What 22 owners told NHTSA about the 2018 Mercedes-benz GLS

The contact owns a 2018 Mercedes-Benz GLS 550. The contact stated while driving at various speeds, the vehicle made an abnormal clicking sound when making a right turn, and an abnormal ticking sound at startup. There was no warning light illuminated. Another driver informed the contact that the front passenger-side wheel was loose and followed the contact to the residence. The vehicle was taken to a local dealer, where it was diagnosed that the sway bar needed to be replaced; however, the sway bar was only adjusted. The contact stated that the failure had recurred. The dealer was notified and informed the contact that the vehicle was safe to drive. The manufacturer was contacted and advised that any additional repairs would be at the owner's expense. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 75,045.

NHTSA ODI 11748540

When attempting to rise/lower the automatic suspension, the compressor cooling notification pops up, followed by a malfunction. After this occurs, the vehicle is incredibly bumpy, to the point of it being unsafe to drive. The vehicle has been repaired twice already by the dealership under extended warranty and the condition has occurred a third time in less than three weeks. This is our family vehicle, and we cannot drive it due to the risk of shaken baby syndrome for our infant because of how much it bumps. Videos are available to show just how bad it is.

NHTSA ODI 11656041

This 2018 gls 450 has issues with suspension system. Bought this car in 2023 and using since Jna 2023 and suspension system failed like 3 -4 times. Mechanic changed the air compressor , valves and others and still the car has same issue. It used to lift the car to adequate height but the compressor keeps on pushing it to cause teh compressor to fail.

NHTSA ODI 11654511

I TOOK THE CAR TO THE SERVICE 3 TIMES IN 4 MONTHS. THERE ARE MANY PROBLEMS WITH THE CAR. THE FIRST PROBLEM WAS THAT THE LEFT REAR SHOCK WAS LEAKING WHICH MADE A SQUEAKING NOISE WHEN DRIVING. THERE WAS ALSO AN ODOR PROBLEM WITH THE CAR THAT WAS COMING FROM THE VENTILATIONS. THESE TWO PROBLEMS WERE FIXED. I TOOK THE CAR ANOTHER TIME. THERE WAS ANOTHER PROBLEM WITH THE ECO START/STOP FUNCTION AND A PROBLEM WITH THE CAR TRUNK ONLY CLOSING HALFWAY. THE ECO START/STOP FUNCTION WAS FIXED BUT THEY SAID THAT THEY DIDN'T DETECT A PROBLEM WITH THE TRUNK. THE THIRD TIME I TOOK IT TO THE SERVICE I PROVIDED A VIDEO FOR THE TRUNK ONLY CLOSING HALFWAY AND I ALSO HAD ANOTHER PROBLEM WITH THE BLINDSPOT DETECTOR. MY WIFE WAS ALMOST GONG TO GET INTO AN ACCIDENT AS A RESULT OF THE BLIND SPOT NOT SHOWING UP WHEN SHE WAS MOVING TO THE LEFT LANE. I TOOK A VIDEO OF THE BLIND SPOT DETECTOR NOT WORKING PROPERLY. THEY WERE ABLE TO FIX THE CAR TRUNK AND SAID THAT THE BLIND SPOT DETECTOR WAS FIXED, BUT I HAVE NO FAITH IN THE COMPANY BECAUSE I HAVE HAD MANY PROBLEMS WITH THE CAR. THIS IS A NEW CAR THAT WAS MADE IN 2018, AND IT ALREADY HAS HAD MANY PROBLEMS WITH IT IN THE PAST MONTHS. WE CALLED THE MERCEDES MANUFACTURER IN THE US ABOUT THESE PROBLEMS. THEY SAID THAT THEY WILL GET BACK TO ME BUT HAVE NOT SAID ANYTHING. I TRIED CALLING THEM BACK BUT THEY WOULDN'T ANSWER ME. WE TOOK THE CAR FROM A MERCEDES CAR DEALERSHIP. THE ATTACHMENTS ARE COPIES OF THE SUMMARY OF THE THREE SERVICES THAT I WENT TO. THIS IS A NEW CAR AND IT ALREADY HAS THIS MANY PROBLEMS.

NHTSA ODI 11299367