I assume this is compatible with modded vehicles also?

Should be, I obviously cannot test every modded vehicle out there but I have tested with the ones I have access to (electric trains and hovercar as well as the vanilla vehicles). If you find any modded vehicles which it doesn't work with, let me know.

Will do...thx for the answer

Hey Puppy, great little mod!
Any chance you can make it count Jetpack (from SE) fuel as well? Just make it display however much you have left in inventory of the current fuel you use in your Jetpack would be great!

There is a dedicated Jetpack fuel UI mod here: https://mods.factorio.com/mod/puppy-jetpack-ui

Oh, ok, thanks! :)