2026 Mercedes-Benz E 350 4MATIC Owner Complaints

Mercedes-Benz E350 Mild Hybrid was purchased new on XXX. Vehicle had approximately 291 miles and had been owned 25 days, when incident occurred on XXX at approximately 9:30am. Incident occurred during normal interstate driving (I-10 between [XXX] and [XXX]) at approximately the posted speed limit of 60mph. Weather was partly cloudy, not raining. A sudden loud explosive sound occurred, similar to a gunshot. There were no warning lamps, messages, or other symptoms prior to the explosive sound. Neither of 2 occupants in vehicle observed an object strike the vehicle. Sunroof was completely closed at time of incident. Passenger opened inside cover of sun roof and immediately observed shattered panoramic roof glass, with almost half of the sunroof gone. Remainder of sunroof was cracked into very small fragments. Glass appeared to largely disperse outward; interior sunshade prevented glass from entering the passenger compartment, although there were shards of glass lying within the sunshade. Vehicle was safely removed from traffic. No injuries occurred. But half of glass from sunroof was scattered toward other lanes of busy interstate traffic. Passenger safety could've been compromised had the glass torn the soft fabric sunshade. Passenger safety could've been compromised if driver had been distracted by the explosive sound. Glass could've been safety hazard for other vehicles behind mine. Mercedes-Benz denied warranty coverage and refused to provide owner a written engineering explanation of the cause of the accident. Mercedes-Benz field technical rep and dealer service department reviewed the car's damages. Vehicle has since been repaired at owner's expense. Owner has photos of damaged roof prior to repair. Owner plans to sell vehicle on or about XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11750962

Incident

Jun 10, 2026

1. Car's computer abruptly shutdown all controls/systems when lightly applying brake to stop at yellow light. Lost Total control of car, steering locked, 4 wheel drive locked all wheels, park brake inoperable, doors locked, windows would not operate, key fob was made inoperable, HVAC was inoperable, no lights worked except for Emerg flashers, wipers activated and went erratic, multiple alarms went off saying what Not to do but gave No advice on "What to do", MB SOS made inoperable. see MB Inv 379224 they determined it was EZS control module. BUT MB gave no diagnostics why the car left driver with control of nothing. 2. My safety was put at high risk. Why? I manually opened driver door, it closed itself car on a slight inclined Rd, manually opened trunk to warn others, returned to car and all doors are locked, plus all retractable handles flush with door body manual key useless. Due to perfect weather day, passenger window down 3in allowing to insert arm to unlatch door manually. Car was in lane 2 of 3 lane traffic light intersection. Very busy major road accessing a 6 lane US Hwy. Luckily Police arrived on their way to work, stressed very dangerous location, stayed until car towed away. 3. MB dealer returned car. Will not confirm they will do a root-cause analysis of the total loss of control when one item (EZS) fails and leaves driver totally unsafe. There must be a software malfunction.....too many alarms. MB cannot assure this E350 or (any other one) will not have this type of shutdown again leaving the driver Unsafe. Reading MB car safety policy this dealer and MB USA Georgia do not comply with the policy. Concerns over Driver safety remain very high despite the replaced EZS, software was not diagnosed 4. Dealer stated on Jun 26, the failed EZS is yet to be analyzed and gave no timeline to do so. I gave 26 days for dealer to comply with MB policy. It is not forthcoming 5. Absolutely No warning lamps, alarms or any operational symptoms prior to total shutdown

NHTSA ID

11747174

Incident

May 31, 2026

The contact owns a 2026 Mercedes-Benz. The contact stated that while driving at various speeds, an SRS warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed as having an electrical issue that needed an SRS replacement. The vehicle was repaired; however, the failure reoccurred. The manufacturer was made aware of the failure. The failure mileage was approximately 32,000.

NHTSA ID

11740420

Incident

May 6, 2026

Mileage

32,000 mi

Restraint system malfunction service required light displayed on dashboard while driving. Vehicle was purchased January 10, 2026. Mercedes Benz E350 4 matic sedan. Safety concerns for operator and public.

NHTSA ID

11737375

Incident

May 3, 2026