According to Mazda the CD only activates under light loads and at cruise. I haven’t seen any real numbers or parameters of the system.
In the Autogefhl YT video, Thomas made the remark that he didn’t notice anything that would suggest the CD had activated. There was no loss of performance either.
I would bet that a lot of the Honda VCM problems can be related to poor maintenance by the owner. These systems need regular oil changes with quality synthetic oils as specified by Mazda. So many run their oil way too long then blame the manufacturer when the engine has problems.
Do you know anyone who's bought one and how it's going (uhm)