Do all vehicles now have internal water pumps and if not what vehicles still have external water pumps?
Do all vehicles now have internal water pumps
No.
what vehicles still have external water pumps?
As far as I know there is no comprehensive list of those vehicles. If you go to an online parts supplier like rockauto.com you can usually tell by the picture of the pump, it will have a serpentine belt pulley or mount for the pulley, and possibly hose connections if it is external. For example, here is the water pump for a 2023 Subaru 2.5 H4 which is external, you can see where the pulley mounts to it:
what vehicles still have external water pumps?
most of them
I can count far more vehicles that have external water pumps than internal water pumps.
.
Now if you are asking about which have electric water pumps versus purely mechanical water pumps, then that’s something I would have to look up (far from trivial). Electric water pumps are not good for durability.
