Caymen - No, I mean the mazda 3 has a defect. Mazda knows about this and if you bring your vehicle in to them they will "patch" the problem. You don't have to break anything, you just have to hit the door in the right spot, do a google search and you will see his is a well known issue. I know all vehicles are easy to get into, but the Mazda 3 is easier than most. The fix is a plate that they stick on the inside of the door skin near the lock.