If you’re looking for a brand-new car, you’ll pay a rate depending on the vehicle’s CO2 emissions. This ranges from £0 for cars with zero emissions, all the way up to £2,070 for cars that emit over 255g/km, which is a lot of money.
However, if you’re looking to buy a used car, or a car that was registered between 1 March 2001 and 31 March 2017, the tax is calculated solely on vehicle emissions. Petrol and diesel cars pay anything from £0 for up 100g/km, to £555 for over 255g/km, whereas alternatively-fuelled cars pay between £0 and £545. You can find specific rates for your car here.
It’s all a bit complicated, but if money is really important to you, and you’re looking for a car that’s cheap to tax, you could try one of these options.