Ethanol Blending Fuel’s Effect on Older Vehicles After 2023 : Big Explanation

Ethanol Blended

Ethanol Blended Effect on older vehicle as the emission regulations are getting stricter. Because of this, the government is enforcing stronger vehicle emissions regulations to lessen air pollution and adverse weather patterns. Following the implementation of the Bharat Stage-6 Emission norms by the Indian government in 2020, manufacturers developed engines that are more efficient and emit fewer pollutants.

The Indian government is about to impose more stringent emission standards, also referred to as Bharat Stage-6 Phase-2 Emission Norms, starting in 2023. Manufacturers are modifying their powertrains to emit even less pollution than the current emission standards in order to comply with these regulations, and they should use E20 grade blended fuel.

What is Ethanol Blending ?


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The process of combining ethanol with conventional fuel to produce blended fuel is known as ethanol-blending. Due to its plant-based origins, which lower greenhouse gas emissions and reliance on fossil fuels, ethanol is a renewable fuel. The purpose of blending ethanol is to lower greenhouse gas emissions and the quantity of fossil fuel used in transportation. Additionally, it can raise the gasoline’s octane rating. Since it is produced domestically through the fermentation of sugar derived from organic sources, ethanol is a renewable fuel. It emits fewer of some pollutants than conventional fuel as well.

What is E20 Fuel ?

Fuel blend E20 is composed of 80% gasoline and 20% ethanol. Given that ethanol is a sustainable resource that can be produced domestically from plant sources, E20 is thought to be a more environmentally friendly fuel option than regular fuel. In India right now, E20 fuel is not easily accessible. By 2025, the Indian government wants to blend 20% ethanol with gasoline, but this will probably take a lot of work.

E20 fuel’s negative effects on older cars

In India, using E20 fuel in an older car can have some negative consequences for the car. The possible problems with using E20 fuel in older cars are as follows:

  • Because it is corrosive, ethanol can harm rubber, plastic, or metal components that are essential to the operation of the engine. This may result in damaged engine parts, clogged fuel injectors, or a choked fuel line.
  • E20 fuel may cause decreased engine performance, such as decreased power and acceleration, or increased fuel consumption in older vehicles. As a result, the car may become less economical to drive and more costly to maintain.
  • The engine may emit more harmful pollutants like nitrogen oxides (NOx) and particulate matter (PM) if it is not built to handle higher ethanol blends.
  • If the car has problems after using E20 fuel, expensive maintenance or repairs may be necessary. This may entail changing fuel lines or other parts that ethanol corrosion has harmed.

Prevention Techniques

There are many steps that can be taken to avoid problems with older cars in India using E20 fuel. Here are some recommendations: –

  • Use only recommended fuel grade: It is recommended to use regular fuel if the vehicle is not designed to handle higher ethanol blends. This will help to mitigate the effects of ethanol on engine components. The compatible grade of fuel is always mentioned in the car manual by the manufacturer.
  • Fuel additives should be used: Fuel additives may be able to lessen the ethanol’s corrosive effects on engine parts.
  • Fuel Stabilizer should be used: The chance of engine damage can be decreased by adding a fuel stabilizer.
  • Consult with a technician: It is advised to seek advice from a reputable mechanic or authorized service center with experience working with ethanol blends if the car is having problems as a result of using E20 fuel. They can offer advice on the necessary upkeep to stop new problems.



  1. Is E20 fuel mandatory in India right now (March 2024)?
    • No, E20 fuel is not yet widely available in India. The government aims for a 20% ethanol blend by 2025, but the rollout is ongoing.
  2. What are the benefits of E20 fuel?
    • E20 fuel is considered more eco-friendly due to its renewable nature and lower greenhouse gas emissions. Additionally, it can improve the octane rating of gasoline.
  3. What are the alternatives to E20 fuel for older vehicles?
    • If your vehicle manufacturer doesn’t recommend E20, you can use the regular fuel grade specified in the owner’s manual.


  1. How does E20 fuel affect engine performance in older cars?
    • E20 fuel might cause a slight decrease in power, acceleration, and fuel efficiency in older vehicles not designed for higher ethanol blends.
  2. Can E20 fuel damage car parts?
    • Yes, the corrosive nature of ethanol can potentially harm rubber, plastic, and metal components in older engines, leading to leaks, clogged fuel lines, or damaged parts.
  3. What are some warning signs of E20 fuel damaging an older car?
    • Look for symptoms like increased engine wear, stalling, difficulty starting, or check engine light turning on.

Maintenance and Solutions:

  1. What can be done to minimize the risks of E20 fuel on older cars?
    • Always refer to the owner’s manual for the recommended fuel grade.
    • Consider using fuel additives or stabilizers designed to mitigate ethanol’s corrosive effects (consult a mechanic for recommendations).
  2. Should I replace parts in my older car before switching to E20 fuel?
    • Consulting a mechanic is recommended. Upgrading certain fuel system components like hoses and gaskets might be necessary for some older vehicles.
  3. What is the estimated cost of repairs if E20 fuel damages my car?
    • The cost can vary depending on the extent of the damage. Replacing damaged fuel lines or components can range from a few hundred to a few thousand rupees.

Future of E20:

  1. Will E20 fuel become the only option available in India in the future?
    • The government aims to increase the ethanol blend progressively. While E20 might become more prevalent, regular gasoline options might still be available for certain vehicle categories.
  2. What are car manufacturers doing to adapt to E20 fuel?
    • Newer car models are being built with materials compatible with higher ethanol blends.

Additional Concerns:

  1. Will E20 fuel affect the resale value of older cars?
    • The long-term impact on resale value is yet to be determined. However, potential maintenance concerns due to E20 use might affect buyer decisions.
  2. Are there any long-term studies on the effects of E20 fuel on older engines?
    • Long-term research on the specific impacts of E20 on various older car models is ongoing.
  3. Where can I find more information about E20 fuel compatibility with my car?
    • Consult your car’s owner’s manual or contact the car manufacturer’s authorized service center for official recommendations.
  4. Are there any government incentives for using E20 fuel?
    • The government might introduce schemes in the future to encourage the adoption of E20 fuel. Stay updated on official government announcements.

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