Engine RPM's fluctuating during idling, @dealer now getting compression test.
 

I'm wondering what the problem could be.
i'm getting compression testing right now at the Mazda dealer.

could be bad plugs, bad cat, bad coils, harness, tb and/or Engine.

let us know what happen :)

Or the clutch pedal switch...can cause a hunting idle.....

Neutral switch if it happens only in neutral
Clutch switch if it happens only with the clutch depressed

If it's neither of these then what nycgps said

It's an automatic, and it does it in neutral too. just had a compression test done, posted results.