India's push on ethanol-blended fuel questioned by scientists and analysts

Overproduction of rice and sugarcane could be among factors driving policy

As more E20 biofuel is sold in India, questions are being asked about reduced fuel efficiency and increased wear and tear on older vehicles. © Reuters

NEW DELHI — India's nationwide shift toward fuel with a higher ethanol content to cut emissions and dependence on imported oil has raised questions among scientists and analysts about its impact on fuel economy and car owners — the majority of whom use vehicles that are not yet fully compatible.

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