There are 2 stored owner reports matching the steering leading-label group for the 2023 Mercedes-Benz GLC-Class in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)This 2023 GLC, a newly redesigned model, has a number of issues. The two most severe are the adaptive speed limit and the lane keeping assist. I had to disable the traffic sign recognition feature because I was on I-95 in Maryland where the posted speed limit was 65. The car abruptly slowed me down to 35 because it saw an exit sign speed limit but I was not on the exit. I was lucky the car behind me didn't hit me. A warning would be good but to brake the vehicle for a speed limit sign seems problematic. The more serious issue is the lane keeping assist. The car is supposed to show green markers when I'm above 37MPH and on a marked road. Normally, one turns red and eases the car back into the lane if I drift. There are 3 settings and mine is set to provide the most warning. If the system works (it sometimes does) I am already on the line at the alert. Typically, it could care less where I am in relation to road markings and will let me drift across lanes with no warning whatsoever. I took the car in to the dealership several times for this. The first time, they said "it's designed so you can't trick it." I didn't buy that. I then took it our for a drive with the service manager. He said "it detected steering input". I then let it drift across the road marking while removing my hands from the wheel and it provided no warning whatsoever (no turn signal use to disable the function). I asked him if he saw steering input that time. He said "I need a video of this". This issue has supposedly been sent to the engineers in Germany but this problem existed when new and it's been weeks with no resolution. This is a backup system but it is something I certainly paid for and would like to know it works should I actually need it. All testing was done in a safe manner and not around traffic. I can only attach pictures but I have videos as well. The dash should not be showing green lane markings on both sides in any of these screenshots from videos.
Loss of propulsion at highway speeds with subsequent failure of digital light system at night resulting in injury crash
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.