If there is a problem with your car's drive train, you may notice a variety of symptoms. These can include unusual noises or vibrations, difficulty shifting gears, a burning smell, or a loss of power or acceleration. You may also notice that your car is pulling to one side or the other, or that it's harder to turn than usual. If you experience any of these symptoms, it's important to have your car inspected by a qualified mechanic as soon as possible.