Mack transmissions
Mack’s mDRIVE names refer to automated manual transmissions, with HD configurations aimed at more demanding work. Full model identification and the specific engine pairing matter more than the family badge. A truck without a clutch pedal should not automatically be described as having a torque-converter automatic. Compare the installed gearbox, controls and body-power requirements with the actual route and application.
Compare the model families
mDRIVE
Highway automated manual familymDRIVE is Mack’s automated manual transmission family. It appears separately from mDRIVE HD in Mack’s transmission range. Identify the actual model and generation before assuming that a listing includes the low-speed ratios or vocational provisions described for HD versions.
mDRIVE HD
Vocational automated manual familyMack offers mDRIVE HD in 12-, 13- and 14-speed configurations. Its manufacturer material describes vocational and off-road applications, with low reduction ratios on relevant versions. The HD label should be accompanied by the exact gear configuration and PTO specification.
Bring the exact specification.
The family name helps organize your search. The build sheet, serial number and relevant manufacturer documentation identify what is installed. Compare like-for-like applications and request evidence for cost or performance claims.
Mack manufacturer reference ↗Independent editorial resource. Brand names identify equipment; they do not imply a partnership or endorsement.