If it's cheap why not? ... Porsche V8!
I just bought a really cheap W140 400SE and the more I drive it the better it performs. I'm pretty sure it had sat on and off for years and now that it's been fully serviced & being driven regularly things are starting to work as they should. (After the oil & filter changes the trans shifts butter smooth and the engine runs like a top. Even the power steering is smooth now. AND I've just fixed all of the electrical issues.)
But if it has one major issue I could part it out and double the money I paid for it.
Just think. I could have bought a second hand Honda SUV for double the money and joined the ranks of the boring majority.