Auto repair isn't cheap, so here are some common problems that go wrong with all makes and models of cars and some things that you can do about them. Auto repair can become quite expensive, so you might consider troubleshooting your car's problem yourself. That way, when you take it to the shop, you'll already know what's wrong with it. That'll help them fix it faster and more cheaply. There are quite a few common problems that you can even fix yourself. If the car doesn't start, there are a few things that could be wrong. First, if you turn the key in the ignition and nothing happens, check your gas level. It's really embarrassing to call the car folks in a panic because you're just sitting on empty. Fill your tank and the problem is solved. If there's gas in the tank but it still refuses to start, the problem is probably the battery. A simple way to check whether your batter is charged or not is to check whether your windshield wipers and air condi...