The Most Economical Cars on Sale in 2021 in the UK for 10 Different Categories

Looking for the most economical car on sale right now? If you want to save money on running your next car, then you must read our Green Car Guide – which guides you to the most economical and lowest emission cars in ten different categories. All of the cars in our Guide are available to buy in 2021 and represent the most efficient cars in their class, and the latest 2021 Vehicle Excise Duty (VED) rates and 2021 Benefit in Kind (BIK) company car tax rates are included.

Each Green Car Guide category is broken down into the best electric cars – which are ideal due to their zero tailpipe emissions; plug-in hybridshybrids; petrol and diesel cars.

We have provided expert and independent advice about cars that are efficient and great to drive for over 13 years, and Green Car Guide has reviewed all of the cars in our Guide.

Our Green Car Guide is updated every month so check back soon for the latest green and fuel efficient vehicles added to the list!

Which car is best for you? – petrol, diesel, hybrid, plug-in hybrid or electric – check out our video ‘Which car is most suitable for you?