Exhibit 7.1

PETRÓLEOS MEXICANOS, SUBSIDIARY ENTITIES AND SUBSIDIARY COMPANIES

Computation of ratio of earnings to fixed charges

(In thousands of Mexican pesos)

	2016			2015			2014			2013			2012
IFRS
Fixed Charges:
Interest capitalized in fixed assets		3,667,752			5,258,854			3,997,121			2,943,597			2,110,075
Interest expense		132,681,656			99,271,197			73,657,618			54,067,022			72,951,202
Amortization premiums related to indebtedness		(1,610,183	)		(2,229,657	)		312,296			(1,890,710	)		1,560,478
Estimate of the interest within rental expense		500,654			450,760			242,436			159,380			214,041
Total Fixed Charges		135,239,879			102,681,154			78,209,471			55,279,289			76,835,796
Net income (loss)		(191,144,342	)		(712,567,398	)		(265,542,989	)		(170,058,427	)		2,600,478
Hydrocarbon Income Tax (IRP)		—			—			(18,735,301	)		3,787,543			2,392,919
Income Tax and Others		(40,291,940	)		(45,587,267	)		3,773,966			3,672,466			2,138,856
Cumulative effect of adoption of new accounting standards		—			—			—			—			—
Profit sharing in subsidiaries and affiliates (income from equity investees)		(2,135,845	)		(2,318,115	)		(34,368	)		(706,710	)		(4,797,607	)
Pretax income from continuing operations before income from equity investees		(233,572,127	)		(760,472,780	)		(280,538,692	)		(163,305,128	)		2,334,646
Fixed Charges:		135,239,879			102,681,154			78,209,471			55,279,289			76,835,796
Amortization of interest capitalized		146,710			210,354			159,885			117,744			84,403
Distributed income of investments shares		293,397			359,941			736,302			914,116			685,704
Interest capitalized in fixed assets		(3,667,752	)		(5,258,854	)		(3,997,121	)		(2,943,597	)		(2,110,075	)
Earnings		(101,559,893	)		(662,480,185	)		(205,430,155	)		(109,937,576	)		77,830,474
Amount by which fixed charges exceed earnings		236,799,772			765,161,339			283,639,626			165,216,865			—
Ratio of earnings to fixed charges		—			—			—			—			1.01