E20 mileage impact calculator.
Find out how E20 petrol affects your mileage and fuel costs. E20 compliant cars see 1-3% drop while non-compliant vehicles may lose 5-12%.
Understanding E20 mileage impact
The mileage reduction from E20 fuel is primarily due to ethanol's lower energy density, approximately 33% less than pure petrol. According to the Ministry of Petroleum and Natural Gas, the nationwide E20 mandate aims to reduce crude oil imports and carbon emissions. For detailed vehicle-specific data, refer to the Automotive Research Association of India (ARAI) testing reports.
Use our E20 compliance checker to verify your car's status, or browse the full brand list for model-wise details.
Frequently asked questions
How accurate is this E20 mileage calculator?
This calculator provides estimates based on government data and consumer surveys. Actual mileage impact varies based on driving conditions, vehicle maintenance, and specific model. E20 compliant vehicles typically see 1-3% drop, while older non-compliant vehicles may see 5-12%.
Why does E20 petrol reduce mileage?
Ethanol has about 33% less energy per litre compared to petrol. A 20% ethanol blend (E20) has approximately 6-7% less energy than pure petrol, which directly translates to lower fuel efficiency. E20 compliant engines are calibrated to minimize this loss.