Using 20 per cent ethanol blended petrol (E20) marginally impacts fuel efficiency of four-wheelers that are designed for E10 fuel and can be calibrated for E20, which can be reduced with minor tuning.

Japanese two-wheeler major Yamaha on Monday said its entire motorcycle range in India would be compliant with E20 fuel by the end of this year. The company also announced that its 149cc-155 cc ...