Most economical diesel cars - UK List 2021 -Next Green Car

Diesel cars can be very economical – the list below shows the Top 30 diesel cars with the best fuel economy from cars currently available to buy in 2021 in the UK. The data is sorted by MPG and shows details on MPG, CO2 g/km, Tax Band and the unique Next Green Car Rating.

This list of most economical diesel cars can be refined by filtering on various criteria such as Vehicle Class, Price, Tax Band, CO2 band, Congestion Charge and more using the new car search.

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.