I live in a bad neighborhood in the worse part of town. I've had my home broken into. A riding lawnmower stolen. A BBQ grill stolen and my wife had a bad habit of leaving her car doors unlocked so things went missing out of her car. And last I have and old pickup truck I drive once every cpl of months that was broken into for a cheap JVC radio. Naturally when I bought my Miata first thing I purchased was an alarm. It also allowed me to add auto door locks to my car so it was an added bonus. But so far I've had my Miata over a year and a half no problems yet but I did install alarm in middle of day where everyone could see and hear what I was doing and I hit the panic button a few times when I see people walking around the neighbourhood just to let them know. Its alarmed and it works.