Hi. if you have an alarm on the jazz it will be indicated by a sticker on the side windows . i dont know about uk or other country models but my South African model does have an alarm and immo . i tested it by having the bonnet (engine hood) open and keeping the micro switch on the bonnet latch closed , then i activated the alarm . you have to wait about 15 or 30 seconds for the alarm to activate , i then released the switch and the horn started to beep. the downside of the alarm system is that it does not have a ultrasonic or movement sensor. I tested it to see if it picks up any movement, it doesn't . with the absence of a ultrasonic sensor , you can leave your dog in the car while you have the alarm armed. if you press the arm button twice , it double locks your car which prevents a thief from breaking a window and using the unlock button to unlock the car. The downside is that a thief can break into the honda jazz and enter through a window without setting off the alarm system.