Guwahati, July 30 -- Petrol blended with 20% ethanol (E20) can reduce fuel economy by 2% to 6%, depending on the vehicle category and vintage, Union Road Transport and Highways Minister Nitin Gadkari informed Parliament on Thursday.

In a written reply to the Lok Sabha, Gadkari said tests conducted on engines and vehicles found no failures attributable to E20 fuel, despite the reduction in mileage.

"The fuel efficiency of vehicles may be reduced by 2 to 6% depending on the vehicle category and vintage. The tests for engine durability on a dynamometer and vehicle tests on road have not shown any failures due to E20," he said.

The minister said E20 fuel offers better acceleration, improved ride quality and around 30% lower carbon emission...