On October 7, 2026, our commercial truck underwent a vehicle inspection that identified serious concerns involving the air brake system, including air leakage, air pressure loss, and an issue with the air system breather. These defects raise significant safety concerns because improper air pressure in a commercial truck's braking system could compromise braking performance, potentially resulting in loss of braking capability, a serious collision, severe injuries, or fatalities. We have attempted to resolve these issues through Western Truck Center, at West Sacramento an authorized Mack Trucks dealership. Unfortunately, despite our efforts, the problems have not been satisfactorily addressed, and we have been unable to obtain a clear resolution. We are extremely concerned about the potential risk this presents to our drivers and other motorists. A commercial truck operating with a defective air brake system could pose a serious danger on public highways. We are requesting that the federal safety agency investigate this potential safety defect and determine whether corrective action is necessary to prevent a potentially catastrophic accident.
The worst 2024 Mack MD problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
Recalls 5
Seat belts: front: anchorage
- What is wrong
- 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."
- Risk
- 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 beginning October 13, 2025.
Recall number 25V666000 · Recall details
Equipment: other: labels
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2024-2025 MD and Terrapro vehicles. The Gross Axle Weight Rating (GAWR) listed on the vehicle certification label is incorrect, which can allow the vehicle to be overloaded. As such, these vehicles fail to comply with the requirements of 49 CFR Part 567, "Certification."
- Risk
- An overloaded vehicle can increase the risk of a crash.
- Remedy
- Dealers will remove and replace the label, free of charge. Owner notification letters were mailed May 28, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0463.
Recall number 24V333000 · Recall details
Parking brake: indicator light
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2024 MD6 and MD7 vehicles. The park brake light may indicate the incorrect brake status due to an incorrect park brake pressure switch.
- Risk
- The park brake light may indicate that the park brake is applied when it is not, possibly resulting in a vehicle roll away and increasing the risk of a crash.
- Remedy
- Dealers will inspect and replace the brake pressure switch as necessary, free of charge. Owner notification letters were mailed March 11, 2024. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0460.
Recall number 24V167000 · Recall details
Steering: critical fasteners
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2024 MD trucks. The steering wheel attachment bolt may loosen and separate from the steering shaft, causing the steering wheel to detach.
- Risk
- A detached steering wheel can cause a loss of steering control and increase the risk of a crash.
- Remedy
- Owners are advised not to drive their vehicles until the repair has been performed. Dealers will replace the steering wheel retention bolt, free of charge. Owner notification letters were mailed November 20, 2023. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0453.
Recall number 23V746000 · Recall details
Steering
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2024 MD6 and MD7 vehicles. The steering gear fasteners may not be properly tightened.
- Risk
- Loose steering gear fasteners may result in a loss of vehicle control, increasing the risk of a crash.
- Remedy
- Dealers will tighten the steering gear fasteners, free of charge. Owner notification letters are expected to be mailed October 23, 2023. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0449.
Recall number 23V605000 · Recall details
Technical service bulletins for the 2024 Mack MD 30
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
What 2024 Mack MD owners say
Most recent owner complaints, unedited.
Compare the 2024 Mack MD
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Questions about the 2024 Mack MD
Is the 2024 Mack MD reliable?
Owners have filed 1 complaint about the 2024 Mack MD, close to a typical MD model year.
What is the most common problem with the 2024 Mack MD?
Brakes, with 1 complaint.
How many recalls does the 2024 Mack MD have?
5 recalls, covering seat belts, equipment and parking brake.
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