PEMEX Investor Presentation

PEMEXⓇ Refining: Operational Performance Improvement Program (MDO) 230 opportunities identified in 4 out of 6 refineries... ...worth 1.2 billion USD when fully captured No. Of opportunities Conceptual stage Development Implementation Implementation/ with capital Monitoring stage Total 85 52 62 Million USD per annum Conceptual stage Development Implementation Implementation/ 10 with capital 21 Monitoring stage 230 Total Economic value amounts to a net gain of -3.39 USD/barrel, at October 2010 prices. ■■Only 9.5% of initiatives involve capital expenditure www.pemex.com Source: MDO. 569 382 110 109 1,170 33 C-0022, Pemex Investor Presentation (Sept. 2012)

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