2013-01-30 13:14:40 -

FINDLAY, Ohio, Jan. 30, 2013 - Marathon Petroleum Corporation (NYSE: MPC)
announced today that its board of directors has approved an additional $2
billion share repurchase authorization. The board also extended the remaining
$650 million share repurchase authorization announced on Feb. 1, 2012, for a
total outstanding authorization of $2.65 billion through December 2014. MPC may
utilize various methods to effect the repurchases, which could include open
market repurchases, negotiated block transactions, accelerated share repurchases
or open market solicitations for shares, some of which may be effected through
Rule 10b5-1 plans. The timing of repurchases will depend upon several factors,
including market and business conditions, and repurchases may be discontinued at
any time.

The board also declared a fourth-quarter dividend of 35 cents per share on
Marathon Petroleum Corporation common stock. The   dividend is payable March
11, 2013, to stockholders of record as of the close of business on Feb.
20, 2013.

"Our focus has remained on returning capital to our shareholders while
continuing to make value enhancing investments in the company. Our strong
financial position and operating cash flow enabled us to increase our dividend
by 40 percent in 2012 and to execute two accelerated share repurchase programs
totaling $1.35 billion. Today's announcement builds upon our continuing
commitment to our shareholders," said MPC President and CEO Gary R. Heminger.

MPC will provide an update on its 2012 fourth-quarter and year-end results
through an earnings news release, to be followed by a conference call scheduled
for today at 10 a.m. ET. Interested investors can listen to the conference call
on MPC's website at  www.marathonpetroleum.com by clicking on the "2012
Fourth-Quarter Financial Results" link.


                                     # # #


About Marathon Petroleum Corporation
MPC is the nation's fifth-largest refiner, with a crude oil refining capacity of
approximately 1.2 million barrels per calendar day in its six-refinery system.
Marathon brand gasoline is sold through approximately 5,000 independently owned
retail outlets across 17 states. In addition, Speedway LLC, an MPC subsidiary,
owns and operates the nation's fourth largest convenience store chain, with
approximately 1,460 convenience stores in seven states. MPC also owns, leases or
has ownership interests in approximately 8,300 miles of pipeline. Through
subsidiaries, MPC owns the general partner of MPLX LP, a midstream master
limited partnership. MPC's fully integrated system provides operational
flexibility to move crude oil, feedstocks and petroleum-related products
efficiently through the company's distribution network in the Midwest, Southeast
and Gulf Coast regions. For additional information about the company, please
visit our website at  www.marathonpetroleum.com.

Investor Relations Contacts:
Pamela Beall (419) 429-5640
Beth Hunter (419) 421-2559

Media Contacts:
Angelia Graves (419) 421-2703
Jamal Kheiry (419) 421-3312



This press release contains forward-looking statements within the meaning of
federal securities laws. These forward-looking statements relate to, among other
things, MPC's expectations, estimates and projections concerning MPC business
and operations. You can identify forward-looking statements by words such as
"anticipate," "believe," "estimate," "expect,"
"forecast," "project," "could,"
"may," "should," "would," "will" or other similar
expressions that convey the
uncertainty of future events or outcomes. Such forward-looking statements are
not guarantees of future performance and are subject to risks, uncertainties and
other factors, some of which are beyond the issuer's control and are difficult
to predict. Factors that could cause actual results to differ materially from
those in the forward-looking statements include: volatility in and/or
degradation of market and industry conditions; the availability and pricing of
crude oil and other feedstocks; slower growth in domestic and Canadian crude
supply; completion of pipeline capacity to areas outside the U.S. Midwest;
consumer demand for refined products; transportation logistics; the reliability
of processing units and other equipment; our ability to successfully implement
growth opportunities; impacts from our repurchases of shares of MPC common stock
under our stock repurchase authorization, including the timing and amounts of
any common stock repurchases; state and federal environmental, economic, health
and safety, energy and other policies and regulations; other risk factors
inherent to our industry; and the factors set forth under the heading "Risk
Factors" in MPC's Annual Report on Form 10-K for the year ended December
31, 2011 filed with the Securities and Exchange Commission (the "SEC"). In
addition, the forward-looking statements included herein could be affected by
general domestic and international economic and political conditions.
Unpredictable or unknown factors not discussed here or in MPC's Form 10-K could
also have material adverse effects on forward-looking statements. Copies of
MPC's Form 10-K are available on the SEC website, at
 ir.marathonpetroleum.com or by contacting MPC's Investor Relations
Office.


MPC 4Q Dividend & Share Repurchase: 
 hugin.info/147922/R/1674022/545041.pdf



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     originality of the information contained therein. 
    
Source: Marathon Petroleum Corporation via Thomson Reuters ONE
[HUG#1674022]