*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Steering
Steering wheel will move in and out, but has stopped moving up and down. The steering wheel is stuck in the UP position. This has caused me to readjust all my seat settings and has made it more difficult to see the dash.
Jul 12, 2025Power train › Axle assembly
The contact owns a 2017 Mercedes-Benz S550. The contact stated while the vehicle was in for routine maintenance, the mechanic discovered that the front driver's side CV-boot had cracked and was leaking oil. The contact was advised that the CV-boot could cause the front axle to eventually fail. The contact was advised that the front axle needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 76,000.
Nov 1, 2024 · 76,000 milesExterior lighting › Headlights
This car since new has had moisture in the headlight from rain or washing. MB has installed moisture packets in the headlights that they said would fix the problem. It never did. I called the dealership and complained, they said sorry but that was their fix (MB TSB LI82.10-P-062051). Now the lights have failed, and they want me to spend $10K to replace the headlights and continue with the same issue. The problem still exists with the new headlights. This is not only a poor way to fix an ongoing problem (Moisture packets) for something that is severely related to safety on the highways in America. I believe you will agree. Please respond? Thank you
Nov 21, 2017Air bags
The dashboard is separating where the airbag is on the passenger side and also the driver side which could deploy the airbag
May 5, 2021Fuel/propulsion system
I was sold a vehicle by a dealership with a busted gas tank. It appears to have been an attempt to repair it with patching material. I am unsure if the defect was a result of manufacturing versus acquired damage. My safety is at risk because of leaking gas that could potentially ignite and inhaling strong gas fumes that could impact my lungs and health. The fuel tank damage has been confirmed by a mechanic and documented. It has not been inspected by any other entity while in my possession other than reported inspection by the dealership. I secured the vehicle on [XXX] from the dealership with these safety concerns. A mechanic stated the damage could have resulted either with the dealership…
Feb 14, 2024Engine
B Camshaft position timing over-advanced or system performance Bank1 A Camshaft position timing over-advanced or system performance Bank 2 and Mercedes Benz didn't want to fix this problem and just wanted to change out the engine for 50 thousand dollars. the car is a 2017 w222 Mercedes Benz s550 s Class with a m278 engine.
May 15, 2023Steering
Had my S550 into this dealership two (2) consecutive years for a power steering rack issue that ended up being related to rodent damage. The first time it happened the dealership replaced the wiring free of charge after discovering it, after initially telling me that the rack itself would have to be replaced. This year both the wiring and the rack itself needed to be replaced, and I was made to go through my auto insurance to have it fixed. My sons Cadillac, and my girlfriends Range Rover Sport share the same driveways with me, and have had no rodent damage. I did a bit of research and found that Mercedes now designs their cables with soy based materials, which attract rats, so the fact…
Mar 27, 2023Air bags
The leather is coming out of the dashboard as a result of that the air bag on the passenger front window is coming out. you can literally see the white part of the air bag. its a matter of time before the leather comes out all the way and the air bag will pop out. the dealer refuses to fix it and the car is still under warranty.
Oct 1, 2021
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.