Kerala Starts E20 Petrol Checks in Four Districts

Kerala began inspections and petrol-sample collection in four districts on 9 November 2026 to check whether fuel outlets comply with the prescribed ethanol-blending limit. E20 petrol contains 20% ethanol blended with petrol.

Competing test findings

The Karnataka Government alleged that tests of 63 petrol samples found ethanol levels above the prescribed 20% limit, with some reportedly exceeding 30%. The Centre and oil marketing companies Indian Oil Corporation Limited, Bharat Petroleum Corporation Limited and Hindustan Petroleum Corporation Limited challenged the findings, citing concerns about sampling and testing methods. The Ministry of Petroleum and Natural Gas said 893 samples tested across 27 states and union territories complied with prescribed standards.

Kerala’s checks cover Thiruvananthapuram, Ernakulam, Kozhikode and Kannur. The inspections extend scrutiny of the blending levels beyond Karnataka.

Important Facts for Exams

• Production sequence: Fuel ethanol is commonly made by yeast fermentation of sugars, followed by distillation and dehydration; denaturing may also be used.
• Water absorption: Ethanol absorbs atmospheric moisture, which can dilute fuel and cause ethanol–petrol blends to separate into phases.
• Octane property: Ethanol’s high octane rating makes it suitable for high-compression engines, a property relevant to its use as a petrol-blending component.