1) I had my car overhauled today.
2) I think you should overhaul your essay...there are too many mistakes.
3) Why don't you overhaul your way of teaching?
Is it "to overhaul" possible in these three contexts?
I don't commonly see this word used figuratively. If you were to overhaul something, it would need to be a massive, complete change in the way something works.
We might talk of a nation's tax system or social benefits being overhauled, but not about an essay.
You would rewrite or revise and essay.
Sorry - missed that.
b