Karnataka’s 30% ethanol claim faces backlash from oil marketers over test methods

Karnataka’s assertion that its fuel contains 30% ethanol has ignited a dispute after the state’s oil marketing companies rejected the government’s test results. Indian Oil Corp (IOC), Bharat Petroleum (BP) and Hindustan Petroleum (HP) all said the sampling and testing methodology used by the central government was flawed. The three firms refused to accept the data and called for a fresh, transparent test. The disagreement comes as the state pushes for higher ethanol blending to cut fuel imports and curb emissions. ## Context Ethanol blending is a key part of India’s strategy to reduce reliance on imported crude and lower vehicle pollution. States often aim for higher blend percentages, but the process requires rigorous testing to ensure fuel quality and engine safety.