Karnataka Accuses Oil Firms of Exceeding 20% Ethanol Cap in Fuel, Seeks Relief for Motorists

The Karnataka government has raised serious concerns over the quality of commercial motor fuel, alleging that state-run and private oil marketing companies (OMCs) are blending ethanol well beyond the prescribed 20% regulatory threshold for E20 petrol. Independent laboratory testing commissioned by the state revealed ethanol levels reaching as high as 31.2%, prompting state authorities to urge the Central government to create a dedicated compensation mechanism for affected motorists.

Independent Lab Tests Confirm Discrepancies

The issue surfaced after the state government collected 63 petrol samples from retail fuel stations across seven districts, including Bengaluru Urban, covering major brands such as Indian Oil Corporation (IOCL), Hindustan Petroleum (HPCL), Bharat Petroleum (BPCL), Nayara Energy, and Shell.

According to state officials, fuel retail testing facilities initially failed to provide precise ethanol concentration figures. Consequently, the samples were sent to the Shriram Institute for Industrial Research in Bengaluru—an ISO and NABL-accredited testing facility—which confirmed ethanol concentrations significantly exceeding permissible norms.

Brand-Wise Test Results

Laboratory findings across multiple retail samples showed higher-than-stipulated blending ratios across key suppliers:

Financial Impact Estimated at Over ₹1 Lakh Crore

Karnataka’s Minister for Food, Civil Supplies, and Consumer Affairs, Rizwan Arshad, called on the Central government to disclose the exact composition of fuel sold at pumps nationwide. State estimates project substantial economic strain on consumers due to off-spec fuel:

• Mileage Reduction: A projected 10% drop in vehicle fuel efficiency caused by excess ethanol could cost Indian motorists an estimated ₹62,000 crore annually.
• Elevated Maintenance Burden: Accelerated engine wear, fuel system corrosion, and frequent component repairs could generate an additional ₹39,000 crore in nationwide maintenance costs.
• Call for Relief Mechanism: The state administration has formally requested the Union government to establish a dedicated financial redressal fund to assist vehicle owners facing mechanical breakdowns and inflated operating expenses.

Ethanol Production Generations in India

The development comes alongside ongoing government initiatives to scale domestic biofuel blending via multiple feedstock pathways:

• First-Generation (1G) Ethanol: Sourced directly from food and sugar-rich crops, including sugarcane juice, sugar beet, surplus corn/maize, sweet sorghum, and damaged food grains.
• Second-Generation (2G) Ethanol: Derived from non-food agricultural residue and lignocellulosic materials, such as paddy straw, wheat straw, corn cobs, bamboo, and woody biomass.
• Third-Generation (3G) Biofuels: Sourced from algae and micro-organisms, currently serving as a key research and development priority for clean fuels.