E20 petrol may reduce fuel economy by 3-5% in older vehicles designed for E10, but extensive testing shows no widespread engine damage or breakdown due to ethanol blending.

E20 petrol may cause a slight fuel economy reduction in older vehicles. Extensive testing has not found widespread engine damage linked to ethanol blending. Many older vehicles…

E20 petrol may reduce fuel economy by 3-5% in older vehicles designed for E10, but extensive testing shows no widespread engine damage or breakdown due to ethanol blending.