Guwahati, July 30 -- Vehicles manufactured under the BS-III emission norms may require replacement of certain rubber components if they regularly use E20 petrol, Union Road Transport and Highways Minister Nitin Gadkari informed the Rajya Sabha.

Replying to a question in the Upper House, Gadkari said some rubber parts and gaskets in BS-III vehicles, manufactured between 2005 and 2016, could be affected by E20 fuel, which contains 20% ethanol blended with 80% petrol. However, he clarified that studies have not found any significant impact on the overall performance of these vehicles.

The minister said there is no requirement to modify the engines of BS-III vehicles to use E20 petrol, despite the possibility that a few rubber components ma...