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2023 Mack MDProblems, recalls & complaints

NHTSA has logged 1 owner complaint about the 2023 Mack MD, most often about the engine. It is covered by 2 safety recalls, and for recall 25V-666 the manufacturer reports only 34% of affected cars repaired.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls2Lowest repair rate 34%Owner complaints10 with a crash, fire or injuryTop problem1Engine

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through June 17, 2026. Updated daily.

Complaints by system

Where the 2023 Mack MD has problems

1 complaint grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine10
Fuel/propulsion system10
Power train10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

2 recalls

2023 Mack MD recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

34%repaired · 2026 Q3

Front: anchorage

Recall 25V-666 · Oct 6, 2025 · 15,841 vehicles · 5,422 repaired

Risk. An improperly welded seat belt anchorage bracket can detach during a crash, increasing the risk of injury.

Problem, fix and repair progress →

35%repaired · 2024 Q2

Engine: engine control module (ecu/ecm)

Recall 22V-606 · Aug 9, 2022 · 150 vehicles · 52 repaired

Risk. An unexpected engine shut down can increase the risk of a crash.

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mack.

Best & worst years

2023 vs. every other MD year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the MD median. How we score

'20'21'22'23'24'25'26
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
In owners' words

What MD owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are 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…
Complaint 11744905 · Jun 17, 2026

Own a 2023 MD?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.