Karnataka Ethanol Claims Trigger Wider Petrol Checks as Centre Rejects Findings
Fuel sampling has spread beyond Karnataka as the state alleges excessive ethanol in E20 petrol, while the Union oil ministry reports compliant results from its own tests.
By Hushread Stories, from 16 outlets · First published 9 Nov 2026 · Chapter 2 of 2
Earlier: Karnataka Reports Ethanol Above E20 Limit in Petrol, Seeks Centre's Explanation
In brief
- Karnataka says eleven of fourteen petrol samples exceeded the prescribed ethanol limit, with one sample recording 31.2 percent.
- Karnataka has sought consumer compensation and regular fuel quality checks after reporting excessive ethanol levels.
- Indian Oil, Bharat Petroleum and Hindustan Petroleum reject the allegations, questioning Karnataka's sampling and testing methods.
- The Union oil ministry says all 893 samples tested across 27 states and Union Territories met prescribed standards.
- Kerala is conducting random inspections in four districts, while further laboratory results from the wider checks remain pending.
Timeline · 11 moments
Bharat Petroleum deletes post disputing Karnataka's E20 claim
India Today GK & Current Affairs ↗Joshi says oil company tests found Karnataka samples compliant
The Hindu ↗Kerala begins random fuel inspections in four districts
Mint ↗Fuel samples collected from Kannur pumps for testing
The Hindu ↗Kochi officials collect samples and send two for testing
Times of India India ↗Karnataka says fuel testing covered 67 locations
Udayavani ↗Shivakumar says thousands of complaints make issue national
India Today ↗Rahul Gandhi criticises government over excess ethanol allegations
India Today ↗Union ministry reports compliance across 893 fuel samples
Business Line - Home ↗Oil companies reject claims and question testing procedures
NDTV Top Stories ↗Update 10 Nov 2026, 9:13 am UTC
Union Minister Pralhad Joshi has questioned Karnataka's sampling and testing procedures, saying the laboratories used were not approved under notified guidelines. He said oil marketing companies tested 56 samples in Karnataka and found all compliant, with ethanol blends averaging 19.30%; Bharat Petroleum also deleted a post about its test results.
Update 10 Nov 2026, 3:12 am UTC
Kerala has joined the scrutiny, with Minister Anoop Jacob saying random inspections are under way in four districts after complaints about ethanol blending. The supplied coverage reports no new test results, so the Karnataka allegations and the dispute over testing remain unresolved.
How it started
Karnataka's allegations concern whether petrol sold as E20 actually stays within the prescribed 20% ethanol limit. According to India News, the state found higher ethanol levels in 11 of 14 samples, including an IOCL sample recording 31.2%.
The state also reported 30.5% ethanol in an HPCL sample, Mint reported. Karnataka sought action against oil companies and compensation for consumers, turning the test findings into a dispute over fuel quality and accountability.
How it unfolded
On November 6, Karnataka's findings became public alongside calls for regular fuel quality testing and consumer compensation, according to India News. The allegations concerned particular samples, rather than a finding that all E20 petrol contained excessive ethanol.
The oil companies challenged the basis of the findings that day. Indian Oil, Bharat Petroleum and Hindustan Petroleum said the reported claims were not supported by testing conducted under prescribed statutory and technical procedures, NDTV Top Stories reported.
On November 7, the Union oil ministry rejected Karnataka's charge. Government-backed testing of 893 samples across 27 states and Union Territories found E20 petrol compliant with prescribed quality standards, according to Business Line. The ministry said its 56 Karnataka samples recorded ethanol content of 19% to 20%, averaging 19.30%, NDTV India reported.
The disagreement also became a political issue. On November 7, Rahul Gandhi criticised the government over the excess-ethanol allegations, India Today reported. On November 8, DK Shivakumar described the issue as a national concern and said he had received thousands of complaints, according to India Today.
By November 9, sampling had spread to Kerala. NDTV Top Stories reported that the state was collecting random fuel samples. In Kochi, officials took six samples and forwarded two for laboratory testing in Kakinada, according to Times of India India.
Where it stands
The central disagreement remains unresolved in the supplied coverage. Karnataka reports samples well above the ethanol limit; the Union oil ministry reports compliant samples, including those it tested in Karnataka. The oil companies dispute the state's methods, rather than accepting its results, according to Mint.
The sampling effort has widened. Karnataka said testing covered 67 locations, according to Udayavani, while The Hindu reported fuel samples collected in Kannur. The supplied coverage does not include results from those Kerala checks or a resolution of Karnataka's compensation demand.
What to watch
The next concrete evidence will be the laboratory results from the newly collected samples, including those sent from Kochi to Kakinada, as reported by Times of India India. Those results could help establish whether other locations show the unusually high ethanol levels Karnataka reported.
The testing dispute also needs an answer. Mint reported that the oil companies questioned sampling and testing methods. Establishing whether the competing results were obtained through comparable, prescribed procedures is necessary before treating either set as a direct rebuttal of the other.


