2017 Mercedes-Benz GLC Owner Complaints

Airbag front message

NHTSA ID

11697823

Incident

Nov 5, 2025

The contact owns a 2017 Mercedes Benz GLC300. The contact stated while driving approximately 55 mph, suddenly there was a loud sound and vibration coming from the vehicle. After stopping the vehicle, it was discovered that sections of the panoramic roof had separated and dislodged from the vehicle. The vehicle was taken to the local dealer who indicated that the vehicle was included in the NHTSA recall campaign number 21V197000 (Structure) however, the part needed to repair the vehicle was not yet available. The manufacturer was notified of the failure. The failure mileage was 62,000.

NHTSA ID

11417939

Incident

Apr 24, 2021

Mileage

62,000 mi

FUEL LINE LEAK: THE TEMPERATURE IN S. FLORIDA HIT A LOW OF 45 DEGREES TONIGHT ON 1 DEC 2020, FIRST NOTING THE ISSUE DESCRIBED. UPON RETURN HOME FROM AN 8 MILE TOTAL TRIP TO THE STORE, MY DAUGHTERS EXITED THE VEHICLE AND NOTED A STRONG GASOLINE ODOR. UPON INVESTIGATION MYSELF, I FOUND GASOLINE POOLING BEHIND THE ENGINE WHERE THE MAIN FUEL LINE CONNECTS TO A RUBBER HOSE. THE POOLING WAS ON THE REAR OF THE UNDERCARRIAGE COVER AS ALSO DESCRIBED BELOW. SIMILAR CASE FOUND ONLINE: HTTPS://WWW.BENZWORLD.ORG/THREADS/GASOLINE-LEAK.2936569/ "THERE IS A FUEL LEAK WHERE THE STEEL LINE FROM THE TANK CONNECTS TO A RUBBER HOSE NEAR THE FIREWALL. THERE IS APPARENTLY A REVISED FUEL LINE CONNECTOR AVAILABLE, NO RECALL AS YET. THIS JOINT IS APPARENTLY PART OF THE LOW-PRESSURE FUEL SYSTEM (4 BAR), NOT THE HIGH-PRESSURE SIDE (200 BAR)."

NHTSA ID

11377402

Incident

Dec 1, 2020

Mileage

8 mi

I HAD AN ACCIDENT AND REARENDEAD ANOTHER CA. HOWEVER MY AIRBAGS DIDN'T DEPLOYED.

NHTSA ID

11360138

Incident

Sep 20, 2020

THE PANORAMIC SUNROOF EXPLODED OUTWARD. I WAS DRIVING AT HIGHWAY SPEED. THIS IS THE SECOND TIME THAT THIS HAS HAPPENED ON THIS VEHICLE

NHTSA ID

11328810

Incident

Jun 12, 2020

Mileage

147,400 mi

WHEN THE VEHICLE IS IN MOTION(VARIOUS SPEED, 1 TIME AT HIGHWAY, 2 TIMES LOCAL STREETS), THE FASTEN SEATBELT LIGHT AND AUDIBLE WARNING CAME ON. ALSO, AT THE SAME TIME, THE SEATBELT TENSIONS (PULLS). THE DRIVER SEATBELT WAS FASTENED THE WHOLE TIME WHILE THIS WAS HAPPENING. *TR

NHTSA ID

11326513

Incident

Feb 26, 2020

Mileage

41,000 mi

FEED LINE TO HIGH PRESSURE FUEL PUMP LEAKING TO ENGINE COMPARTMENT CAUSING ODOR WHEN STARTING IN COLD WEATHER (VEHICLE STATIONARY). HAS BEEN HAPPENING FOR A LONG TIME BUT SIMPLY DID NOT CONNECT THE DOTS.

NHTSA ID

11298138

Incident

Dec 23, 2019

Mileage

63,000 mi

SINCE THE LEASE PURCHASE IN 2017. THE GLC300 HAS BEEN IN SERVICE ON A QUARTERLY BASES FOR THE BRAKES (CONSTANT SQUEAKING MAKING FEEL UNSAFE) AND NOW A CONSTANT CHECK ENGINE LIGHT. THIS IS THE 4TH VEHICLE I LEASE AND BY FAR THE WORST. I CONTACTED MERCEDES USA ASKING THEM FOR A REPLACEMENT VEHICLE. I WAS WILLING TO ACCEPT A USED OR LOANER CAR BUT THE ONLY THING THEY OFFERED WAS $1000 TOWARDS MY NEXT VEHICLE. AS OF TODAY, THE VEHICLE IS BACK IN SERVICE FOR THE 7TH OR 8TH TIME. I AM HOPING SOMEONE CAN HELP OR AT LEAST PREVENT THIS FROM HAPPENING TO SOMEONE. I HAVE ATTACHED ALL PAPERWORK FOR YOUR REVIEW. THANK YOU

NHTSA ID

11170903

Incident

Mar 23, 2017

"TAKATA RECALL" MY 2017 MERCEDES GLC 300 SUV CAUGHT RANDOMLY ON FIRE WHILE DRIVING 65 MPH ON THE FREEWAY. I WAS ABLE TO PULL ON THE SIDE.THEN WHILE ON THE PHONE DESCRIBING THE SITUATION TO THE SERVICE GUY; I SAW THE FIRE AND SMOKE ENTERED INSIDE THE VEHICLE AND I GOT OUT AFTER A LITTLE BIT CAUSE THE CAR HAD NO POWER TO OPEN DOORS OR DO ANYTHING! I THINK THE PROBLEM WAS WITH ELECTRICITY! I WANT THE CAR NO MORE! I WILL RETURN IT BACK!

NHTSA ID

10954561

Incident

Feb 14, 2017

Mileage

2,800 mi

WE WERE DRIVING DOWN THE FREEWAY, TRAVELING APPROXIMATELY 65 MPH IN OAKLAND, CA. THE WEATHER WAS CLEAR - NO RAIN AND APPROXIMATELY 60 DEGREES. ALL OF A SUDDEN, THERE WAS A LOUD NOISE LIKE A GUNSHOT AND OUR PANARAMIC SUNROOF SHATTERED. AT THE TIME, WE HAD A CARGO BOX ON TOP OF THE CAR (ON A FRAME THAT WAS NOT TOUCHING THE SUNROOF) SO IT IS UNLIKELY ANY PROJECTILE COULD HAVE HIT THE CAR. THE CARGO BOX WAS STILL AFFIXED TO THE CAR AND SECURE AFTER THE INCIDENT. IT WAS NOT AN EXTREME TEMPERATURE, NOR WAS THERE ANY EXTREME WEATHER (RAIN, SNOW, HAIL) AT THE TIME. THERE WERE NO UNDERPASSES NEARBY. MOST OF THE GLASS WAS CAUGHT BY THE SUNSHADE, BUT IF WE HAD THE SUNSHADE OPEN, THE GLASS WOULD HAVE ENTERED THE PASSENGER COMPARTMENT. WE HAVE OWNED THE CAR APPROXIMATELY TWO WEEKS AT THIS TIME.

NHTSA ID

10949946

Incident

Feb 5, 2017

Mileage

1,000 mi

I WAS DRIVING STRAIGHT TOWARD HIGHWAY 287 AT 65M SPEED, THERE WAS NO SNOW NO RAIN NORMAL TRAFFIC NO CARS CLOSE TO ME, ALL THE SUDDEN ESP INDICATOR WENT OFF, ACCIDENT COLLISION PREVENTION INDICATOR WENT OFF ON MY DASHBOARD AND THE VEHICLE SPEED WENT DOWN TO 30M, 20M AND I WAS NOT ABLE TO BRING THE SPEED BACK, THE VEHICLE STOPPED RESPONDING. I PULLED OVER CALLED ROAD ASSISTANCE, I TURNED THE ENGINE OFF, START AGAIN I WAS ABLE TO DRIVE AT 20 - 30MILE, WHEN I ENTERED HIGHWAY 46 ON THE TRAFFIC LIGHT THE VEHICLE WAS NOT RESPONDING AT ALL, I KEPT PRESSING THE GAS PEDAL, UNTIL THE CAR START TO DRIVE AGAIN UP TO 25M. TOOK IT TO THE DEALERSHIP WORKSHOP, THEY WAS FAULTS IN THE SENSOR AND GAS PEDAL THEY FIXED.. I TOOK THE VEHICLE AFTER ONE WEEK CHECK ENGINE INDICATOR WENT OFF AGAIN. TOOK IT AGAIN TO THE DEALERSHIP WORKSHOP. I CONSIDER WHAT HAPPENED WITH THIS VEHICLE IS REAL SAFETY ISSUE WHERE ALL THE SUDDEN YOU CAN'T CONTROL THE SPEED ANYTIME ANYWHERE.

NHTSA ID

10949829

Incident

Jan 27, 2017

Mileage

10 mi

VEHICLE HAD FRONTAL IMPACT WITH OTHER CAR ON LOCAL ROAD. THE VEHICLE AIRBAGS ON PASSENGER SIDE INFLATED AND DEFLATED COMPLETELY DIFFERENT COMPARED TO THE DRIVER SIDE AIRBAG. WE BELIEVE MB GLC PASSENGER SIDE AIRBAG HAS FACTORY DEFECT IN OUR CAR. PLEASE SEE ATTACHED PHOTO ON PAGE 2.

NHTSA ID

10946630

Incident

Dec 16, 2016

Mileage

1,300 mi

REFER TO 2016 GLC-300 COMPLAINTS ABOUT SCREECHING SERVICE BRAKES AND COPY/PASTE COMPLAINTS HERE. 2017 MODEL HAS THE SAME SCREECHING NOISES AND CAR WAS PURCHASED IN AUGUST 2016. GOING SLOWLY IN REVERSE OR FORWARD FROM COLD START WILL CAUSE LOUD SCREECHING NOISES. MY NEIGHBORS HAVE CONFRONTED ME ABOUT THE CAR NOISES. IT'S ABSURD THAT THE DOCUMENTED ISSUES FROM THE 2016 MODEL CONTINUES IN THE 2017 MODEL. DEALERS ARE AWARE AND HAVE SAID APPLYING BRAKE PASTE DOES NOT HELP. A LARGER FIX IS STILL IN THE WORKS. THE NOISE IS ALSO MAKING US ATTEMPT TO BACK OUT OF THE DRIVEWAY WITH AS LITTLE BRAKING AS POSSIBLE. AFTER DRIVING A FEW MILES THE SCREECHING WILL MOSTLY STOP. THERE HAVE BEEN OTHER OCCASIONS WHEN IT HAS NOT--LIKELY DUE TO WET OR COLD WEATHER CONDITIONS. AS OF 12/29/2016, DEALER IS SAYING A NEW FIX MAY BE COMING 1/5/2017. I AM HOPEFUL BUT WEARY AND WILL PROCEED WITH LEMON LAW PROTOCOLS. *TR

NHTSA ID

10938545

Incident

Oct 1, 2016