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E20 Petrol Debate: CEA Calls for E10 Fuel for Older Vehicles, Warns of Food-vs-Fuel Risks

Posted on 18th Aug 2026 11:49 am by rohit kumar

The debate over India's E20 petrol policy has intensified after Chief Economic Adviser V. Anantha Nageswaran argued that E10 petrol should continue to be available for older two-wheelers.

 

In an article published in The Indian Express, Nageswaran highlighted the potential impact of higher ethanol blending on older vehicles while also raising broader concerns about food prices, agricultural resources and water consumption.

 

His comments come as India has achieved its ethanol-blending target ahead of schedule and continues to promote ethanol as a way to reduce crude oil imports and strengthen energy security.

 

CEA Raises Concerns Over Older Two-Wheelers

 

According to Nageswaran, around 80 million older motorcycles and scooters remain on Indian roads. Many of these vehicles use carburetor-based technology developed before the introduction of newer emission standards.

 

The concern is that older vehicles may not be optimised for petrol containing 20% ethanol.

 

Nageswaran has therefore suggested continuing the availability of E10 petrol, which contains 10% ethanol, for older vehicles until they can be upgraded or replaced.

 

However, it is important to note that the broader claim that E20 universally “damages vehicles” is disputed. The government has maintained that testing has not established widespread engine damage from E20 fuel.

 

Why Is E20 Petrol Facing Opposition?

 

Ethanol contains more oxygen than conventional petrol and has different fuel characteristics. Older engines that were not designed for higher ethanol blends may therefore face compatibility and efficiency concerns.

 

Potential issues discussed in the debate include:

 

Compatibility with older engine technology

Possible deterioration of certain rubber and fuel-system components

Changes in fuel efficiency

The need for vehicle-specific compatibility testing

 

The issue is particularly relevant for owners of older motorcycles and scooters, which make up a significant portion of India's vehicle fleet.

 

Food vs Fuel: Why Ethanol Blending Is Also an Economic Issue

 

Nageswaran's concerns extend beyond vehicles. He has highlighted the potential food-versus-fuel trade-off associated with increasing ethanol production.

 

Sugarcane, maize and other agricultural commodities can be used as feedstock for ethanol. If ethanol producers compete aggressively for these crops, input costs for industries such as poultry and dairy could increase.

 

Higher feed costs could eventually affect the prices of products including eggs, chicken and milk, potentially adding to food inflation.

 

Sugarcane and Water Consumption Add to the Debate

 

Water consumption is another major concern.

 

Sugarcane is a water-intensive crop, and increasing demand for ethanol can encourage greater cultivation of sugarcane in areas where groundwater resources are already under pressure.

 

The debate, therefore, is no longer limited to whether E20 petrol is suitable for older engines. It also raises questions about how India's agricultural land and water resources should be allocated between fuel production and food production.

 

Government Defends E20 Petrol Policy

 

The government has maintained that ethanol blending provides important economic and energy-security benefits.

 

Higher ethanol blending can help reduce dependence on imported crude oil while creating an additional market for agricultural commodities and supporting farmers.

 

Government testing has also found no evidence of widespread engine damage from E20, countering broader claims that the fuel is inherently harmful to vehicles.

 

The government has also indicated that maintaining separate E10 and E20 petrol supply chains nationwide could increase logistics and distribution costs.

 

What Does the CEA Actually Recommend?

 

Nageswaran's position is not a call to abandon ethanol blending altogether. Instead, his argument is centred on caution as India considers higher ethanol blends and on providing an appropriate fuel option for older vehicles.

 

The key question is whether India can continue gaining energy-security benefits from ethanol while managing its potential effects on:

 

Older vehicles

Food prices

Sugar and maize availability

Groundwater resources

Agricultural land use

Inflation

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