As of yet, nothing.
Fun little car, a bit scary in turns though. Frugal on gas for this type of vehicle. A/C is very cold which I'm very grateful for. Only down side to this car is that people tend to like to break into them. Mine has been broken into several times, there just isn't any security with the vehicle unless you buy a hard top which is very expensive.
I have to agree with you on the theft part. My car has been broken into and my radio stolen.. It sucks!! but it is a fun car..
I love my Tracker 4 door hard top no problems. Well one problem - left front hub-lock got stuck, had to replace it, but cheap price $ 179 Canadian for two. Oh and really easy to replace, plus I get 800 kms to a tank.