I have bought and sold over 300 vehicles in my lifetime. One of my rules is I never, ever sell a vehicle to a friend who isn't mechanically inclined. To do so is to either become their on-call mechanic for every little thing that goes wrong, or to risk the friendship when something mechanically catastrophic happens to the vehicle that you could have no way of knowing would happen. A mechanically inclined friend, or better yet, a friend with the same kind of love for turning wrenches and bustin' knuckles, will almost expect stuff to happen, and therefor won't be surprised when it does. Jeep or Yugo, it doesn't matter. It's a used vehicle. Things will happen.