2021 Mack MD Problems, Complaints & Recalls
- Compared with other MD years
- Not enough data 4th of 7 for complaints
- Safety recalls
- 2 recalls: check your VIN
- NHTSA crash rating
- Not rated
NHTSA has received no owner complaints about the 2021 Mack MD so far. There are 2 safety recalls covering this model year.
- 0owner complaints
- 2safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
2021 Mack MD recalls (2)
Tap a recall to see the problem, the risk and the fix.
Seat belts:front:anchorage
Problem: 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.
Fix: 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.
Service brakes, hydraulic:pedals and linkagesDo not drive
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2020-2022 Mack MD vehicles. The cotter pin that retains the brake pedal clevis pin may not have been properly installed, which could result in an unsecured brake pedal.
Risk: An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.
Fix: Owners are advised to not drive their vehicles until the remedy has been performed. Dealers will inspect the cotter pin installation and repair it as necessary, free of charge. Owner notification letters were mailed on September 13, 2021. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0429.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Other Mack MD years
See all Mack MD problems by year, every Mack model, or the VIN decoder.
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Frequently asked questions
What are the most common problems with the 2021 Mack MD?
NHTSA has no owner complaints on file yet.
Was there a recall on the 2021 Mack MD?
Yes, 2 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2021 Mack MD a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other MD model years, the 2021 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.