Home · 2020 Mercedes-benz GLE · Complaints

What 122 owners told NHTSA about the 2020 Mercedes-benz GLE

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (122)Crash / fire / injury (4)Engine (43)Electrical system (37)Speed control (15)Transmission & drivetrain (9)Driver assistance (8)Brakes (7)Fuel system (7)Backup camera & sensors (5)Lane Departure (5)Visibility & wipers (5)

5 of 122 complaints match · Lane Departure · clear filters

Dec 29, 2025Electrical systemLane Departure

My 2020 GLE 350 first displayed a problem with left indicator on front left hand head lamp. I took an appointment with my Mercedes dealer for repair. Then it started showing all kinds of safety problems on the screen -like blind spot monitoring, collision warning etc not working. I parked it in my garage, shut off the engine, locked it and in a couple minutes, it started a blower like sound. I called Mercedes service center and described the problem. They sent a tow truck. While waiting for tow truck, the blower would automatically start every 3 to 4 minutes in a standing, switched off car which can be very dangerous. After diagnostics the authorized service center found the root cause to be a worn out seal which let condensation in the lamp assembly and the water entered in the electrical module. I have taken up the issue with Mercedes corporate. While they are investigating, I wanted to file this complaint so that if there are similar complaints in this model, it may be a manufacturing defect that needs a recall to fix the bad sealing

NHTSA ODI 11707529

Oct 25, 2025Electrical systemLane Departure

Wire harness need to be replaces car is under 100k miles and the same issue has been recalled cla250 gla models with the same engine. Current model GLE is not under recall but has the same issue with the electrical issue “oil pump vavle connector fault” which cause engine light .

NHTSA ODI 11695606

Aug 24, 2023Lane Departure

After driving for 2 1/1 hours,we changed drivers and shortly there after lane assist, blind spot and active brake assist limited warnings come on along with engine decellerating from 70 mph with no acceleration allowed-had to pull off busy freeway(4 lanes), cut off engine and restart. Everything working fine until about 20 minutes later exact thing happened as well as 2 more times. Parked for night and exact thing happened after about 2 1/2 hours into trip. Very dangerous fighting traffic struggling to get to place to pull over and reset . MB dealership cannot find anything wrong- Safety issue to drive again not knowing if/when it might happen again

NHTSA ODI 11540575

Nov 30, 2021Driver assistanceLane Departure

While driving the car in "assist" mode I will get a warning that all assist devices are inoperable. This is not always apparent while driving until I notice the adaptive cruise control and lane assist are not responding. Obviously a safety risk. I have talked to the dealership and they cannot find a problem. I contacted Mercedes headquarters and they responded with a customer service rep that began the conversation that he has no technical knowledge of the car (obviously not a big help). I told them I would complete a report to the NHTSA and he seemed very unconcerned. I have not seen a relationship between the "assist" becoming inoperable and anything else in the car or the driving conditions. All incidents so far (about five) have been on clear days or evenings on the freeway with no precipitation nor water on the road.

NHTSA ODI 11442181

Nov 28, 2020Speed controlDriver assistanceLane Departure

I WAS TRAVELLING ON HIGHWAY WITH ADAPTIVE CRUISE CONTROL ON. WHEN NEAR THE EXIT, I PRESS THE OFF BUTTON FOR THE CRUISE CONTROL. TO MY SURPRISE, THE CAR DIDN'T SLOW DOWN, AND INSTEAD MAINTAIN THE ENGINE POWER TO KEEP THE CAR IN SET SPEED. I TRIED THE OTHER SETTINGS (OFF, CANCEL, SPEED DOWN) OPTION BUT NOTHING IS RESPONSIVE. SINCE I AM ON THE OFF RAMP ALREADY, I HAVE TO STEP ON THE BRAKE (THIS DOES FINALLY STOP THE CRUISE CONTROL) TO SLOW DOWN THE CAR. AFTER I COME TO A STOP AT THE STOP LIGHT, I NOTICE THAT THE AR VIEW CAMERA HAS A CONDENSATION IN THE CENTER OF THE CAMERA LENS (SEE FIRST PICTURE WITH 11/10 DATE). AT THE SAME TIME, MULTIPLE WARNING MESSAGE APPEAR ON DASH, INCLUDING "ADAPTIVE CRUISE CONTROL INOPERATIVE", "ACTIVE LANE KEEP ASSIST INOPERATIVE", AND A FEW OTHERS. THE CRUISE CONTROL INDICATOR REMAIN ON AND ACTIVE ON THE DASH (BUT SYSTEM ISN'T WORKING) UNTIL I GOT TO A SAFE LOCATION TO RESTART THE CAR. ALL ERROR MESSAGE WAS CLEARED AFTERWARD. A FEW DAYS LATER (11/16), I HAD THE CAR AT THE DEALER FOR INSPECTION. I MENTIONED THE ISSUE BUT THEY SAID THEY ARE UNABLE TO FIND ANYTHING WRONG AND CAMERA LENS WAS CLEARED AT THAT TIME. AFTER I GOT HOME, I NOTICE THERE ARE CONDENSATION AGAIN ON THE CAMERA LENS (SEE SECTION PICTURE WITH 11/16 DATE).

NHTSA ODI 11376864

Working with the data? Download all 122 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Mercedes-benz GLE verdict →