Video instructions on replacing the cabin air filters on the Mazda Mazdaspeed 3. I believe it may be the same as the regular Mazda 3 and maybe even the Mazdaspeed 6. I recommend doing this after 30k miles or so. Mine had 46k miles and the filters were black.
Mazda, Mazdaspeed, Cabin, Air, Filter, Filters, instruction, Replacement, Video