The 2023 Mack Md has 2 NHTSA recall campaigns affecting an estimated 15,991 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 3 complaints with NHTSA, most often about the engine. Last updated July 5, 2026.
Recall campaigns
SEAT BELTS25V6660002025-10-0615,841 affected
Defect
Mack Trucks, Inc. (Mack) is recalling certain 2020-2025 Mack MD, 2019-2025 Anthem, Granite, 2024 MD Electric, and 2025 Pinnacle trucks equipped with a passenger bench seat. The seat belt anchorage bracket may be improperly welded. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle…
Consequence
An improperly welded seat belt anchorage bracket can detach during a crash, increasing the risk of injury.
Remedy
Dealers will install a reinforcement plate, free of charge. Owner letters were mailed January 21, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0485. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning October…
ENGINE AND ENGINE COOLING22V6060002022-08-09150 affected
Defect
Mack Trucks, Inc. (Mack) is recalling certain 2023 MD6/7 trucks. The engine control module (ECM) may experience an internal short-circuit, which can result in an unexpected engine shut down.
Consequence
An unexpected engine shut down can increase the risk of a crash.
Remedy
Cummins will replace the ECM, free of charge. Owner notification letters were mailed on September 27, 2022. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0438.
Complaints by component
ENGINE
1
FUEL/PROPULSION SYSTEM
1
POWER TRAIN
1
Total complaints3
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“Components that failed: multiple systems failed in a connected chain. (1) the dpf aftertreatment differential pressure sensor — a confirmed manufacturing defect per cummins recall t7186/t7187 (jan 2026). (2) the allison automatic transmission — catastrophic internal failure: torque converter…”
“Components that failed: multiple systems failed in a connected chain. (1) the dpf aftertreatment differential pressure sensor — a confirmed manufacturing defect per cummins recall t7186/t7187 (jan 2026). (2) the allison automatic transmission — catastrophic internal failure: torque converter…”
“Components that failed: multiple systems failed in a connected chain. (1) the dpf aftertreatment differential pressure sensor — a confirmed manufacturing defect per cummins recall t7186/t7187 (jan 2026). (2) the allison automatic transmission — catastrophic internal failure: torque converter…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2023 Mack Md as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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