Overheating new iPhone 17 in new car

I strongly suggest not using that wireless charger however convenient is should be. You will shorten battery longevity. Use cable.

The 17 also has adaptive charging, it may slow it. Also is there a fast charging setting you could turn off?

Do you mean you get the warning on the screen that you should wait, or turn it off, or take it off charge and try later?

If not then it is not overheating, it's just getting rather warm.