I am not 100% sure of your model year, sorry..
In my case i have 2013 Mazda 3 (pre-skyactiv) that calls for M-V (Not Mercon V) i am not sure if your trans requires the same, i believe another person just gave a another spec but i share my experience just in case.
I started doing my 1st drain & fill recently using Valvoline Maxlife ATF which is compatible with M-V and so far so good.
Once you have the spec you need confirmed i would suggest checking if Maxlife is compatible and use it (Also Mobil 1 or Castrol Import ATF).
Of course the OEM fluid is always an option but it tends to be overpriced.
Last edited by knoas; 10/03/17 11:19 AM.