Why does my Miatas battery keep dying if it’s brand new?
I have a 1995 Mazda Miata M edition for a
while it’s been having this issue where the
battery dies immediately I have bought 2 new
battery for it same thing I can jump it and it
will turn on but ones I turn it off it won’t turn
on anymore won’t even crank
It sounds like you have a defective alternator that's failing to properly recharge the battery. The starter takes a lot of voltage to run and the alternator replenishes this power.