...I use it on many brands of cars pre and post 95.
By legal mandate OBD-II must be universal, so naturally it will work on many brands of cars.
You replied to another thread where someone paid $50 for a reader which communicates from the OBD-II port to a phone-based interface over WiFi with no cables.
If you own your car long enough I believe you are likely to find yourself with a non-working roof that requires a diagnostic to restore operation. Your $200 reader probably won't be up to the task, since I believe it can not communicate with any non-OBD-II-compliant systems. In that case you want Star Diagnosis.