31 of the 305 complaints filed about the Mercedes Benz GLC300 are about the braking system — 10% of everything owners reported. The worst model year for it is 2016.
31
Complaints
10%
Share of all complaints
2
Crashes
0
Fires
SERVICE BRAKES
Error message of collision prevention assist inoperable. Mercedes dealer wants $400 to look at it only.
NHTSA complaint #11577867 — an unverified report by a vehicle owner.
SERVICE BRAKES
Raw fuel smell when vehicle is at idle. Breaks are very loud at low temperatures. Very squeaky like metal on metal yet the brakes are like new from Mercedes dealership.
NHTSA complaint #11504582 — an unverified report by a vehicle owner.
SERVICE BRAKES
Continuous problem with brakes squealing very loud. Have had brake pads replaced and taken to dealership multiple times to no resolution. It is a huge problem with how loud it is not to mention unsafe and making me feel uneasy about them giving out at any time. This is ongoing from several years ago
NHTSA complaint #11455565 — an unverified report by a vehicle owner.
SERVICE BRAKES
Often after starting the car, inside the car there is a gas smell that we have to closed the vents as it becomes unhealthy until the smell goes away, it last up to 10 minutes. I have taking the car to my mechanic who specializes on Mercedes and could not find any leaks and/or anything wrong. My other issue is that during the raining season when I put my foot on the breaks it makes this loud sound like an airplane landing that I have to release and press and release and press so the car will slow down. My mechanic have done multiple inspections and finds nothing wrong. My third issue is the suspension, driving on freeways at speeds over 55 mph I feel a lot of shaking between front wheels and I can feel every single bump. Again, my mechanic has found nothing wrong that even checked for recalls and has told me that there are no recalls for this vehicle. Obviously there has to be a recall issue and the one more concerning is the gas smell inside the car at start up.
NHTSA complaint #11421354 — an unverified report by a vehicle owner.
SERVICE BRAKES
BRAKES SCREECH LOUDLY WHEN IN REVERSE CAUSING NOISE DISTURBANCE AND CONCERN ABOUT POSSIBLE SAFETY ISSUE. THIS HAS BEEN AN ON-GOING PROBLEM FOR SEVERAL MONTHS AND IS GETTING PROGRESSIVELY WORSE. APPARENTLY, THIS DEFECT WITH BRAKES IS WELL KNOWN TO MERCEDES-BENZ BUT THEY HAVE NOT ISSUED A PROPER FIX OR RECALL FOR THE PROBLEM. VEHICLE PURCHASED PRE-OWNED FROM MERCEDES-BENZ DEALERSHIP IN WALNUT CREEK IN 2018.
NHTSA complaint #11339756 — an unverified report by a vehicle owner.
SERVICE BRAKES
TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300W. WHILE MAKING A RIGHT TURN TO PARK, THE VEHICLE ACCELERATED AUTOMATICALLY AND CRASHED INTO A BUILDING. THE CONTACT STATED THAT THE BRAKES FAILED TO STOP THE VEHICLE. A POLICE REPORT WAS FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE MANUFACTURER WAS NOTIFIED OF FAILURE. THE LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 23,000.
NHTSA complaint #11193090 — an unverified report by a vehicle owner.
SERVICE BRAKES
BOUGHT CAR 3 DAYS AGO AND BRAKES SQUEAL UPON BACKING OUT OF GARAGE AND SOMETIMES APPLYING WHEN STOPPING! SPECIFICALLY ASKED SALESMAN IF MERCEDES HAD PROBLEMS WITH BRAKES MAKING NOISE AS WE WENT THROUGH THIS WITH A VW TOUREG AND WAS TOLD NO THEY DO NOT HAVE THIS PROBLEM. CALLED SALESPERSON TODAY AND WAS INFORMED NOW THAT THEY ARE AWARE OF THIS ISSUE AND ITS NORMAL AND SHOULD ONLY HAPPEN WHEN CAR HAS BEEN SITTING AND ITS COLD OR THEY GOT WET. TOLD IF IT GOES MORE TIMES THAN THAT BRING INTO SERVICE???? VERY DISAPPOINTED WE WERE BOLD FACTLY LIED TO AND NOW HAVE ANOTHER CAR THAT APPEARS TO HAVE BRAKE NOISE ISSUES.
NHTSA complaint #11163133 — an unverified report by a vehicle owner.
SERVICE BRAKES
BRAKES STARTED SCREECHING LOUDLY WHEN BACKING UP STARTLING NEIGHBORS. AFTER SEEING MANY REPORTS ON THIS SAME PROBLEM, I HAD THE DEALERSHIP REPLACE THE BRAKE PADS AS GOODWILL. SCREECHING RETURNED SHORTLY THEREAFTER AND I CONTINUE TO ANNOY NEIGHBORS. RUNFLAT TIRES THREADS WERE WORN OUT AFTER ONLY 10,000 REQUIRING REPLACEMENT OF ALL 4 TIRES. REAR DOOR DRIVER'S SIDE IS UNABLE TO BE UNLOCKED OR OPENED FROM THE INSIDE. DRIVER'S SEAT SIDE PANEL COVERING SEAT BELT CONTINUES TO FALL OFF EXPOSING THE SEAT BELT DRIVE, EVEN AFTER REPAIR BY DEALERSHIP.
NHTSA complaint #11096506 — an unverified report by a vehicle owner.
SERVICE BRAKES
PURCHASED THE CAR NEW FROM DEALER IN MARCH 2016. BRAKES SQUEAL IN REVERSE WHEN THERE'S COLD WEATHER. THE DEALER HAS REPLACED BREAK PADS AND ROTORS 3 TIMES BUT STILL THE SAME ISSUE; I'VE BROUGHT IT IN FOR THE SAME PROBLEM OVER 4 TIMES. THE LATEST 'FIX' WAS JANUARY 2018.
NHTSA complaint #11082406 — an unverified report by a vehicle owner.
SERVICE BRAKES
REAR BRAKING SYSTEM. WHEN BACKING UP OR APPLYING PRESSURE TO THE BRAKES, THE VEHICLE IS SCREAMING A LOUD NOISE. TAKEN BY DEALERSHIP AT 7000 MILES 01/04/18 DEALERSHIP STATES THEY CAN'T FIX IT UNTIL THEY RECEIVE PARTS ,WITH THE TAKATA RECALL AND A FAULTY BRAKING SYSTEM, THIS IS A HIGHWAY SAFETY ISSUE.
NHTSA complaint #11063873 — an unverified report by a vehicle owner.
SERVICE BRAKES
I PURCHASED THIS SUV MARCH 2016. A FEW WEEKS AFTER DELIVERY THE BRAKES STARTED MAKING SQUEAKING SOUND WHEN I BACKED OUT MY GARAGE IN THE MORNING. OVER THE PAST 18 MONTHS I HAVE TAKEN TO THE DEALERSHIP SEVERAL TIMES FOR THIS PROBLEM WITHOUT RESOLUTION. MY SERVICE ADVISER SHAWN AND THE SERVICE DEPARTMENT OF MERCEDES BENZ OF DELRAY HAVE TRIED SOME FIXES BUT ALL HAVE PROVEN TO BE TEMPORARY. THE NOISE GETS PROGRESSIVELY WORSE AFTER EACH "FIX" UNLESS I BRING THE VEHICLE BACK FOR ANOTHER ADJUSTMENT. NOW I AM CONCERNED THAT THERE MAY BE AN UNDERLYING SAFETY ISSUE. WITH THE BRAKES.
NHTSA complaint #11062511 — an unverified report by a vehicle owner.
SERVICE BRAKES
MERCEDES BENZ GLC300 BRAKES BEGAN TO SQUEAL SOON AFTER PURCHASE. THIS WAS NOTICED WHEN BACKING UP AFTER VEHICLE SAT FOR A WHILE, ROTORS AND PADS COOL. REPORTED TO DEALER, BUT THEY DID NOT SEEM CONCERNED OR MENTION ANY KNOWN PROBLEM RELATED TO GLC 300 BRAKE NOISE. I DID NOT PRESS THE ISSUE AT THE TIME AS I THOUGHT IT MIGHT GO AWAY AFTER THE PADS WERE BROKEN IN. UNFORTUNATELY THE PROBLEM HAS GOTTEN PROGRESSIVELY WORSE. NOW IT EVEN SQUEALS WHEN GOING FORWARD IF YOU LIGHTLY APPLY THE BRAKES, AGAIN THIS IS WHEN THE PADS ARE COOL. THE DEALER NOW SAYS THAT THIS IS NOT A COVERED ISSUE, SINCE I HAVE MORE THAN 10000 MILES. MANY REFERENCES TO THIS ISSUE ARE EASILY FOUND ON THE INTERNET FOR THIS PARTICULAR VEHICLE.
NHTSA complaint #11044333 — an unverified report by a vehicle owner.
SERVICE BRAKES
THE BRAKES SQUEAL AT AN INCREDIBLY HIGH PITCH WHEN IN REVERSE THE FIRST FEW TIMES IT IS USED EVERY MORNING. THE SOUND IS PAINFUL. IT HAS BEEN GOING ON SINCE WE LEASED THE CAR IN 6/20/2016 IT HAS BEEN TAKEN IN TO THE DEALERSHIP SEVERAL TIMES FOR THIS PROBLEM...NEVER TO BE FIXED. IT IS NOW MAKING THE SAME HIGH PITCH SQUEAL WHEN YOU ARE BRAKING WHILE DRIVING FORWARD.
NHTSA complaint #11040418 — an unverified report by a vehicle owner.
SERVICE BRAKES
TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. WHILE DRIVING 5 MPH, THE BRAKES MALFUNCTIONED WITHOUT WARNING. THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE VEHICLE SURGED FORWARD INDEPENDENTLY. AS A RESULT, THE VEHICLE CRASHED INTO THE CONTACT'S BARN. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED. THE CONTACT SUSTAINED SEVERE WHIPLASH TO THE NECK AND WRIST PAIN FROM THE CRASH. MEDICAL ATTTENTION WAS REQUIRED. THE VEHICLE WAS TOWED TO MERCEDES-BENZ OF FAIRFIELD (2950 AUTO MALL PKWY, FAIRFIELD, CA 94533), BUT THE DEALER COULD NOT DUPLICATE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE BY VOICEMAIL, BUT NEVER CALLED BACK. THE FAILURE MILEAGE WAS APPROXIMATELY 6,000.
NHTSA complaint #11022721 — an unverified report by a vehicle owner.
SERVICE BRAKES
SOON AFTER PURCHASING MY GLC300 IN MARCH 2016 THE BRAKES STARTED SQUEALING BADLY, BOTH GOING FORWARD BUT MOSTLY BACKING UP.AFTER MANY TRIPS BACK TO DEALERSHIP THEY FINALLY TOLD ME THERE WAS A PROBLEM WITH BRAKE PADS. MERCEDES CAME OUT WITH A FIX AND I HAVE HAD IT DONE 2-3 TIMES AND THE BRAKE SQUEAL HAS NOT BEEN FIXED. AT THIS TIME IT IS GOING BACK AGAIN SO THEY CAN RECREATE THE SQUEAL. FROM ALL MY RESEARCH I HAVE FOUND OUT THAT THEY KNEW THERE WAS A PROBLEM AND IT WAS NEVER DISCLOSED TO ME WHEN I BOUGHT THE CAR, HAD I KNOW I WOULD NEVER HAVE BOUGHT THIS CAR. I FEEL I AM LEFT WITH A PROBLEM THAT MAY NEVER BE FIXED. IRONICALLY I HAVE HAD A 2017 GLC300 AS A LOANER AND IT ALSO HAS THE SAME BRAKE SQUEAL WHILE BACKING UP. AGAIN THEY CONTINUE TO SELL THESE CARD KNOWING THEY ARE NOT FIXED.
NHTSA complaint #10993876 — an unverified report by a vehicle owner.
SERVICE BRAKES
I HAVE A VERY LOUD SCREECHING SOUND WHEN I TAKE REVERSE. I REPORTED THIS ISSUE WHEN I TOOK THE CAR FOR THE FIRST SERVICE. I WAS TOLD IT WAS FIXED BUT IT CAME BACK WITHIN A WEEK. THOUGH I OWN A NEW CAR FEELS EMBARRASSING WHEN I REVERSE OUT OF MY GARAGE WHEN THE WHOLE NEIGHBORHOOD COULD HEAR THE SCREECHING NOISE.
NHTSA complaint #10981302 — an unverified report by a vehicle owner.
SERVICE BRAKES
SQUEALING BRAKES! AT AROUND 6K MILES THE BRAKES STARTING SQUEALING. IT WAS VERY LOUD AND EMBARRASSING. WE TOOK IT IN AND THEY REPLACED THE BRAKES, THE ISSUE STILL PERSISTED. WE'VE SINCE BEEN TOLD THE MANUFACTURER ACCIDENTALLY PACKAGED THE DEFECTIVE BRAKES SO OUR DEFECTIVE BRAKES WERE REPLACED WITH ANOTHER SET OF DEFECTIVE BRAKES. THAT WAS SIX MONTHS AGO (4/2017 NOW) AND WE ARE STILL HAVING THE SQUEALING ISSUE AND HAVE NOT BEEN OF MADE AWARE OF WHEN THE MANUFACTURER WILL ACTUALLY HAVE THE CORRECT REPLACEMENT BRAKES. THIS IS COMPLETELY UNACCEPTABLE AND GIVES ME ABSOLUTELY NO CONFIDENCE IN THE MERCEDES BENZ BRAND.
NHTSA complaint #10979182 — an unverified report by a vehicle owner.
SERVICE BRAKES
THE VEHICLE WAS PURCHASED BRAND NEW IN MARCH 2016. A COUPLE OF MONTHS LATER THE VEHICLE STARTED SQUEAKING WHENEVER IT WAS PUT IN REVERSE AND THE BRAKES APPLIED. THE DEALER SAID MERCEDES WAS AWARE OF THE PROBLEM AND WORKING ON A FIX BUT THERE WAS NOTHING THEY COULD DO AT THIS TIME. THE SQUEAK BECAME LOUDER AND LOUDER OVER TIME. IT ACTUALLY WOULD IRRITATE PEOPLE WITH THE NOISE IT MADE. AFTER WAITING A YEAR THE VEHICLE WAS BROUGHT IN FOR ITS FIRST SERVICE. THE DEALER RELUCTANTLY CHANGED THE BRAKE PADS AND LET US TAKE THE VEHICLE HOME. IT SCREECHED THE NEXT MORNING. IT WAS RETURNED TO THE DEALER. THEY APPLIED SOME COMPOUND ON THE ROTORS. THAT SEEMED TO WORK FOR A DAY OR TWO. IT WAS NOT AN AUTHORIZED MERCEDES SOLUTION AND THE DEALER DID SAY IT MAY NOT WORK. RIGHT NOW WE HAVE A VEHICLE THAT SCREECHES LOUDLY AND CAN'T GET RID OF IT. MERCEDES IS STILL STONEWALLING YET CONTINUES TO SELL THIS VEHICLE.
NHTSA complaint #10969313 — an unverified report by a vehicle owner.
SERVICE BRAKES
I PURCHASED A MERCEDES GLC 300 2017 IN SEPTEMBER IN DELRAY BEACH AND WHEN I APPROACHED 3500 BREAKS STARTED TO SQUEAL. I TOOK THE CAR IN AND THEY SAID THEY WOULD ORDER NEW BREAKS. THIS WAS 2 MONTHS AGO AND NOTHING HAS HAPPENED YET NO FIXES AND THEY WEREN'T EVEN AWARE THAT MANY CONSUMERS HAD COMPLAINED PREVIOUSLY. THEY KEEP GIVING ME THE RUN AROUND THAT THE PARTS ARE COMING FROM GERMANY ETC. I BET YOU IF THEY WERE TRYING TO SELL A CAR THEY WOULD HAVE BROUGHT THAT CAR FASTER THAN MY BREAKS. CAR IS STILL SQUEALING AND WAITING FOR A FIX. MERCEDES SLOGAN IS THE BEST OR NOTHING ELSE ?! WELL..... DEFINITELY NOT THE BEST EXPIRIENCE.
NHTSA complaint #10958319 — an unverified report by a vehicle owner.
SERVICE BRAKES
TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC 300. WHILE THE VEHICLE WAS IN MOTION, THERE WAS AN ABNORMAL NOISE COMING FROM THE FRONT END AND REAR BRAKES. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED, BUT NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 4,500. UPDATED 05/02/17*LJ
NHTSA complaint #10956332 — an unverified report by a vehicle owner.