I am under the impression that Aisin (Toyota?) and BorgWarner (GM?) make more reliable automatic transmission than their competitors (i.e. Honda, ZF, Chrysler). This seems to be at least the common perception in the last couple decades.
I would imagine patents that old are expired and they should be able to all make reliable transmission for a long time by now.
I would imagine patents that old are expired and they should be able to all make reliable transmission for a long time by now.