New Delhi: The Union Government alongside top domestic automobile manufacturers has strongly defended the nationwide rollout of E20 ethanol-blended petrol, asserting that comprehensive scientific evaluations show no evidence of the fuel causing engine damage. The reassurance comes in response to mounting public anxieties and unverified claims circulating on social media regarding vehicle durability and compatibility, particularly concerning older models. Seeking to allay these widespread apprehensions, the Ministries of Petroleum and Natural Gas, Heavy Industries, and Road Transport and Highways brought together major industry stakeholders to clarify that the biofuel transition was executed only after rigorous laboratory testing and field validation.
Maruti Suzuki, India’s largest passenger carmaker, provided strong empirical evidence supporting the safety of the transition. Senior Executive Officer of Corporate Affairs Rahul Bharti revealed that out of 2.84 crore vehicles serviced by the company during the 2025-26 fiscal year, over 1.5 crore cars were more than three years old and not formally certified for E20 compatibility. Despite this massive number of older vehicles running on the current fuel supply, the company has not received a single field report indicating engine corrosion, abnormal mechanical wear and tear, or a premature reduction in component lifespan attributable to E20.
While carmakers confidently backed the long-term reliability of engines running on the new fuel, they acknowledged a marginal impact on fuel efficiency. Bharti explained that because E20 petrol possesses a 3 to 3.5 per cent lower calorific value than the previous E10 blend, motorists will experience a corresponding minor drop in mileage. For a standard vehicle delivering 20 kilometres per litre, this equates to a reduction of roughly 0.6 kilometres per litre. However, industry experts emphasized that everyday variables such as improper tyre pressure, aggressive driving habits, delayed vehicle maintenance, and frequent braking cause far wider real-world variations in mileage than the fuel switch itself. Furthermore, the slight energy drop is heavily countered by ethanol’s superior octane rating, which delivers enhanced anti-knocking characteristics, quicker acceleration, and substantially lower tailpipe emissions.
Echoing these observations, Toyota Kirloskar Motor’s Country Head and Executive Vice-President Vikram Gulati stated that the introduction of E20 strictly adhered to internationally recognized UNECE certification protocols. He categorized ethanol as a high-performance, clean-burning fuel that has been safely utilized for decades in global markets and elite motorsports. Gulati also clarified that recently introduced E85 dispensing stations are meant exclusively for specialized flex-fuel vehicles, signaling the future trajectory of the domestic automotive sector. Former Engineers India Limited Chair and Managing Director Vartika Shukla added that the blending roadmap conforms entirely to Bureau of Indian Standards mandates and BS-VI emission norms. Supporting this stance, Hero MotoCorp Chief Business Officer Ashutosh Varma confirmed that an extensive analysis of two-wheeler service data revealed no escalation in engine anomalies, reaffirming that the strategic energy shift remains a safe, vital measure to reduce crude oil imports and curb urban pollution.
