Marathon Petroleum (NYSE: MPC) reported quarterly earnings of $3.98 per share which beat the analyst consensus estimate of $2.21 by 80.09 percent. This is a 40.15 percent decrease over earnings of $6.65 per share from the same period last year. The company reported quarterly sales of $36.82 billion which beat the analyst consensus estimate of $34.66 billion by 6.23 percent. This is a 8.16 percent decrease over sales of $40.09 billion the same period last year.