Vehicle needs to be empty, don't want burn/destroy occupied or active vehicles from outside by some small matches...
You can set "Ignore Faction" check if want burn friendly vehicles too.
The "Cannot perform" reason texts editable if need translate for other languages.
Override and edit the mod's Vehicle_Base.et for text changes or when use Ignore Faction checkbox! This way change settings on all vehicles, not need edit all Entity's ActionManager one by one.
You can enable/disable script on vehicle by "Protect this vehicle" checkbox.

Edit:
Added Blacklist config for protected vehicles.
Just override Blacklist config to your mod and edit.

SetOnFire

Adds "Set on Fire" action to vehicles fuel tank cap.

SetOnFire

1.0.4

1.0.3

1.0.2

1.0.1

1.0.0