Transmission Control Module (TCM) faults are not unknown on these early Mazda 3s. Symptoms usually involve erratic shifting, a failure to select gear at all and having the car go into limp-home mode.
The MX-5 Miata doesn’t make sense with the six-speed automatic transmission, but as you’d expect, some people fail to understand the purpose of a sports car. Over in Australia, the SkyActiv-Drive is ...