2021 Mack Anthem (an) Problems, Complaints & Recalls
- Compared with other Anthem (an) years
- Not enough data 3rd of 9 for complaints
- Safety recalls
- 5 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 2 complaints with NHTSA about the 2021 Mack Anthem (an). That ranks 3rd out of 9 Anthem (an) model years for complaints. The most reported problem area is back over prevention (1 complaints, 50%). Complaints mention 1 crash. There are 5 safety recalls covering this model year.
- 2owner complaints
- 5safety recalls
- 0NHTSA investigations
- 1complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2021 Mack Anthem (an) problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Back Over Prevention | 1 | 50% | — | — | — |
| Fuel/propulsion System | 1 | 50% | — | — | — |
| Lane Departure | 1 | 50% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2021 Mack Anthem (an) recalls (5)
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.
Electrical system:software; service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/module
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2020-2025 Anthem, Granite, TerraPro and Pinnacle vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop working.
Risk: Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may have diminished or lost functionality, increasing the risk of a crash.
Fix: Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed December 9, 2024. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0472.
Steering
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2021-22 Granite, Anthem, LR, Pinnacle, and Terrapro tractor trailers. The steering gears may have been assembled incorrectly, which can cause the gear to fracture.
Risk: A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.
Fix: Dealers will replace the steering gear, free of charge. Owner notification letters were mailed on July 29, 2022. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0437.
Wheels; wheels:hub
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2021-2022 Anthem, Granite, and Pinnacle vehicles. The hubcap compression spring can cause the hubcap to separate.
Risk: A separated hubcap can create a road hazard, increasing the risk of a crash.
Fix: Dealers will remove the hubcap, free of charge. Owner notification letters were mailed June 30, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0425.
Electronic stability control (esc):control module:software
Problem: Mack Trucks, Inc. (Mack) is recalling certain 2018-2022 Anthem (AN), Granite (GR/GU), and Pinnacle (CHU/CXU/PI) vehicles equipped with "camelback" rear suspension and electronic stability control. The vehicles may not stay in their lane at certain speeds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 136, "Electronic Stability Control Systems on Heavy Vehicles."
Risk: A vehicle that drifts out of its lane increases the risk of a crash.
Fix: Mack will notify owners, and dealers will reprogram the vehicle control units, free of charge. The recall began on April 21, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0423.
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.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
Driver 1 stated: âI was traveling in the right lane and going straight. The other truck was on the right shoulder. I was attempting to merge into the middle lane to provide additional space for the truck on the right shoulder. However, there was another vehicle in the middle lane, so I was unable…
The secondary fuel filter housing broke causing the truck to shut off while driving.
Other Mack Anthem (an) years
← 2020 Anthem (an) · 2022 Anthem (an) →
| Year | Complaints | Recalls |
|---|---|---|
| 2026 Anthem (an) | 0 | 1 |
| 2025 Anthem (an) | 0 | 8 |
| 2024 Anthem (an) | 5 | 6 |
| 2023 Anthem (an) | 0 | 3 |
| 2022 Anthem (an) | 0 | 5 |
| 2021 | 2 | 5 |
| 2020 Anthem (an) | 4 | 6 |
| 2019 Anthem (an) | 1 | 6 |
| 2018 Anthem (an) | 0 | 4 |
See all Mack Anthem (an) 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 Anthem (an)?
Owners most often report back over prevention, fuel/propulsion system, lane departure problems. The top one, back over prevention, accounts for 1 complaint.
Was there a recall on the 2021 Mack Anthem (an)?
Yes, 5 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2021 Mack Anthem (an) a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Anthem (an) model years, the 2021 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.