If you’re using a CarPlay system with your iPhone, you may have noticed that a small number of the built-in apps will automatically display their notifications on your CarPlay screen. While this is a useful feature for some, if you don’t want to see certain types of alerts and notifications in your CarPlay system while driving, the good news is that you can disable them on a per-app basis from the standard iOS Notification Settings.
To do this, go into the Settings app on your iPhone, select Notifications, and then select the specific app for which you want to turn off CarPlay notifications — Calendar, FaceTime, Messages, Phone, or Reminders — and you should see a Show in CarPlay setting below the lock screen setting. Toggle this off, and you’ll no longer be bothered by notifications from that app when your iPhone is plugged into your CarPlay system (although the notifications will still be shown on the lock screen of your iPhone itself). In the case of the Calendar app, you can even customize this based on the type of notification, so you can choose to still be alerted of upcoming events while not getting notifications for shared calendar changes. Unfortunately, if you’re looking to add extra notifications to your CarPlay screen, you’re out of luck for now — as of this writing, only the five built-in apps noted above support displaying notifications via CarPlay.