Most common 2025 GMC Hummer EV problems
Share of the 6 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
GMC Hummer EV complaints by model year
What 2025 GMC Hummer EV owners say
Electrical system
While driving on a public road, the vehicle suddenly shut down and rebooted itself. Motive power was lost during the event. This has happened at least a dozen times during normal driving, including while transporting a child. Video of an occurrence was recorded. The vehicle is a 2025 GMC Hummer EV with approximately 10,400 miles and has been in service about eight months. This creates a serious safety risk. A sudden loss of propulsion and system reboot while moving can leave the driver unable to maintain speed or control in traffic and increases the risk of a crash. The vehicle has also had other problems that have been reported to an authorized GMC dealer: a front tire worn to the cords at low mileage, ADAS / Super Cruise and unexpected braking concerns, and water intrusion that has caused electrical failures affecting windows, locks, and mirrors. …
When it rains, within 24 hours, the windows do not automatically move down enough to open the door on command of pulling the door handle. This disallows the ability to close the door back if the door is open, barely underneath the lip of the sky panels. Because of this power loss, the mirrors do not open, the door locks do not work, and the windows do not work. To be able to re-close the doors, the sky panels must be removed and either left off or replaced. Essentially rain leaks into the body where wiring that controls door locks, door windows, causing electrical failure of this circuit only. After some hours of time without intervention function, restores, presumably due to drying out of wet parts.
2025 GMC Hummer EV engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined | Range |
|---|---|---|---|---|
| Electric | Single-speed | AWD | 59 / 47 / 53 MPGe | 318 mi |
EPA ratings. Class: Full-size pickup.
Frequently asked questions
Is the 2025 GMC Hummer EV a good car?
Based on 6 owner complaints filed with NHTSA, the 2025 Hummer EV rates few complaints: 1.6× as many complaints as a typical year of the Hummer EV at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2025 GMC Hummer EV?
The electrical system — 6 complaints, 100% of all complaints for this model year. Next are the transmission & drivetrain (2) and body & structure (1).
How many recalls does the 2025 GMC Hummer EV have?
NHTSA lists no recalls for the 2025 GMC Hummer EV. You can still confirm with your VIN using our VIN recall check.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.