Key facts
- India has mandated E20 fuel, a blend of 20% ethanol and 80% petrol, as the standard at all fuel stations.
- Drivers are complaining of engine wear, lower fuel efficiency, and reduced performance in vehicles not designed for the higher ethanol blend.
- Automakers and the government assert that E20 fuel has undergone extensive testing and does not damage engines.
- The government aims to reduce oil import dependence, support farmers, and cut carbon emissions through the biofuel initiative.
- Concerns persist regarding warranty coverage for older vehicles using E20 and potential long-term wear and tear.
India's nationwide rollout of E20 fuel, a blend of 20% ethanol and 80% petrol, is facing significant opposition from motorists who claim it causes engine damage, reduces fuel efficiency, and increases maintenance costs. The government, however, maintains that the fuel has undergone extensive testing and is safe for vehicles, dismissing complaints as misinformation.
The E20 blend became the standard at all fuel stations in April, replacing the previous 10% ethanol blend. While unblended petrol is still available, it is considerably more expensive. Consumers have taken to social media and protests to voice their grievances, particularly owners of vehicles manufactured before 2023, which were not designed for the higher ethanol content.
Automakers, including Maruti Suzuki, have publicly supported the E20 mandate, stating that years of testing and service data show no widespread vehicle damage. However, they acknowledge a 3-3.5% decrease in fuel efficiency due to ethanol's lower energy content, with some independent estimates suggesting a much higher drop.
The government's broader objective with the biofuel push is to decrease reliance on imported oil, support domestic agriculture, and reduce carbon emissions. Ethanol burns cleaner than traditional petrol and is produced from crops like sugarcane and maize.
Critics argue that India has rushed the transition, moving from a 10% blend in 2022 to a mandatory 20% by 2025, significantly faster than other countries that allowed vehicles more time to adapt. This rapid shift has fueled concerns about potential long-term effects like corrosion in fuel systems and accelerated wear and tear, especially for older vehicles.
Further complicating the issue are uncertainties surrounding vehicle warranties and insurance. An initial suggestion by insurer ICICI Lombard that using E20 in non-compliant vehicles could void policies was later retracted, but questions remain about whether fuel-related damage would be covered under standard motor insurance, which typically excludes wear and tear.