<h1>Automotive and petroleum industry defends E20 rollout, says 2-4% fuel efficiency loss acceptable for national benefits</h1> Automotive and petroleum industry representatives and a testing agency reported that 20% ethanol-blended petrol (E20) may reduce vehicle fuel efficiency by about 2-4%, asserting national economic, environmental and farmer benefits outweigh individual fuel-cost increases. Industry bodies disputed claims of large efficiency losses and said warranty and insurance claims tied to E20 use are unfounded and will be honored by manufacturers. A testing agency cited studies showing no adverse engine impact but said underlying reports submitted to authorities remain confidential. The statements signal industry readiness to defend E20 deployment against consumer complaints and misinformation.