Reliance, which operates pumps in a joint venture with UK's BP, retailed 73% more diesel last quarter, while Nayara recorded a 13.5% increase, according to industry data. The robust performance expanded RIL-BP's market share to 4.24% from 2.48% a year ago. Nayara's share grew to 5.35% from 4.79%. The combined share of state-run refiners-Indian Oil, Hindustan Petroleum and Bharat Petroleum-eroded to 90.3% from 92.7% in the quarter as their sales fell 1%.
