Sedan, gasoline, built in Germany. Owner complaints on file from Dec 8, 2017 to Jan 22, 2025.
Owner complaints about this model year, by the year they were filed with NHTSA.
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 21V-197 | Mar 19, 2021 | Front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair | Structure | 15,096 | Repair or modification |
| 21V-072 | Feb 12, 2021 | On June 18, 2021, an additional 9 vehicles were added, including certain 2021 GLA250, GLC300, 2018 S450, E400, and 2017 CLA250 vehicles | Communication | 67 | Inspection |
| 21V-058 | Feb 5, 2021 | Software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the… | Communication | 1,292,258 | Software update |
| 19V-915 | Dec 20, 2019 | These vehicles may be equipped with front brake components (brake discs, calipers, and pads) with different dimensions than specified for the vehicle | Brakes | 75 | Part replacement |
| 18V-910 | Dec 19, 2018 | Hands-off-Detection system may malfunction, causing the Active Steering Assist system to remain engaged despite the driver's hands not being on… | Driver assistance | 6,200 | Software update |
| 18V-908 | Dec 19, 2018 | Due to an incorrect steering boot installation, the Active Steering Assist system may remain engaged despite the driver's hands not being on the… | Driver assistance | 5,754 | Repair or modification |
| 18V-407 | Jun 15, 2018 | Electrical power bars inside the pre-fuse box in the trunk may not have been secured properly | Electrical system | 1,701 | Part replacement |
| 17V-816 | Dec 18, 2017 | Rear passenger door on the driver side may indicate that it is locked, when it may not be | Latches and locks | 8,700 | Part replacement |
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
7 complaints on file, page 1 of 1.
The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the gear shifter independently shifted into neutral. The contact had to hold down the gear shifter for about 30 seconds before the system was reset. Additionally, the check engine warning light was later illuminated. The vehicle was taken to the dealer where it was diagnosed with transmission valve body failure. The contact was informed that the transmission valve body needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000.
NHTSA complaint 11637720I was driving on highway on 7/26 Friday in exit lane when my panoramic sunroof exploded and shattered on me while driving. It sounded like a shogun. Some of the glass came in on me and other part flew out vehicle causing paint damage. I inspected car there was no impact from anything (ie rock, branch etc). It was a clear sunny dry day no vehicles in front that would have kicked up an object no impact whatsoever. I made to my house 3 miles away and there is no impact after inspection i have insurance adjuster coming Monday 7/29. I checked internet and have heard of others stating same experience. I looked at NHTSA site and my car doesn’t look like it was part of a national recall notice. Very frightening situation a more inexperienced driver may have not handled the situation.
NHTSA complaint 11604856Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with other vehicles, once I made it to a safe location I shut the vehicle off and restarted after 15 minutes and it seem drivable again but left me extremely concerned as I am 500 miles away from with no dealerships open to have it looked since is Memorial Day.
NHTSA complaint 11524278The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the contact attempted to depress the brake; however, the vehicle failed to decelerate and slow as needed. The contact stated that the brakes failed to work as needed. The contact stated that the “Service Required” message was displayed on the instrument panel. The vehicle was taken to a dealer and was diagnosed with electronic parking brake failure. The manufacture was not notified of the failure. The failure mileage was approximately 40,000.
NHTSA complaint 11509829I’m reporting this safety concern and seeking advisement from those more knowledgeable than myself on this issue. Recently, as I attempted to actuate the brake of my vehicle. My right foot was entangled with the brake pedal as I moved it from the acceleration pedal to the brake pedal in observance of a “Stop Sign.” I barely avoided what surely would have been a catastrophic collision with another vehicle. The incident occurred in a split second. The shoe of my right foot was entangled with the lower right corner of the underside of the brake pedal, which has a protruding sharp thin metal edge. The sharp thin metal edge impeded the performance my right leg as it dug into my shoe’s sole edge and the leather upper. In my opinion the sharp thin metal edge of the underside of the brake pedal as described herein is a dangerous and extremely problematic issue. After the recent incident, I am consumed with concern, trepidation and fear when operating the vehicle. During the excitement of the near collision, my wife made an audible gasp, and in the split second I struggled to free my shoe and foot to avoid a potentially fatal crash. I barely freed my foot and shoe in time enough to successfully bring my vehicle to a halt. My wife and I narrowly averted a life changing, potentially deadly accident.
NHTSA complaint 11509192TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ S450. WHILE DRIVING 75 MPH WITH THE CRUISE CONTROL ENGAGED, THE AUTOMATIC BRAKING ACTIVATED ON ITS OWN IN TRAFFIC. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL TO DISENGAGE THE CRUISE CONTROL IN ORDER TO DRIVE SAFELY. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ALEXANDRIA (200 S PICKETT ST, ALEXANDRIA, VA 22304, (703) 341-2100) TO BE DIAGNOSED, BUT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 49,826.
NHTSA complaint 11217774THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.
NHTSA complaint 11053437Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.