2020 Mack MD: recalls and complaints
NHTSA advisory: do not driveCampaign 21V684000. NHTSA received the report on . 2,823 units. Service Brakes, Hydraulic / Pedals and Linkages
Remedy of campaign 21V684000, in the NHTSA record
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.
Do-not-drive advisory: A mark on a recall campaign in the NHTSA recall file. This site shows the mark as NHTSA sets it.
NHTSA lists 2 recall campaigns for the 2020 Mack MD. The newest campaign is 25V666000. NHTSA received the report on 6 Oct 2025. The NHTSA record gives the component Seat Belts / Front / Anchorage. NHTSA has no complaint on file for this model year.
This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.
Remedy of the newest campaign, 25V666000, in the NHTSA record
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.
Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.
NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on . Complaint file through . Recall file through .
Since the last update
No tracked figure of this page changed in a data update. What the log tracks
Recall campaigns
2 campaigns, newest first. 18,664 units in total.
25V666000Received . 15,841 units.
Seat Belts / Front / Anchorage
- Defect, in the NHTSA record
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, in the NHTSA record
An improperly welded seat belt anchorage bracket can detach during a crash, increasing the risk of injury.
- Remedy, in the NHTSA record
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.
Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0485. Owner notification date in the NHTSA record: .
21V684000Received . 2,823 units.
Service Brakes, Hydraulic / Pedals and LinkagesDo-not-drive advisory
- Defect, in the NHTSA record
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.
- Consequence, in the NHTSA record
An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.
- Remedy, in the NHTSA record
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.
Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0429. Owner notification date in the NHTSA record: .
The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.
Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.
Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.
Complaints by component
The NHTSA complaint file has no complaint for this model year.
Investigations
The NHTSA investigation file has no investigation that names this model year.
Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.
Other model years
The number under each year is the number of recall campaigns.
A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.
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Official channels
- NHTSA VIN lookupNHTSA shows the unrepaired recalls of one vehicle from its VIN or its license plate.
- NHTSA: report a safety problemThe NHTSA form for a complaint about a vehicle, a tire, a child seat or equipment.
- NHTSA page of the 2020 Mack MDThe recalls, the complaints and the investigations that NHTSA shows for this model year.
Cite this page
Recall Register. 2020 Mack MD: recalls and complaints. https://recallregister.com/vehicle/mack/md/2020/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through .
Sources
- Source
- NHTSA Office of Defects Investigation
- Licence
- US government work, public domain
- Recall file through
- 29 Sep 2026
- Complaint file through
- 15 May 2019
- First complaint in the file
- 1 Jan 1995
- Manufacturer in the recall file
- Mack Trucks, Inc.
The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.
Questions
- How many units are in the recall campaigns for the 2020 Mack MD?
- 18,664 units in 2 campaigns. A campaign can name other models and model years, and its units include them.
- How many recall campaigns does the Mack MD have for all model years?
- NHTSA lists 9 recall campaigns for the Mack MD, model years 2020 to 2026. 2 of them name the 2020 model year.
- Is an NHTSA investigation of the 2020 Mack MD open?
- The NHTSA investigation file has no investigation that names this model year.