being said, it's a good entry brand to get you prepared for 'more heavy' conti car ownership.