Total Complaints
1 filings
MACK GRANITE (GU) · model year
2018 MACK GRANITE (GU)
1 NHTSA complaints, and 4 active recalls for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2018MACKGRANITE (GU) carries 1 consumer safety complaint in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2018 GRANITE (GU) is suspension with 1 filings. Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability. This model year has 4 active recall campaigns, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.
NHTSA currently has 5 investigation files overlapping the 2018 GRANITE (GU). Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
1
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| SUSPENSION | 1 |
Recalls (4)
23V60000025/08/2023
EXTERIOR LIGHTING:TURN SIGNAL
Mack Trucks, Inc. (Mack) is recalling certain 2015-2023 GU and GR vehicles. The turn signals may be positioned incorrectly, reducing their visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and A
24V77300018/10/2024
TIRES
Mack Trucks, Inc. (Mack) is recalling certain 2019-2025 GR and 2018 GU Granite vehicles equipped with non-DOT tested tires. The tires may not have been DOT tested and confirmed to be sufficient for the vehicles. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle
18V15200006/03/2018
VISIBILITY:WINDSHIELD WIPER/WASHER
Mack Trucks, Inc. (Mack) is recalling certain 2018 Anthem (AN), Granite (GU), and Pinnacle (CXU, PI) trucks. An electrical overload condition may cause the light control module (LCM) to fail, resulting in the loss of the exterior lighting, interior dashboard lighting, and the windshield wipers.
21V23300001/04/2021
ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE
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 wit
Recent Complaints
20201105SUSPENSION
THE "U"BOLTS THAT ATTACH THE DRIVE AXLES TO THE SUSPENSION APPEAR TO BE FAULTY. WE'VE HAD TWO BREAK ON TWO SPATE OCCASIONS IN LESS THAN A WEEK. BOTH TIMES THE TRUCK WAS LOADED WITH APPROXIMATELY 79000 LBS, WE DON'T RUN OVER WEIGHT, AND DRIVING. FIRST TIME WAS LEFT REAR DRIVE AXLE AND THE SECOND WAS ON THE RIGHT SIDE OF THE FORWARD DRIVE AXLE. WHEN PURCHASING NEW U BOLTS THE PARTS GUY MENTIONED THAT THEY'VE BEEN SELLING A LOT OF THEM SINCE THE WEATHER TURNED COLD. LUCKILY MY DRIVERS ARE VERY AWARE AND STOPPED AS SOON AS IT HAPPENED. I CAN ONLY IMAGINE WHAT WOULD HAPPEN IF AN AXLE BROKE LOOSE AT 65 MPH WITH A FULL LOAD ON THE TRUCK
Mileage: 250,000
Compare 2018MACKGRANITE (GU) to Similar Vehicles
NHTSA Investigations
PE20005Preliminary EvaluationClosed
mDrive Transmission Failure to Disengage
PE20003Preliminary EvaluationClosed
Vehicle Roll Away
PE10042Preliminary EvaluationClosed
Failing 5th wheel attachment bolts
PE08069Preliminary EvaluationClosed
AIR COMPRESSOR DISCHARGE LINE
PE02094Preliminary EvaluationClosed
INTEGRAL HUB AND BEARING ASSEMBLY
Frequently Asked Questions
How many complaints does the 2018 MACK GRANITE (GU) have?▼
The 2018 MACK GRANITE (GU) has 1 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
Are there any recalls for the 2018 MACK GRANITE (GU)?▼
Yes, the 2018 MACK GRANITE (GU) has 4 recall(s). The most common affected component is EXTERIOR LIGHTING:TURN SIGNAL. Recalls are issued by NHTSA and manufacturers must provide a free remedy.
What are the most common problems with the 2018 MACK GRANITE (GU)?▼
The most-complained component for the 2018 MACK GRANITE (GU) is SUSPENSION with 1 complaints. Other frequently reported areas include various components.
Is the 2018 MACK GRANITE (GU) safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.