The worst 2021 Mack LR problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 3
Steering
- What is wrong
- 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.
- Remedy
- 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.
Recall number 22V401000 · Recall details
Steering: hydraulic power assist: pump
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
- Risk
- A loss of power steering assist increases the risk of a crash.
- Remedy
- Dealers will replace the power steering pump, free of charge. Owner notification letters were mailed on December 10, 2021. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0432.
Recall number 21V856000 · Recall details
Service brakes, air
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
- Risk
- Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
- Remedy
- Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0427.
Recall number 21V573000 · Recall details
Technical service bulletins for the 2021 Mack LR 164
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
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Questions about the 2021 Mack LR
Is the 2021 Mack LR reliable?
Owners have filed 0 complaints about the 2021 Mack LR.
What is the most common problem with the 2021 Mack LR?
There are not enough complaints to tell.
How many recalls does the 2021 Mack LR have?
3 recalls, covering steering and service brakes, air.
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