My istop never works on my Mazda 3 sp 25gt. The local dealer in Hobart Tasmania, states there is no fault or they cannot find a fault, but the end result is it never works. The local dealer states the vehicle is never used enough, and that is why istop never works. The istop function worked in the first year of ownership, ans since then it never works. I have been in touch with mazda Australia to no avail at this stage. If this is the appropriate destination for this email all well and good, if not how do I email Japan dircetly.