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E20 Petrol Is Here – But Is Your Car Ready for It?

21 Aug 2025

Attention car owners in India. There’s been a major change popping up in petrol stations across the country , and you need to know about it. E20 fuel which is a new type of fuel  it is  a blended fuel containing 20% ethanol and 80% petrol and is part of India’s larger scheme to transition to cleaner energy and improve self sufficiency through lower dependency on foreign oil.

The differences between E20 and petrol are ;, as on the one hand, E20 provides cleaner air, and more income for farmers, however, there may be some challenges for your car’s performance and your monthly fuel bill. Let’s take a closer look at what E20 petrol means for your car, your pocket, and the road ahead.

What is E20 Petrol?

E20 petrol is a fuel blend that incorporates 20% ethanol with 80% standard petrol.

But what is ethanol, exactly?

Ethanol is a renewable, clean-burning biofuel made from fermenting sugarcane, corn or grains. In other words, ethanol is an alcohol-based fuel that is completely derived from plants, not crude oil. As a renewable fuel, it allows us to wean and minimize reliance on imported petrol, and releases lower harmful emissions into the atmosphere.

Therefore, “E20” simply means:

• E = Ethanol

• 20 = 20% ethanol

• Petrol = 80% petrol

In conclusion: E20 is a fuel blend made from petrol and a bio-fuel, which is making driving cleaner and more sustainable.

Know: Cars Getting Cheaper Soon in India GST Reform May Save You Lakhs!

Why E20 Petrol Could Change the Way India Drives

E20 petrol is being viewed as a milestone in regard to India’s transport sector. It’s not just another blend, it has advantages for the environment, economy and even the way in which your car runs. 

  • Cleaner Roads, Cleaner Air : E20 helps reduce carbon emissions which will enable us to tackle the consuming pollution levels clouding our cities.
  • A Boost for Farmers : Ethanol is produced from various crops such as sugarcane and grain and can open up a steady income for farmers.
  • Cutting Down Imports : Each litre of ethanol blended in petrol reduces reliance on costly crude oil imports.
  • Better for New Cars : E20’s higher octane rating offers smoother driving and less engine knocking for vehicles that are designed to run on it.
  • A Step Towards the Future : Most importantly, it supports India’s orientation towards renewable energy and development in a sustainable way.

Is Your Vehicle Compatible with E20 Petrol?

Now we can address the question most car owners are interested in; can your car run on E20 without any problems?

  • Newer Cars (Post-2023 Models) : Most cars made after April 2023 should run perfectly fine on E20 fuel. The vehicles have ethanol resistant parts and the engines are tuned to operate on the 80/20 blend.
  • Older Cars (Before 2023) : All vehicles that were manufactured before BS6 Phase 2 should be able to process E20 fuel and not have an issue. But rubber seals, pipes and gaskets will wear slower in coup-type vehicles compared to SUV-type vehicles and in general. Therefore, there is a good chance that your car will run fine on E20, but you may have to make adjustments or increase your maintenance schedule.
  • Two-Wheelers :  Similar to cars, many new bikes are also being designed to process E20, which will not be an issue. However, older bikes may face similar challenges as cars with reduced mileage or faster wear on certain components.

The Hidden Downsides of E20 Petrol You Can’t Ignore

While E20 petrol provides cleaner energy and its advantages on the whole, there are several practical considerations owners should think about. For the most part you’re not fighting a losing battle, especially if your vehicle was not designed for the blend. 

1. You Might Lose Mileage

Ethanol has a lower energy content than petrol, meaning that your vehicle may travel fewer kilometers with the same quantity of fuel. You may only find a small drop in kilometers for newer vehicles around 5-7% but older vehicles may show a larger drop which could affect your fuel costs per month. And remember, apart from fuel, keeping track of penalties like traffic fines also matters. You can easily Check E Challan online to avoid unexpected costs

2. Older Vehicles May Become an Issue

Vehicles built before April 2023 weren’t exactly constructed for E20. If your vehicle was built prior to this date, the numerous rubber parts seals, gaskets, and fuel lines specially may wear out faster when exposed to higher levels of ethanol. There is an opportunity for these parts to deteriorate gradually, and effect leaks, efficiency, or costs of maintenance.

3. Performance Will Change

Unless you had E20 in your car before 2023, expect to experience some differences in the feel of your vehicle. Some drivers may feel rough idling, poor pickup or slight gripping or vibrations. These are not dangerous, but will make it a less enjoyable drive, and will suggest the engine is adapting to the blend.

What Car Owners Can Do 

Instead of worrying, here’s what you can do to be proactive: 

  • Find out if your car is E20-compliant: Most vehicles manufactured after 1 April 2023 would be designed to accommodate this fuel. For older vehicles, check your owner’s manual or contact your manufacturer. 
  • Upgrade small components: If your vehicle can only accommodate E0 or E10 fuel, you can easily swap out the ethanol-compatible seals and pipes and it is a cheap option. 
  • Monitor fuel efficiency: Take note of how your car is running for a few months in terms of fuel consumption. If it starts to dip unexpectedly you may just need a tune-up. 
  • General servicing: Mechanics are starting to prepare for this, so simply having your vehicle serviced can help you catch problems prior to them occurring.

Check: Relief for Delhi’s Old Vehicle Owners: Supreme Court Pauses Ban for Now

Which Cars Should Use E20 Petrol and Which Shouldn’t?

CategoryCan Use E20 PetrolShould Avoid / Be Cautious
New Cars (Post-April 2023, BS6 Phase 2)Yes, fully compatible. Engines and fuel parts are designed to handle E20 safely.
Recent Two-WheelersMany newer bikes are now E20-ready. Check your manual to confirm.
Older Cars (Pre-2023 Models)Can run on E20, but may face reduced mileage and faster wear on parts like seals and fuel pipes.Recommended to use lower ethanol blends if available.
BS3 & BS4 VehiclesNilNot suitable. High risk of performance issues, rough idling, and long-term damage.

Conclusion 

For India, E20 petrol represents a significant step toward a cleaner and more self-sufficient future. Newer vehicles are well accustomed to the fuel. The older vehicles however, will require extra care and consideration. The main theme is understanding which cars can use E20 and if small modifications are necessary. If you know how to proceed, there is no issue in using E20 without compromising performance or safety.

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