Best Superminis for Fuel Economy and Low Emissions

The Green Car Guide to the most economical and lowest emission superminis on sale in the UK today. We list and compare the best supermini vehicles in diesel, petrol and electric categories, with full spec reviews and fuel economy data. A supermini is defined as something larger than a classical Mini yet but smaller than a small family car and are most commonly available in hatchback form. The ‘Supermini’ as a formal car classification term was ratified in the 1980s and was eventually adopted as the B-segment of European Commission car classification in the late 1990s.