Allison Transmission (NYSE:ALSN) reported quarterly earnings of $1.18 per share which missed the analyst consensus estimate of $1.54 by 23.53 percent. This is a 41.29 percent decrease over earnings of $2.01 per share from the same period last year. The company reported quarterly sales of $737.000 million which beat the analyst consensus estimate of $723.163 million by 1.91 percent. This is a 7.41 percent decrease over sales of $796.000 million the same period last year.