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
| Model / family | Application | Overview | Model notes |
|---|---|---|---|
| mDRIVE | Highway automated manual family | mDRIVE 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. | Read the profile → |
| mDRIVE HD | Vocational automated manual family | Mack 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. | Read the profile → |
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.
Manufacturer references support the model facts. Our examples and comparisons are editorial interpretation prepared with AI assistance, not road tests or an expert inspection.
Check the year, market and exact build before applying a specification. This guide does not authorize parts fitment, repairs, modifications or loading.
Mack manufacturer reference ↗Independent editorial resource. Brand names identify equipment; they do not imply a partnership or endorsement.