Re: "Wireless Car Play not working on iOS27 (or 26) with BMW iDrive7" ... "The phone says it’s connected and paired but will not show on screen."
If you haven't already:
Try checking for a firmware update for the vehicle's stereo / infotainment system, (The vehicle's manual or the manufacturer's support website likely has firmware update info.) The firmware may need to remain compatible with your up-to-date iPhone.
Again: If you haven't seen it already:
If CarPlay isn't working as you would expect it to, Apple Support's troulbe-shooting article (link below) may help:
Find out what to do: If you need help with CarPlay - Apple Support
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Re: "Please fix this urgently Apple. Whatever you did on iOS26 has really messed around with CarPlay which many people have come to rely on now."
We are all Apple users, just as you are, in the community. Some of us do what we can to assist each other. Apple is unlikely to see your post to us here.
It seems clear that not everyone has issues after updating to iOS27. With many different makes & models of vehicles in use, one solution does not fit all, when a new iOS version is released ... a firmware update, a setting change, turning off a VPN so it doesn't interfere ... these and other solutions have all worked in individual cases.
Various people have solved their particular CarPlay issue in various ways, (without Apple providing a particular "fix"), while others do still struggle.
Eg: Discussion thread:
iOS 27 CarPlay not working after update o… - Apple Community
Apple provides a feedback website, welcomes feedback, and carefully reads and logs feedback.
The more info. Apple receives on which vehicles, iPhone models, and iOS versions, are affected, the more likely the issue will be addressed in an update, if it is an issue Apple is responsible for.
You might consider providing info. on your CarPlay experience:
Apple's Feedback Website: Product Feedback - Apple