It is absolutely not a liability issue. Sale of a used car by someone who isn’t a dealer is as-is where-is at least in my state and I assume most others. They can even do like some districts do with their busses; they pull the batteries and say it can’t leave the property under its own power. So you get a tow truck to tow it 100ft down the road, chuck a battery in it and drive it away, then at that point you’ve “restored it” and anything wrong is something you missed.