VehicleVerdict

2023 Mack MD problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 3 complaints on file for the 2023 Mack MD — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

3

NHTSA complaints

2

Recalls

0

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 2023 compare to other MD years?

MD NHTSA complaints by model year, 2023 highlighted3 complaints2020: 0 complaints2021: 0 complaints2022: 0 complaints2023: 3 complaints2024: 0 complaints2025: 2 complaints2026: 0 complaints
MD NHTSA complaints by model year, 2023 highlighted. Red bars are years to avoid.

See all MD years to avoid →

What are the most common 2023 Mack MD problems?

ComponentComplaintsShare
Engine133%
Fuel System133%
Transmission133%

Does the 2023 Mack MD have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

25V666000Seat BeltsOctober 6, 2025 · 15,841 units

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 Safety Standard number 210, "Seat Belt Assembly Anchorages."

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 13, 2025.

22V606000EngineAugust 9, 2022 · 150 units

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.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“ 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 filed with NHTSA · Transmission · February 26, 2025

“ 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 filed with NHTSA · Fuel System · February 26, 2025

“ 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 filed with NHTSA · Engine · February 26, 2025

2023 Mack MD — common questions

Is the 2023 Mack MD reliable?

The record is thin — 3 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2023 Mack MD have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2023 Mack MD. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.