The debate around E20 petrol has intensified in recent weeks, with many motorists claiming that the fuel has reduced their vehicles' mileage and raised concerns about possible engine damage. In an exclusive interaction with ABP News, Union Road Transport and Highways Minister Nitin Gadkari responded directly to the criticism, defending the government's ethanol-blending programme.
Gadkari said there is no evidence that E20 fuel damages vehicle engines. However, he noted that ethanol's lower energy content can affect mileage in some situations, particularly during highway driving.
Gadkari's remarks come days after the Centre clarified that E20 petrol may reduce fuel economy by 3-5 per cent in some vehicles while reiterating the broader objectives of the ethanol-blending programme.
Does E20 reduce vehicle mileage?
According to Gadkari, the answer depends on where and how a vehicle is driven. He explained that ethanol has a lower calorific value than petrol, which means it contains less energy per litre. As a result, fuel efficiency may decline, especially during highway driving. However, he claimed that in city traffic, where vehicles spend much of their time in lower gears, the mileage difference between petrol and E20 is minimal.
What about engine damage?
Engine safety has emerged as another major concern among motorists, but Gadkari rejected claims that E20 harms vehicles.
He challenged critics to provide verified evidence of engine damage caused solely by certified E20 fuel. If any customer experiences genuine issues, he said complaints should be taken to authorised dealers and shared with him directly.
The minister added that the ethanol-blending policy was introduced only after years of testing by institutions such as the Automotive Research Association of India (ARAI) and the Indian Institute of Petroleum (IIP).
Why did Gadkari mention authorised dealers?
Addressing complaints about lower fuel efficiency, Gadkari said motorists should not rely on their own calculations to judge a vehicle's mileage.
"You and I can't check the mileage. A car's mileage can only be checked using a company-authorised dealer's machine," he told ABP News.
According to the minister, authorised dealerships use specialised diagnostic equipment that can accurately assess a vehicle's fuel efficiency and overall performance. He suggested that drivers experiencing unusually low mileage should have their vehicles inspected through these official systems rather than relying solely on manual calculations, which can be influenced by factors such as driving style, traffic conditions, tyre pressure, road conditions, and vehicle maintenance.
Why is the government pushing E20?
The government maintains that ethanol blending is about more than fuel. Its key objectives include:
Reducing India's crude oil import bill
Improving energy security by using domestically produced fuel
Supporting farmers by increasing demand for agricultural feedstocks
Lowering vehicle emissions and promoting cleaner mobility
Last week, the Ministry of Petroleum and Natural Gas released a question-and-answer document to address concerns surrounding the Ethanol Blended Petrol Programme. While it acknowledged that E20 petrol may reduce fuel efficiency in certain vehicles, the ministry said mileage should not be considered in isolation because the policy is designed to deliver broader economic and environmental benefits.