E20 petrol scare: SIAM warned of car damage, then withdrew its letter

Mumbai: The Society of Indian Automobile Manufacturers (SIAM) had raised concerns over possible fuel quality issues after receiving reports of vehicle component failures. In a letter sent to the Ministry of Petroleum and Natural Gas (MoPNG) on July 28, SIAM said investigations into failures of vehicle parts indicated possible corrosion and wear linked to high chloride levels and moisture content in fuel.

The industry body said such contamination could affect components including fuel pumps, fuel injectors and Exhaust Gas Recirculation (EGR) valves.

SIAM warned that chloride contamination could damage engine parts over time and urged authorities to include chloride limits in E20 fuel specifications and strengthen quality checks at fuel outlets.

SIAM later withdraws its letter

After the concerns gained public attention, SIAM announced that it had withdrawn the communication.

The automobile industry body said some figures and observations mentioned in the letter required further authentication through wider data collection and consultation with vehicle manufacturers.

SIAM clarified that the communication was part of technical discussions and not a final conclusion on E20 fuel safety.

The body also acknowledged existing government measures on fuel quality monitoring.

Government says fuel standards are being monitored

The Ministry of Petroleum and Natural Gas has maintained that fuel quality is regulated through established testing procedures.

The ministry has introduced a limit of 3 parts per million (ppm) for chloride and sulphur levels in ethanol used in the petrol blending supply chain.

Oil marketing companies have also informed authorities that additional checks, including water ingress testing, are being carried out frequently at fuel stations.

According to SIAM, checks are reportedly conducted multiple times daily across more than 87,000 fuel outlets.

What is E20 petrol?

E20 petrol is a blend containing 20% ethanol and 80% petrol.

India has been increasing ethanol blending as part of its strategy to reduce dependence on imported crude oil, lower emissions and support domestic ethanol production.

The transition to E20 fuel has required automobile manufacturers to develop vehicles compatible with higher ethanol content.

Why vehicle owners are concerned

The original SIAM communication created concerns among consumers over whether E20 petrol could affect vehicle performance and maintenance costs.

Industry observers said possible fuel-related failures could increase repair expenses and warranty claims for automobile manufacturers if widespread issues emerge.

However, SIAM’s withdrawal means that further technical assessment and data verification will be required before drawing conclusions about any direct link between E20 fuel and vehicle damage.

Impact on automobile companies

The development is being closely watched by automobile manufacturers that are adapting to India's ethanol blending programme.

Companies need to ensure that vehicle technology, fuel quality standards and supply chain monitoring remain aligned as ethanol blending increases.

Any rise in fuel system-related complaints could affect warranty costs, customer confidence and manufacturer service operations.

E20 transition remains a major policy focus

India’s ethanol blending programme is aimed at reducing fossil fuel dependence and supporting agricultural sectors involved in ethanol production.

The government has continued to promote E20 petrol as part of its clean energy transition, while automobile companies and experts have stressed the need for consistent fuel quality and proper consumer awareness.

CJP expands campaign to include E20 fuel concerns

Meanwhile, the Cockroach Janta Party (CJP) has announced that it will include E20 fuel policy among the issues it plans to raise as a pressure group.

CJP founder Abhijeet Dipke said the organisation would focus on public advocacy rather than entering electoral politics after its recent campaign over alleged NEET-UG paper leak concerns.

The group said it would also raise issues related to unemployment and recruitment exam irregularities.

CJP spokesperson Saurav Das said the organisation intends to function as a grassroots movement focused on accountability and public issues.

What happens next?

The key focus will be on further fuel quality assessments, consumer complaints and data from automobile manufacturers. Authorities and industry bodies will continue monitoring whether any unusual increase in fuel-system-related problems occurs as E20 petrol becomes more widespread.

For now, SIAM’s withdrawal has shifted attention from allegations of contamination to the need for stronger data-backed evaluation of fuel quality and vehicle compatibility.