With improvement of civilization, vehicles have become a part and parcel of everyday life.Geographical locations, unavailability of commodities and essential services, requirement of time management in fast paced urban life has proved the necessity of using fossil fuel driven vehicles. Oneof the adverse effects of using vehicle in a non-scientific and uncontrolled way is air pollution.Uncontrolled utilization of fossil fuel is caused due to incomplete combustion of fuel. Although qualityof fuel and engines is upgrading day by day, but negligence of proper maintenance of vehicles by owners is also increasing. This paper aims at creating a small low cost prototype that not only alarm the user about the over pollution level but also compels to take necessary action before using the vehicle.