Lift the door panel up and off the door frame.
How to remove mazda 3 rear door panel.
Starting at the bottom of the door panel gently but firmly pull the door trim from the bottom and pop it out of its clips working up.
Continue pulling out the pop rivets all along the bottom edge and sides of the door panel.
From here it is pretty simple.
Move the seat all the way back and tip the seat way back.
Tilt panel away from frame.
You will be breaking 2 plastic clips from the rear part but once you do it just pulls out.
You may need to insert a flathead screwdriver or trim panel removal tool in between the door panel and metal frame to pry out the friction fasteners.
I just demonstrated on how to remove the door panel on my 2014 mazda 3 sport.
Lift the door panel up as you remove it and then unclip the wiring from behind.
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