Bests & Worsts Reviews from Amazon

I have purchased an older version of this in the past and had no problems with it, however, this one I can't even use. It plugs into the OBDII plug with no issues, but does not stay engaged to the plug. If you hold the unit while pushing it it will work, but as soon as you let it go it pushes out just enough to disengage and stop working. I tried this on three other vehicles and had the same issue on all of them. I will be looking for a different option. It's a shame because the first one I bought a few years ago worked great and I really like it.