With xFE, Allison has taken fuel economy to the next level. xFE is another in a string of innovative, fuel-saving ideas from Allison, a leader in bus transmission technology. New gear ratios allow the torque converter to lock up at lower speeds, improving
fuel economy by up to seven percent in xFE-equipped vehicles. This seven percent improvement in fuel economy is in addition to the already greater efficiency created by Allison’s FuelSense®, a unique package of software and electronic controls
that supports an advanced array of features. The combination of these packages provides a substantial fuel economy advantage.