Unproven claims that oil companies sell petrol with over 20% ethanol blend in Karnataka?

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The claim that oil companies are illegally blending over 20% ethanol into petrol rests on Karnataka government test reports that central authorities strongly dispute. Karnataka's food and civil supplies department released lab reports from an accredited institute showing petrol samples with up to 31.2% ethanol. However, the Union Petroleum Ministry and public sector oil marketing companies rejected the claims, citing improper sampling procedures and nationwide tests of 893 samples that showed full compliance within 19–21% ethanol limits. No independent official inquiry or court finding has settled the dispute.

5 claims checked
5 sources
Checked 9 Nov 2026
Main source: Lab tests show ethanol blend in petrol as high as 31% in Karnataka - The Hindu

The post we checked

E20 बना 420 - जनता की गाड़ी से पेट्रोल चोरी! मोदी सरकार कहती है - पेट्रोल में 20% एथेनॉल है। कर्नाटक सरकार ने 7 ज़िलों से पेट्रोल के सैंपल लेकर मान्यता प्राप्त…

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Red flags

Accounts don't match

Karnataka's consumer affairs department and the Union Petroleum Ministry reported conflicting test results for petrol samples in Karnataka, with state tests finding ethanol levels up to 31.2% and central tests showing compliance at 19–20%.

“The Centre and Karnataka are disputing test results for petrol sold as E20, which contains about 20% ethanol.” Centre contests Karnataka’s E20 findings and seeks joint fuel testing | News Blitz | Clarity UPSC, 2026-11-08

What we checked

The Karnataka government tested petrol samples from 7 districts at NABL accredited and ISO certified laboratories.“The Department of Food, Civil Supplies and Consumer Affairs, Karnataka, later got the same samples tested at laboratories recognised by the National Accreditation Board for Testing and Calibration Lab”Lab tests show ethanol blend in petrol as high as 31% in Karnataka - The Hindu

11 out of 14 petrol samples tested had an ethanol content of more than 20%.No reliable source found for this yet.

An IOCL petrol sample showed an ethanol content of 31.2%.No reliable source found for this yet.

An HPCL Petrol (Power) sample showed an ethanol content of 30.5%.No reliable source found for this yet.

In-house laboratories of IOCL and BPCL did not disclose ethanol content in their initial test reports.No reliable source found for this yet.

What the post doesn't tell you

The Reel presents Karnataka's lab results as settled proof of illegal over-blending, omitting that the Union Petroleum Ministry and oil companies rejected the claims and provided counter-evidence from 893 nationwide compliant test samples.
Public sector oil marketing companies (IOCL, BPCL, HPCL) stated that Karnataka's claims were not supported by tests conducted under statutory procedures, asserting all E20 fuel supplied nationwide conforms to BIS standard IS 17021 (The News Minute, ANI).
The Ministry of Petroleum and Natural Gas rejected Karnataka's findings, questioning state sampling methodology and citing a quality exercise of 893 samples across 27 states (56 in Karnataka) that were 100% compliant with 19–21% ethanol standards (Clarity UPSC, IANS).

Short version

❓ NO PROOF YET 👉 Claims that oil companies are selling petrol with over 20% ethanol in Karnataka are unproven, as state lab tests face strong dispute from central authorities. 👉 Karnataka reports found up to 31.2% ethanol, but the Union Petroleum Ministry rejected this, stating 893 national samples met the 19–21% limits. 🔎 Full check: send this post to @checkthis.chat