Mercedes-Benz G-Class Complaints

54 consumer complaints on file.

#11774390October 29, 2026
SUSPENSION
My suspension light came on while I was driving and my truch caught fire.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11773912October 27, 2026
ENGINE
My 2017 G550 misfired on a highway and I had total failure with kids in the backseat creating an immediate life-safety hazard. This issue was caused by the M176 engine, which is known to create misfires. Mercedes tried to blame it on me not changing my spark plus, but I showed proof they were changed with a certified Mercedes mechanic. G wagons with that engine should 100% be recalled. They make the vehicle extremely unsafe to drive as it can happen at anytime with ZERO warning. Mercedes still has my vehicle 1 month later and it's not safe to drive.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11768693October 3, 2026
FUEL/PROPULSION SYSTEM
The vehicle has fuel smell coming thru cabin vents. Opening the hood the vehicle also has strong fuel smell in engine bay. The hose supplying the fuel rails is cracked and damaged and does not have any heat sheild to prevent the hose from deteriorating.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11768237October 1, 2026
ELECTRICAL SYSTEM, AIR BAGS, SEAT BELTS
Front Door harness rubs and frays causing the wires to short out. The front windows and door locks work intermittently. SRS failure lights up on dash.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11767053September 25, 2026
SUSPENSION
I was driving on XXX in [XXX] on my way home from picking up my son from [XXX], when I noticed smoke coming from the dash while my suspension light came on. The right side of my car went down. A large amount of smoke started filling the car. I immediately tried to pull over, and as the car slowed, I told my son to get out of the truck and run far away. Once I made a stop, I was able to exit the car as well. I called Mercedes-Benz roadside assistance and the fire department. The fire department came and put out the fire and stated that the dash, console, and driver visor mirror were melted. I had inhaled a lot of smoke because I was the last one out of the car. This has resulted in smoke inhalation, PTSD, and a phobia of driving for both my son and I. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11752544July 23, 2026
UNKNOWN OR OTHER
After I parked my car, I was walking in between another parked car and my vehicle and the tailpipe burnt the back of my left calf. I got out of the driver side. I was driving the car. This is also happened about six months ago to my daughter, who was exiting the car from the backseat and burnt her leg on the tailpipe because the tailpipe of this vehicle is located right under the passenger’s door and sticks out. I uploaded photos of the second-degree burn that I have. It’s blistering now.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11744754June 17, 2026
WHEELS
I received a recall notice for this vehicle stating that the wheels may not be safely attached and could come off back in early May. It's been over a month and Mercedes has no solution for the recall at this time. I'm looking to get help with not having to pay my lease since I cannot use the car safely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11744778June 17, 2026
WHEELS
While driving at around 35mph, the recently-installed rear left snow tire on the car popped off and was propelled several hundred feet down the road. Upon reviewing the recall information of the car, it seems likely the indicent was caused by defective wheel bolts.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11743263June 10, 2026
SEAT BELTS, FORWARD COLLISION AVOIDANCE: WARNINGS, VEHICLE SPEED CONTROL
While driving on a California freeway at highway speed, the vehicle unexpectedly decelerated and the seatbelts tightened as though a collision avoidance or emergency safety system had activated. There was no apparent vehicle, obstacle, or roadway hazard present that would explain the event. The incident occurred while family members, including a child passenger, were in the vehicle. The unexpected deceleration and seatbelt tightening created a significant safety concern because it occurred at freeway speeds without warning. Shortly after the incident, the check engine light illuminated and the vehicle was taken to an authorized Mercedes-Benz dealership for inspection. The dealership documented our complaint that the vehicle slowed on its own and that the seatbelts tightened when no other vehicle was around. The dealership later stated that it was unable to duplicate the concern and reported no fault found. Prior to this event, the vehicle had experienced multiple electronic-related issues, including failure to recognize the key while it was inside the vehicle, repeated "missing key" warnings while driving, and other warning messages requiring dealership diagnosis and software updates. After the freeway incident, the Forward Collision Warning returned, increasing concerns that the vehicle's collision avoidance or driver assistance systems may not be operating correctly. Because of the unexpected freeway deceleration, seatbelt tightening, warning messages, and prior electronic issues, we no longer have confidence in the vehicle's safety and reliability. The cause of the incident remains unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11710210January 11, 2026
ENGINE
On this vehicle the oil pump-oil control valve has malfunctioned. The vehicle has 54000 miles on it and the repair costs $8500. The part is only $300 but the transmission must be removed to repair the vehicle. The safety of people is not compromised by the part. The malfunction has been confirmed by the dealer. The malfunction has been reported to mercedes, the warranty company also. The check engine light came on and notified us there was a problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11701813November 27, 2025
UNKNOWN OR OTHER
I was badly burned by the exhaust when exiting the back left passenger seat.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11695920October 27, 2025
FORWARD COLLISION AVOIDANCE: WARNINGS, UNKNOWN OR OTHER
Mercedes G63 with approx. 3500 miles will suddenly enter into collision avoidance mode. Specifically, the seatbelts will tighten up and the brakes will fully engage to stop the vehicle. In all cases, there was no risk of collision and the system engages with false positive alerts. The console display will indicate the area where the vehicle believed a collision may occur and there is nothing in that vicinity. The risk of injury and bodily harm is significant with this system as the vehicle is uncontrollable and can be rear-ended among other situations. The dealership inspected and confirms fault codes and they updated the vehicle's software but the issue persists. Merecedes should immediately recall all vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11675959July 24, 2025
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
The driver-side door latch on my 2019 Mercedes-Benz G550 is malfunctioning. The door fails to securely close or stay latched, even when shut firmly. This poses a serious safety hazard while driving, as the door may open unexpectedly during motion or remain partially ajar. I have not been involved in any accidents, and the vehicle is well maintained. The issue seems mechanical in nature and affects the structural integrity of the door and its latching mechanism. I contacted an authorized Mercedes-Benz service center and was informed there is no recall. I also contacted Mercedes-Benz USA and am awaiting further response. This is a high-end, relatively new vehicle, and a door latch failure of this kind could lead to injury or worse. I am submitting this complaint to ensure this matter is officially recorded and to urge NHTSA to investigate whether this is a wider defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628117December 1, 2024
UNKNOWN OR OTHER, ELECTRICAL SYSTEM, ENGINE
Kept going in for repairs for the same concerns - nothing was found —- now its a recall on the 2022 model for the same issue that my 2021 model has —- Malfunction in the front/ rear differential lock system malfunction.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607026August 7, 2024
FUEL SYSTEM, GASOLINE
See attached document for complaint
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11605026July 29, 2024
FUEL/PROPULSION SYSTEM
Mercedes refuses to come up with a solution. I have been dealing with this for 8 months now. I asked that they buy the car back since it is a safety concern. I do not feel safe driving it. yet i have to keep paying for the car that sits there? They are not coming up with a solution and i already had this replaced last October when it broke for the first time. i am really upset with owning a car i cannot drive because of safety concerns.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11603796July 22, 2024
FUEL SYSTEM, GASOLINE
The contact owns a 2022 Mercedes-Benz G550. The contact received notification of NHTSA Campaign Number: 23V880000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11600650July 9, 2024
ENGINE
Was driving the vehicle on the street when it turned off without notice. I pressed the gas pedal and noticed the vehicle did not accelerate. The cluster showed “see manual” , a red exclamation ❗️and all the warning lights were illuminated. I had to bring the vehicle to a complete stop in traffic, set it back in Park and had to press the start button 2-3 times before the engine came Back on and quickly shift back in to Drive because I was blocking traffic
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592609June 5, 2024
ELECTRICAL SYSTEM, ENGINE
Shortly after purchasing a new Mercedes Benz 2021 G550 on [XXX], the SUV started having electrical problems. During early 2022 the vehicle shut off while at a red light and would not restart until a few minutes later. No warning light or error message was seen and when taken to the dealership they could not find anything wrong. Several months later the vehicle stopped/stalled almost causing an accident on the highway. This time the dealership did find something wrong and repaired or replaced it. Not sure exactly what it was but they mentioned something electrical Several months after this error messages began to appear on the dashboard and the car would not start. A tow truck had to take it back to the dealership. The vehicle has now been at the dealership for 4 months since February 8, 2024. They tell us they are awaiting parts or some type of harness from Germany . We are requesting more detailed repair reports from the dealership. The car only has 12,000 miles driven. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11591064May 28, 2024
FUEL SYSTEM, GASOLINE
The contact owns a 2022 Mercedes-Benz G63 AMG. The contact received notification of NHTSA Campaign Number: 23V880000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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