Both my cars have that misfeature, but vary in details. Both take just long enough to start playing that they usually start blaring music as I'm backup up. Nor

Both my cars have that misfeature, but vary in details. Both take just long enough to start playing that they usually start blaring music as I'm backup up. Nor have I found any way to disable the feature on either. It took months for me to get into the habit of sitting and waiting for it to boot so I could turn it off before I start driving. The Honda CR-V is like you say, it will only turn on if you had the radio on when the car was shut off (makes sense), but turns on long before it is capable of responding to the off button. The Chevy Bolt infuriatingly turns on (almost) every time you get in the car regardless of whether the radio was on or not when you last used it. For the life of me I cannot figure out what heuristics cause it to (very rarely) not turn on. At least its off button is functional at the time it starts playing.