Watch won’t notify me when receiving call while on car bluetooth

Watch won’t notify me when receiving call while on car bluetooth…

I just got my Apple Watch series 9. My issue is that if I am in my car Kia seltos and receive a call on my iPhone 15pro (both up to date) my stereo in car rings but my watch doesn’t alert me that I’m getting a call. other notifications I am getting on watch only calls alerts not received…

Is this the way it has been made ..