2016 Mercedes-Benz E-Class Structure

I received a letter from Mercedes-Benz USA LLC located at 1 Mercedes-Benz drive Sandy springs Georgia 30328 phone number 800-367-6372. This letter advised me of the extension of warranty coverage on the rear subframe of my vehicle to 20 years with unlimited mileage cover. I call my local Mercedes dealership where I purchased the vehicle to inquire about the severity of this problem. I specifically inquired as to whether this presented a safety concern or not. I was advised that the rear sub frame is the mechanism that holds the rear end of the car to the frame which if deteriorated enough would cause the rear end to separate from the frame resulting in problems with maneuvering the vehicle. Once I was advised of this I requested an appointment to go in and have the rear sub frame inspected to see exactly where the deterioration stands on this vehicle. In my opinion this is a definite safety concern and should have been classified as a recall rather than just a warranty extension. I was granted an appointment to have my subframe inspected tomorrow afternoon for which I specifically requested whether I would be charged or not and was advised I would not. I request that this be looked into by your agency as I do consider this a real safety factor. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Started developing (April 2021) a rattle in car's roof along with occasional metal popping sound coming from rear of car. Continued to get worse. Then rattle stopped for a while and so did the metal popping sound. Now ( August, 2021)it sounds like there is a bolt loose in the sunroof area and the metal popping sound is really loud and I think coming from roof. Most of the time when car body twist, like going up a slight incline at an angle when entering a parking lot this incredible loud popping sound resonates throughout the entire car body. Played around on Mercedes website and it appears that Mercedes has problems with sunroof bolts coming loose. This is a safety defect -- if sunroof comes lose at 70 mph it is going to fly off and hurt or kill someone. Also strength of roof is compromised and if have accident where roof protection is needed it will probably fail.

PANORAMIC ROOF MAKING NOISE. UPON DEALER TROUBLESHOOTING WAS INFORMED PANORAMIC ROOF WELD OR HARDWARE IS AFFECTED. CAR ONLY HAS 35000 MILES AND CAR WAS ABOUT WEEK PAST THE 5 YEAR MANUFACTURE WARRANTY. I WAS INFORMED DEALER WOULD HAVE TO REPLACE THE PANORAMIC SUNROOF AND COST WILL BE AROUND $8500.00 ISSUE IS NOTICED WHEN CAR IS DRIVEN AND NOISE GETS LOUDER AND FREQUENT WITH HIGH TEMP OUTSIDE. *TR

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ E400. THE CONTACT STATED THAT THE PANEL BETWEEN THE SUN ROOF AND WINDSHIELD SHATTERED WHILE BEING COVERED. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHERE THE ISSUE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 1,200.