You have to determine whether your car is worthy of fixing. Sometimes it's. Sometimes, it makes sense to save the money you would spend on a used engine replacement part and put it into a new vehicle instead. If you decide to repair it then you won't need to shell out the full cost for a brand new engine. You could save a significant amount of cash by purchasing a used car. This is because used parts for cars are much cheaper than brand new ones. The purchase of a used engine could assist in getting off the road, without paying for repairs to your car.