Easy, they should have better managed expectations from the beginning and when a (self imposed) release / launch date is missed, OWN it, email those who signed up for updates and actually given updates.
they're missing golden opportunities here.
CARB certification in the face of Diesel-Gate is a HUGE deal yet Mazda is completely quiet. Instead of drumming up interest and getting potential customers lined up they're losing them by remaining completely quiet.
Just the fact that their "future vehicle" section url is
https://www.mazdausa.com/vehicles/2017-cx-5-diesel is F'ing embarassing and there truly is no excuse for it. It says to their customers, "we don't give a s***" that we promised this car a year ago, haven't delivered, and we're even too lazy to update the url so instread it'll stand as a giant "F you" to our customers.
now, all of that said, it's tough to find a more die hard mazda fan than I. I know it sounds like I'm being ultra critical (and I am) but it's because I've continiously owned Mazda's for the last 20 years, know people at Mazda, and even work with them annually to put on an enormous car event.
Mazda is better than this and that's what is so disappointing.