PETROL and diesel have become costlier by up to 50 paise a litre in the country, barring 13 cities, after India switched over to cleaner Euro-III fuel on September 22, eight days ahead of the schedule.

The transition to a higher grade fuel will also mark the end of the road for Euro-II compliant automobiles in the country from October 1, leading to a 2-5% increase in the prices of certain bra