Total Complaints
3 filings
MACK GU · model year
2018 MACK GU
3 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2018MACKGU carries 3 consumer safety complaints 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 GU is electrical system with 1 filings, followed by exterior lighting (1) and visibility/wiper (1). 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.
NHTSA currently has 5 investigation files overlapping the 2018 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.
3
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 |
|---|---|
| ELECTRICAL SYSTEM | 1 |
| EXTERIOR LIGHTING | 1 |
| VISIBILITY/WIPER | 1 |
Recent Complaints
20220415ELECTRICAL SYSTEM
Wipers do not work and the tractor lights turn off ALL of the lights the trailer lights go out as well the fuse for these electrical components gets very hot, this makes it very dangerous when driving at night and when it's raining. The driver has to pull over till he can get the lights to come back on
20220415EXTERIOR LIGHTING
Wipers do not work and the tractor lights turn off ALL of the lights the trailer lights go out as well the fuse for these electrical components gets very hot, this makes it very dangerous when driving at night and when it's raining. The driver has to pull over till he can get the lights to come back on
20220415VISIBILITY/WIPER
Wipers do not work and the tractor lights turn off ALL of the lights the trailer lights go out as well the fuse for these electrical components gets very hot, this makes it very dangerous when driving at night and when it's raining. The driver has to pull over till he can get the lights to come back on
Compare 2018MACKGU 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 GU have?▼
The 2018 MACK GU has 3 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2018 MACK GU?▼
The most-complained component for the 2018 MACK GU is ELECTRICAL SYSTEM with 1 complaints. Other frequently reported areas include EXTERIOR LIGHTING and VISIBILITY/WIPER.
Is the 2018 MACK 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.