If you’re thinking about buying a used car, it’s important to factor in the cost of wear and tear. This includes things like oil changes, new tires, and repairs. You can calculate the cost of wear and tear using a few simple steps. First, figure out how many miles your car has been driven. Next, multiply that number by the cost of a gallon of oil (which has been rising steadily over the past few years). Finally, add in any other necessary repairs or replacements. This will give you an estimate of how much money you’ll need to spend on car maintenance over the course of its lifetime. ..