I dont have car play option in my iphone 8 so what i do

Have you already connected your phone to your car?

Learn more about setting up CarPlay at https://support.apple.com/en-us/HT205634

Asifadvocate wrote:

I want to use car play option but it is not available in my this iphone 8 so what i do plz

Your car is what needs CarPlay support, not your iPhone 8.

If your car infotainment system supports CarPlay, then your iPhone will provide CarPlay when and while connected.

Without an active connection to an infotainment system with CarPlay, you will find little visible of CarPlay on your iPhone.

If you do not see CarPlay on the infotainment system while connected, check for a firmware update for the infotainment ststem, and check for pairing sequence troubleshooting for your infotainment system.

Your vehicle must be equipped to use CarPlay. I use my iPhone 8 with CarPlay all the time; the vehicle just has to support it.