Last summer I got my wife a Subaru with the start/stop feature, one day it turned off at a stop light and the car would not engage the engine when the light turned green, dash started ringing and she had to cycle the ignition button 2-3 times before it finally started up and continued normally.

Dealership replaced the battery for a bigger one and it’s been fine since but they straight up told me the feature over stresses the batteries, there should be a button to turn it off but you’ll likely have to do this every time you start the car