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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.

Diesel Superminis

First place

l-supermini-diesel-renault-clio-80x53.jpg Renault Clio Play dCi 90 ECO 88.3 mpg

The Renault Clio returns 88.3mpg, equalling the Hyundai i20 and the Kia Rio, but it emits just 83g/km, which is 1g/km less than the Hyundai i20, and 2g/km less than the Kia Rio.

Hyundai i20Hyundai i20 1.1 CRDi 75PS S Blue 88.3 mpg

The Hyundai i20 shares the same underpinnings with the Kia Rio, meaning it’s very efficient, however the Rio beats it for performance and value.

l-supermini-diesel-ford-fiesta-80x53.jpg Ford Fiesta Zetec ECOnetic 1.6 TDCi 3 door  88.3 mpg

The ECOnetic Fiesta uses an unfashionably large but highly efficient 1.6-litre turbodiesel engine which gives it good performance compared to super low CO2 rivals.

Vauxhall CorsaVauxhall Corsa Design 1.3 CDTi 16v (95 ps) eco FLEX Start/Stop 3 door  88.3 mpg

The Vauxhall Corsa is a regular best seller in the sales charts, offering low emissions, high economy, and low running costs.

Petrol Superminis

First place

Yaris uses a 1.5-litre petrol engine which is 10% smaller than the 1.8 used in the Prius and Auris Toyota Yaris Hybrid Icon 1.5 VVT-I  85.6 mpg

The hybrid Yaris is a miracle of modern engineering, offering very high official fuel economy.  Unfortunately ‘fun’ and ‘Yaris Hybrid’ won’t appear together in print too often.

Second place

Alfa Romeo Mito Alfa Romeo MiTo  67.3 mpg

The Alfa Romeo MiTo is now available with Fiat’s TwinAir petrol engine which gives it high mpg and low emissions to go with the MiTo’s good looks and fun driving experience.

Electric Superminis

First place

l-superminis-electric-renault-zoe-80x53.jpg Renault ZOE

The Renault ZOE is a fully-electric supermini that is excellent to drive, cheap to run, and relatively affordable to buy. The option of a new 41kWh battery increases the official range to 250 miles further expanding its appeal.