Winning Bizness Desk
Mumbai.The Centre has, for the first time, acknowledged that E20 petrol, which contains 20% ethanol, may affect certain components in older BS-3 vehicles. However, the government has clarified that there is no need to replace engines, as the impact is largely limited to a few rubber parts that can be changed during routine servicing.
Union Road Transport and Highways Minister Nitin Gadkari made the statement in a written reply in the Rajya Sabha on Wednesday. His clarification comes amid growing use of ethanol-blended fuel across the country as part of India's clean energy and oil import reduction strategy.
Government Clarifies Impact On Older Vehicles
Gadkari said some BS-3 compliant vehicles, mainly manufactured between 2005 and 2016, may require replacement of certain rubber components and gaskets after prolonged use of E20 petrol.
He stressed that studies have not found any significant impact on the overall performance, durability or life of such vehicles. Importantly, the minister said owners of these vehicles do not need to make any modifications to the engine.
According to the government, the affected components can be inspected and replaced during normal servicing if signs of wear or leakage appear.
Research Finds No Major Performance Loss
The government said extensive studies were conducted jointly by:
- Indian Oil Corporation (IOC)
- Indian Institute of Petroleum (IIP)
- Society of Indian Automobile Manufacturers (SIAM)
- Automotive Research Association of India (ARAI)
Based on these studies, Gadkari said E20 fuel does not significantly affect vehicle performance. He also dismissed the perception that fuel mileage depends only on petrol quality.
According to him, mileage is influenced by several factors, including driving habits, road conditions, vehicle maintenance and overall operating conditions. He added that ethanol has been used in transport fuels across the world for more than a century.
Which Vehicles May Need Attention
The government's reply indicates that vehicles built under emission standards below Euro-4 could require replacement of certain fuel-system components. This includes BS-3 compliant two-wheelers and four-wheelers manufactured before 2016.
The parts that may need replacement include:
- Fuel hoses
- O-rings
- Rubber seals
- Gaskets
- Rubber components inside fuel pumps
- Injector seals
- Pipes connected to the fuel system
Officials clarified that these are largely fuel-system components and not engine parts.
Maintenance Cost Depends On Vehicle
The government said there is no fixed timeline or mileage after which these components must be replaced. Instead, they should be checked during routine servicing and changed only if deterioration, leakage or damage is detected.
Replacement costs vary by manufacturer and model.
- Two-wheelers: Around Rs 500 to Rs 1,500
- Passenger cars: Around Rs 2,000 to Rs 8,000
- Premium luxury vehicles may involve higher costs than mass-market models
The government explained that ethanol can gradually harden, soften or swell older rubber materials that were not originally designed for long-term exposure to ethanol-blended fuel.
Rubber Components Main Area Of Concern
The Centre maintained that the impact is largely confined to rubber components, though some older metal parts in vehicles built below Euro-4 standards could also face limited effects over time.
Officials said motorists need not worry about immediate breakdowns after switching to E20 petrol. Vehicles are expected to continue operating normally, but owners of older models may have to pay closer attention to periodic maintenance and replacement of ageing fuel-system components.
The clarification marks the first official admission by the government that E20 fuel can require additional maintenance in older vehicles, while reiterating that the benefits of ethanol blending outweigh the limited maintenance requirements for ageing automobiles.
