Where will it all end? According to Stefan Sommer, CEO of transmission maker ZF, nine is the ultimate endgame. How many is too many? When you're talking the number of ratios offered in automatic ...

Even GM’s electronically controlled 4L80E is ... Blueprint’s fuel injection ECU was already using the same J139 protocol as the ZF transmission, making one step of the development process ...

Read the secret behind the ZF 8 speed's efficiency, or see how this transmission works in the video below: Why Does Ford and Chevy Offer a 10-Speed Transmission?