Allison Transmission (NYSE:ALSN) reported quarterly earnings of $2.15 per share which missed the analyst consensus estimate of $2.45 by 12.24 percent. This is a 6.11 percent decrease over earnings of $2.29 per share from the same period last year. The company reported quarterly sales of $860.000 million which missed the analyst consensus estimate of $1.509 billion by 43.02 percent. This is a 5.65 percent increase over sales of $814.000 million the same period last year.