E20 petrol, containing 20% ethanol, may reduce fuel economy by 2-6%, raising concerns over compatibility and maintenance costs. Petrol blended with 20% ethanol (E20) can reduce fuel economy by 2 to 6%, the government informed the Parliament on Thursday (July 30, 2026), citing a study commissioned by the Centre. The fuel efficiency of vehicles may be reduced by 2 to 6% dependi... [1292 chars]
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