India may soon take a significant step toward expanding ethanol-based fuel usage, as industry bodies have proposed a low-cost conversion kit that could potentially transform existing petrol cars into flex-fuel vehicles. If approved, the upgrade could allow vehicles to run on ethanol-blended fuels such as E85 and even E100.

The proposal, put forward by the Indian Sugar and Bio-Energy Manufacturers Association (ISMA), suggests that petrol vehicles could be converted using a specialized ethanol conversion kit costing around ₹15,000. However, the technology is still under testing and has not yet received official approval for commercial rollout in India.

What Is the Proposal About?

The idea is to allow existing petrol car owners to upgrade their vehicles instead of purchasing new flex-fuel models. If implemented, this could make ethanol-based mobility more affordable and accelerate India’s shift toward cleaner fuel alternatives.

According to ISMA, widespread adoption would depend on approval from government bodies, automobile manufacturers, and regulatory agencies.

Testing Conducted on a Maruti Suzuki Vehicle

To evaluate feasibility, ISMA imported ethanol conversion kits and collaborated with IIT Delhi for testing. A BS4-compliant Maruti Suzuki Swift Dzire was used in trials, where the vehicle ran on multiple fuel blends including E20, E85, and E100.

During testing, the car reportedly covered between 5,000 and 10,000 kilometers without major mechanical issues. Based on these results, ISMA claims that properly calibrated kits could be used for both BS4 and BS6 petrol vehicles.

However, experts caution that results from a single vehicle cannot guarantee uniform performance across all car models, as engine design, fuel systems, and emission controls vary significantly.

How Does the Conversion Kit Work?

An ethanol conversion kit typically includes:

• Ethanol compatibility sensors

• Modified engine control software

• Fuel injection adjustments

• Cold start support system

• Ignition timing calibration

• Ethanol-resistant components

Since ethanol has lower energy density than petrol, vehicles may consume more fuel to deliver the same performance.

Cost Factor: Is ₹15,000 Realistic?

The proposed ₹15,000 price tag makes the idea attractive compared to buying a new flex-fuel vehicle. However, the final cost could be higher due to:

• Installation charges

• Certification and regulatory approval

• Vehicle inspection requirements

• Possible component replacements

Experts suggest the actual cost may vary depending on the vehicle type and condition.

E85 Fuel Rollout in India

India has already begun introducing E85 fuel, with availability starting at select petrol pumps. The rollout plan includes:

• 48 petrol pumps initially

• Expansion to 500 pumps by December 2026

• Around 5,000 pumps by 2027

E85 is currently priced lower than conventional petrol by approximately ₹20 per litre. However, because ethanol provides lower mileage, overall savings will depend on driving patterns and vehicle efficiency.

Key Takeaway

While the ₹15,000 flex-fuel conversion proposal is promising, it is still in the testing phase and not yet approved for mass use. If cleared by regulators, it could offer a cost-effective way to upgrade existing petrol cars and support India’s transition toward cleaner fuel alternatives.