Many developed countries have Shaken (vehicle inspection) system but there are many different ways of doing it. For example, in Germany, you should have your car inspected every two years (first inspection is not due to until, three years after purchase), in England, every year (the first inspection, three years), in France, every other year (the first inspection, four years), in Sweden, every year (the first inspection, three years) and so on. This is our duty to drive a well maintained car and not to pollute the environment.