I just bought my 2016 Mazda3 back in April and I only really have one issue with it; my software. For some reason, my phone will connect with it via bluetooth and then disconnect out of the blue. It happens about 2 or 3 times before I get it to connect and stay connected. I don't know if this is a software problem too, but my AC doesn't turn on sometimes. It blows cold when it's on, but sometimes it just won't turn on. I'm new to this aspect of mechanics.