2011 Mercedes-Benz GL450 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2011 Mercedes-Benz GL450, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Airbags3455.7%
- Suspension914.8%
- Brakes711.5%
- Electrical46.6%
- Fuel system23.3%
- Transmission11.6%
- Engine11.6%
- Interior & seats11.6%
- Other / unspecified11.6%
- Powertrain (other)11.6%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
I [XXX] own. The Mercedes Benz, it was in recall for the Air Bag, I took it to the Dealer at the Coral Gables Dealership of the Mercedes, 300 Almeria Ave, Coral Gables 33134. Phone (305)306-3549. and it was check. I was involved in an Accident on ([XXX]) went into a canal. 50 feet down, the Air Bag did not OPEN, the Brake did not brake properly the truck slip through the grass, and we end it in the Canal. I did not was advise the brake were in recall found out later on after the accident the GEIGO the insurance Company advise, but it was too late. I We were Born that Day my husband and me. I have picture of the accident; The check engine was on and off sometime like a year before or maybe more can't recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
STILL WAITING FOR DEFECTIVE TAKATA AIRBAG REPLACEMENT. HAVE TRIED SEVERAL TIMES OVER THE PAST COUPLE YEARS.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
Air compressor fail
WE WERE STOPPED AT A RED STOPLIGHT, OUT OF NOWHERE THERE WAS A LOUD EXPLOSION, SHOOK THE WHOLE CAR AND SANK, THE FEELING LIKE WE WERE IN A SINK HOLE OR LIKE A TIRE BLEW BUT THE TIRE WAS FINE. A LOYD HISSING SOUND ENSUED. THANK GOD, WE WERE AT A STOP LIGHT AND NOT IN A SPEED THAT COULD HAVE BEEN DEADLY.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
The contact owns a 2011 Mercedes-Benz GL450. The contact stated that while driving at various speeds, the message for brake and traction control failure was intermittently displayed, causing the cruise control to disengage. The vehicle was taken to the dealer and was diagnosed with ha ydraulic control unit failure. The contact was informed that the hydraulic control unit needed to be replaced. The vehicle was not repaired due to the cost. The contact related the failure to two undisclosed recalls; however, the VIN was not under recall. The manufacturer was not notified of the failure. The failure mileage was approximately 120,000.
The contact owned a 2011 Mercedes-Benz GL450. The contact stated that while driving and attempting to make a right turn, the vehicle failed to stop, which led him to rear-end a truck in front. There were no warning lights illuminated. The contact sustained a fracture in the finger, and forehead injury caused by the impact with the steering wheel that required medical attention. The air bags did not deploy. A police report was filed, and the vehicle was deemed destroyed. The contact related the failure to the received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The manufacturer was not notified of the failure. The failure mileage was approximately 140,000. The VIN was invalid.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
We smelled smoke from under the passenger seat. We had the car in for a recall and service recently and didn’t understand what was happening. Our three Children smelled the smoke too. Everyone exited the car and it burst into flames.
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ GL450. THE CONTACT STATED THAT IT WOULD TAKE NUMEROUS ATTEMPTS TO START THE IGNITION. NO WARNING LIGHTS ILLUMINATED. OPEN ROAD MERCEDES-BENZ (1250 US-22, BRIDGEWATER TOWNSHIP, NJ 08807 (908) 685-0800) DIAGNOSED THAT THE IGNITION SWITCH NEEDED TO BE REPAIRED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000. *AS CONSUMER STATED THE FAILURE ISSUE IS SAME AS NOTED BY MERCEDES BENZ IN THEIR SERVICE CAMPAIGN (HTTPS://TESTING-PUBLIC.CARMD.COM/TSB/DOWNLOAD/97801/218390). ON THE 3RD PAGE, THERE IS A REFERENCE TO THE 'GL' MODEL CARS AND THE YEAR, HOWEVER MY CAR WASN'T NOTED IN THAT CAMPAIGN, WHICH SHOULD'VE BEEN. I WENT THROUGH QUIET AN INCONVENIENCE AS A RESULT PERSONALLY AND MONETARILY BY M. BENZ'S FAILURE ACCURATELY INCLUDE MY VEHICLE AS PART OF THIS SERVICE CAMPAIGN. *JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
RECALL THE AIR SUSPENSION BAGS KEEPS BUSTING ALSO I CAN'T TELL HOW MUCH GAS IN MY TANK I REPLACE THE BACK AIR SUSPENSION AIR BAG AND NOW THE FRONT HAS GONE OUT I ALSO REPLACE THE SUSPENSION LEVELING VALUE THE CAR BOUNCES WHEN DRIVING
I BOUGHT A MERCEDES GL450 ABOUT A YEAR AGO, IS WELL TAKEN CARE OF EVER SINCE I GOT IT, ALSO THE REASON I PURSHASED THIS VEHICLE BECAUSE I'VE HEARD GOOD THINGS FROM MERCEDES " THAT IT'S SAFE AND A RELIABLE VEHICLE" . SO I THOUGHT AND I WOULD'VE NEVER IMAGINE THIS VEHICLE PUT ME MY FAMILY AND I AT RISK. STARTING WITH THE AIRBAG. THE SENSOR KEEPS ON TRIGGERING IT SO ITS MALFUNCTIONED. ALSO I HAVE AN ABS/ESP SENSOR ON AS WELL. SO AS I AM DRIVING THE CAR THE CAR SUDDENLY BRAKES FREQUENT, THERE'S TIMES THAT IT DOESN'T AT ALL AND THE BRAKE SYSTEM DOESN'T WORK AT ALL. HUGE RED FLAG!!! ON TOP OF THAT I HAVE A FUEL LEAK WHICH I NEVER TOUGHT IT WAS A LEAK, II SMELLED GAS ALL THE TIME AND LIVING BY A GAS STATION I WOULDVE NEVER THOUGHT IT WOULD BE MY CAR. YET THE SMELL FOLLOWED ME EVERYWHERE I WENT WITH THE CAR. SO WHEN I FINALLY LOOKED INTO IT, MIND YOU I NEVER DOUBTED THE MERCEDES BRAND, BUT WAS I WRONG AGAIN.... I HAVE A FUEL LEAK NOW ON TOP OF MY OTHER SAFETY CONCERNS... SCARY ESPECIALLY WITH MY KIDS ABOARD ALSO I HAVE DONE MORE INVESTIGATING ON THE ABS AND IT TELLS ME THAT ALSO MY CAR IS AT RISK OF SLIDING DOWN THE ROAD. THE CAR IS JUST SITTING ON MY DRIVEWAY.. THIS VEHICLE IS SO EXPENSIVE YET SO MANY PROBLEMS AND NONE OF THEM ARE MAINTENANCE ISSUES. I HAVE SPOKEN TO MERCEDES CORPORATE AND SAYS THERE IS NO RECALL ON MY CAR AND THEY CANT DO NOTHING ABOUT IT ALSO THAT MY CAR IS OLD IS PROBABLY A MAINTENANCE ISSUE. MERCEDES CANT EVEN STAND BEHIND THERE EXPENSIVE PRODUCT... WHAT ARE WE REALLY PAYING FOR ESPECIALLY WHEN ITS UNSAFE.... MY CAR CAN BLOW UP ANY MINUTE....!!!! THIS IS RIDICULOUS AND MIND YOU MY CAR ISNT THAT OLD. ITS A 2011!!!! I HAVE HAD A TOYOTA COROLLA THAT HASNT GAVE ME ANY ISSUES FOR OVER 10 YEARS.!! ITS UNACCEPTABLE AND THE FACT THAT MERCEDES CANT EVEN FIX MY ISSUE EVEN WITH A SAFETY HAZARD...!!! I DEMAND SOMETHING TO BE DONE AND AS SOON AS POSSIBLE.PLEASE HELP
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
I PURCHASED A BRAND NEW 2011 MERCEDES BENZ GL450 4MATIC LAST NIGHT. THE CAR HAS A KEYLESS GO SYSTEM. WHEN I WAS PULLING INTO MY DRIVEWAY WITH MY KIDS IN THE CAR THIS AFTERNOON I ACCIDENTALLY TURNED THE CAR OFF WITHOUT PUTTING THE CAR IN PARK AND BEGAN TO EXIT THE VEHICLE. I NOTICED THE CAR STARTED TO ROLL BACK DOWN MY DRIVEWAY. THE CAR NEVER WENT INTO PARK WHEN I TURNED IT OFF. RATHER IT WENT INTO NEUTRAL. I HAVE NEVER DRIVEN A CAR THAT DIDN'T GO INTO A PARK MODE WHEN THE ENGINE WAS TERMINATED. THANK GOODNESS A CHILD WASN'T PLAYING IN MY DRIVEWAY OR MY DOG WAS THERE. A CAR OF THIS SOPHISTICATION, TECHNOLOGY AND PRICE SHOULD HAVE SHIFTED INTO THE PARK MODE, NOT THE NEUTRAL MODE WHEN THE ENGINE WAS TURNED OFF EVEN IF THE CAR WASN'T PUT IN PARK. ADDITIONALLY, OF THAT IS HOW THE CAR WORKS, THEN I WOULD THINK THERE WOULD BE A SAFETY SWITCH N THE DRIVER'S SEAT THAT WOULD DISENGAGE THE GEAR WHEN I WENT TO GET OUT OF THE CAR. I AM TRULY CONCERNED FOR THE SAFETY OF OTHERS AS WELL AS PARKED CARS WITH WHAT I BELIEVE TO BE A MAJOR DESIGN FLAW. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
Check Engine Light came on and took it to the mechanic who identified low compression on cylinder #3. The injector was replaced which did not fix the issue since the vehicle lags when first accelerating. We were also informed of a service bulletin that included the issue with our vehicle and to take the car to the dealer. The vehicle was taken to the dealer who did not check the cylinder low compression/leakage issue because the check engine light wasn't on, which it would not be since it was recently serviced, and the number of miles required had not been driven for the check engine light to come back on. Even though the service bulletin is for the same make, model and years because our VIN was not included that there is no warranty on this vehicle. I now have a vehicle with an engine issue that should be included in the recall based on being the same make, model, year and mechanical issue.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
Heated seat caught fire while driving
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
WERE TOLD BY A MECHANIC AT BETTEN IMPORTS IN GRAND RAPIDS, MI, THAT THE SUSPENSION WAS STUCK IN THE 'LOW' POSITION, CAUSING THE TIRES TO BECOME CUPPED AND PITTED. AFTER KEEPING THE VEHICLE FOR ONE WEEK, BETTEN'S SERVICE MANAGER SAID THAT IT WAS BAD TIRES AND NOT THE SUSPENSION. ONLY ALL SEASON TIRES AVAILABLE FOR THIS BODY TYPE ARE NOT ADEQUATE FOR WINTER DRIVING, AND MAKE DRIVING THIS VEHICLE IN ANY PRECIPITATION HAZARDOUS. DRIVER HAD UPS DRIVER TRAINING EXPERIENCE, AS WELL AS, ON THE ROAD SALES DRIVING EXPERIENCE. VEHICLE BOUNCES AROUND THE ROAD AND TIRES BECOME CUPPED AND PITTED. DRIVER DID NOT HAVE THESE ISSUES WITH ANY PREVIOUS VEHICLE. HAD TO REPLACE THE TIRES THREE TIMES BEFORE 44000 MILES. WE ARE NOT SURE IF THIS IS REALLY AN ISSUE WITH THE TIRES, OR IF THERE IS A SUSPENSION ISSUE WITH THIS VEHICLE, SPECIFICALLY, OR THE MODEL OF THIS VEHICLE, IN GENERAL. VERY UNSAFE TO DRIVE IN THE WINTER. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ GL450. THE CONTACT STATED THAT IT WOULD TAKE NUMEROUS ATTEMPTS TO START THE IGNITION. NO WARNING LIGHTS ILLUMINATED. OPEN ROAD MERCEDES-BENZ (1250 US-22, BRIDGEWATER TOWNSHIP, NJ 08807 (908) 685-0800) DIAGNOSED THAT THE IGNITION SWITCH NEEDED TO BE REPAIRED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000. *AS CONSUMER STATED THE FAILURE ISSUE IS SAME AS NOTED BY MERCEDES BENZ IN THEIR SERVICE CAMPAIGN (HTTPS://TESTING-PUBLIC.CARMD.COM/TSB/DOWNLOAD/97801/218390). ON THE 3RD PAGE, THERE IS A REFERENCE TO THE 'GL' MODEL CARS AND THE YEAR, HOWEVER MY CAR WASN'T NOTED IN THAT CAMPAIGN, WHICH SHOULD'VE BEEN. I WENT THROUGH QUIET AN INCONVENIENCE AS A RESULT PERSONALLY AND MONETARILY BY M. BENZ'S FAILURE ACCURATELY INCLUDE MY VEHICLE AS PART OF THIS SERVICE CAMPAIGN. *JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .