Investor Presentaiton

IOC - The Largest Refiner in India Strategic Presence With Access to High Demand Markets Leader in Refining Market Share(1) Koyali Panipat Mathura Chennai Narimanam Bongaigaon Barauni Guwahati Haldia Paradip Digboi Strategically placed with access to high demand market of North India Note: Figures as of March 31, 2017 Importing Crude from Across the Globe North America 0.23% Middle East 66.3% Africa 28.13% Central Asia 1.50% Total crude oil im port: 63.79 MMT (including 7.74 MMT for CPCL) Figures for FYE 2017 Capacity(69.2 MMT) Subsidiary Cos. (11.5 MMT) South East Asia 3.84% Source: Company Filing (इंडियन ऑयल IndianOil 35% 26% 10% 13% 9% 7% IOC Reliance Note: Figures as of March 31, 2017. HPCL BPCL Essar Oil ONGC Source: PPAC website (1) Market share based on group Refining Capacity Refinery Throughput (MMT) Capacity Utilization* (%) 105 104 65 54 57 99 FY 15 FY 16 FY 17 78.8 FY 15 FY 16 *Excluding Paradip Refinery FY 17 Source: Company Filing Steady Distillate Yields* (%) 80.6 79.3 FY 15 *Excluding Paradip Refinery FY 16 FY 17 Source: Company Filing Changing Crude Mix for Enhanced Profitability Type of Crude Oil Used High Sulphur 52% Low Sulphur 48% ✓ Producing Euro IV grade fuels ✓ Preparing for Euro VI FY 17 Note: All figures for the year ended March 31 of the respective years. Source: Company Filing 5

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