{"source":"NHTSA vehicle owner complaint","officialApiUrl":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11538722","retrievedAt":"2026-11-05T04:25:37.189Z","count":1,"results":[{"odiNumber":11538722,"manufacturer":"Mercedes-Benz USA, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/16/2023","dateComplaintFiled":"08/15/2023","vin":"W1NKM4HB2PF","components":"STEERING,ELECTRICAL SYSTEM,LANE DEPARTURE","summary":"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.","products":[{"type":"Vehicle","productYear":"2023","productMake":"MERCEDES-BENZ","productModel":"GLC300","manufacturer":"Mercedes-Benz USA, LLC"}]}]}