Lower emissions: Electric vehicles produce significantly lower carbon emissions and less air pollution than conventional petrol or diesel cars. A fully electric car produces no harmful ‘tailpipe’ emissions at all. Cheaper running costs: Electric cars currently pay no car tax and no fuel duty (for fully electric cars). Switching to an electric car could save you up to £750 a year in fuel bills. Quieter: A vehicle in electric mode produces no engine noise, producing a nicer environment for the driver and those that you drive past.