Union Petroleum and Natural Gas Minister Hardeep Singh Puri said there is no widespread evidence that E20 ethanol-blended petrol damages older vehicles [1].

The dispute centers on whether fuel introduced in April 2026 [2] is compatible with engines not designed for high ethanol concentrations. This transition affects millions of vehicle owners who fear permanent engine damage and increased maintenance costs.

Addressing concerns reported in June 2026, Puri said that serviced vehicles are not facing difficulty and that manufacturers have not reported significant issues [1]. He said that India has been using E15 fuel for more than three years [2], suggesting a gradual adaptation to ethanol blends.

However, consumer data presents a different perspective. A LocalCircles survey reported by BusinessWorld found that more than one in four owners of older petrol vehicles are concerned about higher wear and tear [4]. This contradicts the government's stance that the transition is seamless for the general public.

The financial risks for owners may extend beyond mechanical failure. An ICICI Lombard spokesperson said that using a fuel a car is not designed for can be treated as improper use or negligence [3]. This suggests that insurance claims for engine damage caused by E20 fuel could be denied if the vehicle is deemed incompatible.

Industry experts indicate that cars sold before April 2023 may be non-compatible with E20 [3]. These compatibility gaps are creating hesitation in the automotive market. A survey reported by Business Today found that 43% of prospective car buyers may defer or avoid a purchase because of concerns regarding E20 and E30 fuels [5].

Despite these figures, the ministry continues to maintain that the rollout is proceeding without significant technical failure. The government's push for higher ethanol blending is part of a broader strategy to reduce oil imports and lower carbon emissions, though the impact on older internal combustion engines remains a point of contention between the state, insurers, and consumers.

There is no significant issue reported by manufacturers.

The tension between the Indian government's environmental goals and the practical limitations of older vehicle hardware creates a significant legal and financial gray area. If insurers classify the use of E20 in pre-2023 cars as 'negligence,' the cost of the green transition will be shifted directly onto the consumer, potentially accelerating the scrappage of older vehicles while depressing new car sales among cautious buyers.