I’m presuming this isn’t done by the auto manufacturers b/c auto trans seems more of a specialty design. Does the company that designs them also manufacture them and sell the complete unit to the auto manufacturers? Or do they sell the drawings and the auto manufacturers build the units to install in their vehicles?
Is this another of your lets help build the Forum threads ?
GMs Hydramatic division designs and builds automatics. Chrysler and Ford did as well. Borg Warner used to build automatics for a variety of manufacturers… some Japanese. Aisin makes trannys for Toyota and is owned by them.
ZF makes transmissions for a wide range of Euro makes. Ford built 6 speed autos under license from ZF.
I am.sure @davesmopar could add some more.
Transmissions like engines used to be a big part of the brand’s identity.