I'm not sure exactly what the rule says. I've heard stories of people buying a modern SUV, and needing to push a button on every trip, to disable the start/sto

I'm not sure exactly what the rule says. I've heard stories of people buying a modern SUV, and needing to push a button on every trip, to disable the start/stop feature. I've also heard of people making a little motorized arm that pushes the button automatically. Edit: It's not strictly mandatory. See page 3 of https://www.govinfo.gov/content/pkg/CFR-2014-title40-vol19/pdf/CFR-2014-title40-vol19-sec86-1869-12.pdf https://www.govinfo.gov/content/pkg/CFR-2014-title40-vol19/p...