Most economical cars UK - List of high fuel economy cars 2021

With rising fuel costs, finding an economical car with good fuel economy is essential. The listing below shows the Top 30 new cars currently available in the UK in 2021 sorted by MPG and with details on MPG, CO2 g/km, Tax Band and the unique Next Green Car Rating.

Please use the new car search to filter these results by Manufacturer, Vehicle Class, Fuel Type, Tax Band, Transmission and more.

If you are looking for something more specific try one of the lists of economical cars below:

What constitutes an economical car will vary from person to person, but most motorists are looking for low running costs: low tax, low insurance and good fuel economy

High fuel economy or MPG tends to go hand in hand with low CO2 emissions and low CO2 emissions in turn means less car tax or company car tax. Thus, the most economical cars to run are often also environmentally-friendly cars.

Selecting a model in the list of most economical cars above will show more details on the model, including running costs, whole life cost and links to fuel and tax calculators.