As an information service Intensive Driving Courses Bristol are providing this update
NEW CAR TAX RULES - Will I be affected?
Under the new rules only electric and hydrogen cars will be exempt - and all other cars will pay a flat rate of £140.
The amount of carbon dioxide in a car’s exhaust gases is calculated using a standard European test and published in every brochure.
And the results show the average amount of carbon dioxide produced for every kilometre that a car drives.
Carbon dioxide is measured in grams, so the results are written as g/km CO2.
A car emitting 99g/km bought before April 1 will be free of road tax for life.
Those bought after the date will cost £120 in the first year, and £140 a year thereafter.
Cars emitting 131g/km will be taxed £200 instead of £130, those emitting 151g/km will be charged £500 instead of £180, and cars emitting 171g/km will be charged £800 instead of £295, while those emitting 191g/km will be charged £1,200 instead of £490.
The highest possible charge will continue to apply to those emitting over 255g/km, but that will rise from £1,100 to £2,000.
However, those buying high-polluting cars may even break even, with tax set higher in the first year and subsequently falling every year after that.