Found out today I too had a catastrophic failure in my transmission that will require a $5.5k repair. My 2016, 69k miles HRV stalled on an interstate in the middle of no where AZ (very dangerous situation) and I had to have it tow to the Honda dealer in Phoenix. Was told the next day the issue was with the ignition button (another common problem), paid $400 for the button even though I had a hunch it was transmission related given how it failed, the dealer insisted the symptoms weren't transmission related.
Low and behold after picking up my car, I did a "test drive" on another interstate highway nearby and it stalled AGAIN on the highway--RPM shoots up to 5000+, loss of forward momentum, engine vibrated and most of the dashlights came on (power steering, break system, traction assist, tire pressure, parking break..you name it). No engine power but AC/lights etc. stayed on. Had to have the car towed back to the dealership. This time I didn't shut it off and had them diagnose while it's still on--they eventually said a whole bunch of transmission codes appeared.
I have my car serviced by a Honda dealer for every single maintenance minder ever since I got it brand new in 2016. Transmission fluid consistently changed with the last service & multi-point inspection 2 weeks ago.
I feel like my life was put in danger twice because of Honda--looking forward to getting rid of this and never purchasing one again.