2025 GMC Hummer EV SUV Owner Complaints
Complaint Summary
The 2025 GMC Hummer EV SUV has 7 reported complaints.
- Top issues involve electrical system and engine.
Powertrain: Battery Electric (BEV).
Reliability Score
Reliability Score
Based on 7 complaints
Most Frequent Issues
ELECTRICAL SYSTEM
2 28.6%
ENGINE
1 14.3%
FUEL/PROPULSION SYSTEM
1 14.3%
SEAT BELTS
1 14.3%
FORWARD COLLISION AVOIDANCE
1 14.3%
Quick Insights
The top category is ELECTRICAL SYSTEM, accounting for 28.6% of all complaints.
Owners have reported issues across 6 distinct vehicle systems.
Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.
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What owners keep reporting on the 2025 GMC Hummer EV SUV
The 2025 GMC Hummer EV SUV has 7 owner complaints in this dataset. ELECTRICAL SYSTEM is the most common complaint category, representing about 29% of the reports shown here.
Most common complaint categories
The top complaint groups for the 2025 GMC Hummer EV SUV are ELECTRICAL SYSTEM (2), ENGINE (1), FUEL/PROPULSION SYSTEM (1).
Are these complaints a serious red flag?
Potentially. 4 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.
What should buyers inspect on a used 2025 GMC Hummer EV SUV?
Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.
Detailed Complaint Log
Showing 6 of 6 systems
ELECTRICAL SYSTEM
2 Reports29% of totalPreviewing the first 2 complaint summaries.
A little over a month after purchasing my brand new Hummer EV 2X I was driving and then I lost all power, brakes, steering, and had to coas t to a stop. My rear motor blew and snapped my trans axle. I had only 2,000 miles on the odo. This vehicle is riddled with issues that limit its ability to use safely.
4/2/2025
The contact owns a 2025 GMC Hummer EV. The contact stated that while the vehicle was stationary, the brake pedal was depressed, and several unknown warning lights illuminated. The contact stated that while the vehicle was idling for several minutes, several unknown warning lights illuminated. The vehicle was then taken to a dealer where it was inspected by an engineer who stated that the system was extremely sensitive, and the dealer stated there was no additional assistance that could be provided. The vehicle was not repaired. The contact stated that while driving at an undisclosed speed on another occasion, several unknown warning lights illuminated. The contact was informed the system was extremely sensitive and the issue would reoccur. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 2,300.
4/16/2025
ENGINE
1 Report14% of totalPreviewing the first 1 complaint summaries.
A little over a month after purchasing my brand new Hummer EV 2X I was driving and then I lost all power, brakes, steering, and had to coas t to a stop. My rear motor blew and snapped my trans axle. I had only 2,000 miles on the odo. This vehicle is riddled with issues that limit its ability to use safely.
4/2/2025
FUEL/PROPULSION SYSTEM
1 Report14% of totalPreviewing the first 1 complaint summaries.
A little over a month after purchasing my brand new Hummer EV 2X I was driving and then I lost all power, brakes, steering, and had to coas t to a stop. My rear motor blew and snapped my trans axle. I had only 2,000 miles on the odo. This vehicle is riddled with issues that limit its ability to use safely.
4/2/2025
SEAT BELTS
1 Report14% of totalPreviewing the first 1 complaint summaries.
On [XXX], my [XXX] son was riding in the back seat of our 2025 GMC Hummer EV (VIN: [XXX] ) and reported his seatbelt felt loose. I pulled over and discovered the seatbelt bracket was completely detached from the vehicle frame. The bolt was present, but the nut that secures the bracket was entirely missing, leaving the belt nonfunctional and my child at risk of serious injury or death in the event of a collision. This is a catastrophic failure of a federally regulated safety system. I immediately contacted GMC and the dealership, explained the issue, and stated the vehicle was unsafe to drive. Despite this, I was told to drive the vehicle in for service on 6/9. The dealership confirmed the nut was never installed during manufacturing. However, instead of repairing the defect properly using OEM hardware and torque specs, the dealer used a generic lock nut found in their shop and said it âshould hold.â No engineer signed off on the repair. There were no warning lights or messages. The issue became apparent only after my son noticed the looseness. The vehicle also has other documented issues: mirror folding failure, seat cushion defect, hydraulic frunk failure, swing gate malfunction (fixed), and a squeaky rear door. All were diagnosed on 2/28/25 and parts were ordered. I received no follow-up. When I returned on 6/9, nothing else was repaired. The advisor said the original technician had left and the new one couldnât proceed. I also own a second 2025 Hummer EV (VIN: [XXX] ) and am now concerned about its integrity. This experience has caused ongoing emotional distress. GMCâs failure to inspect, respond, or properly repair a critical seatbelt defect demands NHTSA investigation and possible recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
6/11/2025
FORWARD COLLISION AVOIDANCE
1 Report14% of totalPreviewing the first 1 complaint summaries.
The contact owns a 2025 GMC Hummer EV. The contact stated while driving at an undisclosed speed, the message "Forward Collision Avoidance System Unavailable" was displayed. The contact stated while another vehicle pulled in front of the contact's vehicle, the forward collision avoidance system and the side-view sensors safety features failed to engage. The vehicle was taken to the dealer, but was not diagnosed due to a schedule error. The diagnostic testing appointment was rescheduled for a later date. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.
7/30/2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
1 Report14% of totalPreviewing the first 1 complaint summaries.
The super cruise self driving system is entirely defective and faulty, this is a safety issue.
8/25/2025
Data and Methodology
Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.
What are the most common owner complaints for the 2025 GMC Hummer EV SUV?
Are complaints about the 2025 GMC Hummer EV SUV a serious warning sign?
How should buyers use complaint data for the 2025 GMC Hummer EV SUV?
Are complaints about the 2025 GMC Hummer EV SUV severe?
Complaint list entries are sourced from owner-submitted NHTSA ODI records.
GMC Hummer EV SUV: How should complaint data influence buying decisions?
Carfocal links complaint data directly to recall and maintenance routes for the same model year.
- Complaint entries
- 7
- Top-topic view
- 5 grouped topics shown
- Primary source
- NHTSA ODI owner complaint records
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