- The problem
- Mack Trucks, Inc. (Mack) is recalling certain 2010-2018 MRU and 2019-2025 Terrapro towing vehicles. The vehicles are missing the anti-lock brake (ABS) warning light and circuitry that controls the anti-lock brake function for an attached trailer. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
- The risk
- Driving without a functioning anti-lock brake system may result in the trailer not braking as intended, increasing the risk of a crash.
- The fix
- Dealers will add an ABS warning light and circuitry, free of charge. Owner notification letters were mailed April 28, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0474.
Vehicle safety record
2018 Mack Mru Problems, complaints & recalls
Owners have filed 1 complaint about the 2018 Mack Mru with NHTSA, most often about the wheels & tires (1). It is covered by 1 recall, the latest in January 2025 for the antilock. For comparison, the 2017 has 0.
NHTSA data checked
BFewer problems than a typical Mru year, for its age
#365 most complained-about 2018 vehicle
- Complaints
- 1
- Recalls
- 1
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Most common 2018 Mack Mru problems
Share of all 1 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.
2018 Mack Mru recalls 1
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
What owners say
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1 complaints about the 2018 Mack Mru
Newest first, as filed with NHTSA by owners.
2018 Mack gru with 40k has two cracked front wheels made by alcoa. We have 10 other trucks 2012 to 2019 with same wheels and no cracks. After little research on the internet it is obvious many other people are having this problem on buses, rvs, and trucks. Strange we would have 2 on same truck and no others. It is easy to assume the aluminum alloy is not right. Very dangerous!!!! Pictures attached, you are welcome to wheels, not looking for anything, just giving information
Mack Mru: every year compared
All Mru years2018 Mack Mru vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 2018 Mack Mru | 1 | 1 | B | |
| 2018 Mack GU | 1 | 0 | A | Compare |
| 2018 Mack Granite (GU) | 1 | 4 | C | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 2018 Mack Mru
Does the 2018 Mack Mru have any recalls?
Yes - NHTSA lists 1 recall for the 2018 Mack Mru: antilock (January 2025). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
What are the most common problems with the 2018 Mack Mru?
By the complaints owners filed with NHTSA, the most common problem areas are the wheels & tires (1).
How many complaints has the 2018 Mack Mru had?
1 complaints have been filed with NHTSA, the first on October 6, 2020 and the latest on October 6, 2020. Of these, 0 describe a crash and 0 a fire, and together they report 0 injuries and 0 deaths.
Is the 2018 Mack Mru a reliable vehicle?
Its Safety Index is 61 out of 100 (grade B: fewer problems than a typical Mack Mru year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 2018 Mack Mru has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data