I am reporting a serious safety issue with my 2023 Mercedes-Benz EQS SUV. On multiple occasions, the vehicle has suddenly lost power and completely stopped while driving on the freeway without warning. During these incidents, a red warning symbol appeared on the dashboard (a red turtle icon), indicating a critical malfunction. These failures created extremely dangerous situations, as the vehicle lost the ability to maintain normal driving speed in active freeway traffic. At the time of these incidents, my three children were in the vehicle, which significantly increased the risk of a serious accident. This issue has occurred multiple times, suggesting a serious and recurring defect. The sudden loss of power combined with dashboard warning signals presents a major safety hazard and could lead to severe injury or fatal accidents. I no longer feel safe operating this vehicle and request that this issue be investigated as a potential safety defect.

Source: NHTSA complaint ODI #11725988 · view all complaints for this vehicle at nhtsa.gov

While making a left turn at low speed, I applied the brakes, but the vehicle did not respond as expected and instead appeared to drift, surge, or accelerate forward. The vehicle struck a fire hydrant and a bus stop pole before crashing into a tree. Airbags deployed and both occupants sustained injuries. I suspect a possible malfunction involving braking, propulsion, electrical, or speed control systems. No final cause has been determined. The vehicle should still be available for inspection. Mercedes-Benz USA has opened a case regarding this incident.

Source: NHTSA complaint ODI #11731921 · view all complaints for this vehicle at nhtsa.gov

Two weeks ago, I returned back from work and later on in the evening was driving to go to grocery store when the car seemed to get pulled to one side and started shaking when driving around 40MPH. Not knowing what was going on, I turned back and slowly drove it back home. Next morning, I thought may be there is low tire pressure ( even though it was in range), I slowly drove to get air filled. After that coming home the car started pulling on the left side and shaking around 40MPH speed. So I slowly drove it back home with flashers on and then towed it to the dealership not knowing what was going with it. Car has only 6700 miles on it. Dealership looked at it and said that the left rear strut was broken and right rear strut is damaged. No other damage to the car. They think I might have drove over 'some object'. I have the same drive to work for 10 years, I drive about 2 to 3 times a week to work. There is no major trenches or big bumps on the road. Majority of drive is freeway driving of about 25 miles plus. This is brand new luxury vehicle, and I would know if I drove over some thing so big to cause such a major damage. At no point I drove over any thing major - otherwise I would not have thought of 'tire problem' initially. I am really shocked that driving for 40 years, I have never encountered such an issue. My concern is that the car is so smooth driving that it had such a major damage without driving over any large potholes etc. Not sure if other Mercedes EQS has had similar issues. Dealership states that this is not covered under warranty. I just want to make sure that there is no significant manufacturers defect in these parts to cause such a mjaor damage to the struts without any other damage to the underside of the car. I am glad that I did not get into any major accident but dealing with such breakage of car part is beyond my understanding of how such a thing can happen without one realizing that it had happened. Thank you for your attention

Source: NHTSA complaint ODI #11618816 · view all complaints for this vehicle at nhtsa.gov

The vehicle has experienced recurring intermittent failures of Active Brake Assist and Active Blind Spot Assist. The systems may function normally and then unexpectedly become unavailable, with warning messages appearing in the vehicle. The primary driver was nearly involved in an accident during one occurrence when Active Brake Assist unexpectedly became unavailable. No collision occurred, but the loss of the braking-assistance function created a serious safety concern. The problem has been inspected by authorized Mercedes-Benz dealers on multiple occasions. During an April 2026 dealer visit, the dealer documented both the Blind Spot and Active Brake Assist warnings, stored communication fault codes involving the front radar sensor/DISTRONIC, a bent front radar sensor bracket, and a loose front grille. The problem later recurred, and the vehicle was returned to a Mercedes-Benz dealer on August 27, 2026. The vehicle remains at the dealership and is available for inspection. The dealer now states that the front radar/module mounting bracket is cracked and attributes the condition to outside impact. The vehicle has never been in an accident and there is no visible damage to the front emblem or exterior front of the vehicle. When asked how the dealer determined that an impact caused the bracket damage, the owner was told that the DTC report supported that conclusion, but the dealer declined to provide a copy of the report. During the same discussion, a Mercedes-Benz service consultant stated that the bracket is very flimsy and can crack from something as minor as leaning on the vehicle. This raises concern that the mounting bracket for a safety-related radar system may be unusually susceptible to damage during ordinary use. The recurring failures affect systems related to collision warning, automatic braking assistance, and blind spot detection. The vehicle and affected components remain with the Mercedes-Benz dealer and should be available for inspection.

Source: NHTSA complaint ODI #11763096 · view all complaints for this vehicle at nhtsa.gov