NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
115 reports41,428 miles · Jun 23, 2010
SeatsFireInjury
DRIVING ON HWY WITH MY 3 CHILDREN IN CAR, I FELT AS IF I HAD A STICKER IN MY PANTS. SOMETHING WAS POKING ME. THEN WE ALL SMELT SOMETHING BURNING, WHICH CDF WAS PARKED ON THE SIDE OF HWY SO WE DIDN'T THINK ANYTHING ABOUT IT. THEN MY OLDEST SAID "MOM THERE'S SMOKE IN THE CAR" I LOOKED BACK IN MY REVIEW MIRROR AND SAW THE BACK …
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DRIVING ON HWY WITH MY 3 CHILDREN IN CAR, I FELT AS IF I HAD A STICKER IN MY PANTS. SOMETHING WAS POKING ME. THEN WE ALL SMELT SOMETHING BURNING, WHICH CDF WAS PARKED ON THE SIDE OF HWY SO WE DIDN'T THINK ANYTHING ABOUT IT. THEN MY OLDEST SAID "MOM THERE'S SMOKE IN THE CAR" I LOOKED BACK IN MY REVIEW MIRROR AND SAW THE BACK OF THE CAR FULL OF SMOKE. I IMMEDIATELY PULLED OFF THE SIDE OF THE HWY AND WE ALL EXITED THE CAR. UPON DOING SO, I GRABBED MY PERSONAL AND IMPORTANT BELONGINGS. NOTICED THE DRIVERS SEAT HAD A HOLE ABOUT THE SIZE OF A NICKEL IN THE BACK PORTION. THEN MY KIDS TOLD ME MY PANTS HAD A HOLE, AND THEN WE NOTICED MY SKIN HAD A BLISTER. I HAD THE CAR TOWED TO THE DEALER(60 MILES) RENTED A CAR THAT HELD 7 PASSENGERS, SINCE I WAS ON MY WAY TO PICK MY PARENTS UP FROM THE AIRPORT 2 1/2 HOURS AWAY FROM OUR HOME. MERCEDES DECLINES TO PAY FOR RENTAL CAR, TOOK THEM 20 DAYS TO GET PARTS AND HAVE IT FIXED. I AM VERY UNHAPPY WITH THIS VEHICLE AND THE DEALER. THEY HAVE NEVER BEEN ANY HELP SINCE WE PURCHASED THE CAR. *TR
NHTSA ODI #10339777
24,500 miles · Jun 17, 2010
SeatsFire
2007 MERCEDES GL450- TURNED ON SEAT HEATERS AND WITHIN A COUPLE MINUTES SMELT BURNING MATERIAL. DISCOVERED THE SEAT HEATER WAS BURNING A HOLE IN THE LEFT SIDE OF THE DRIVER SEAT BACK. TURNED OFF THE SEAT HEATER BUT IT HAD ALREADY BURNED A HOLE ABOUT THE SIZE OF A DIME. TOOK IT IMMEDIATELY TO THE DEALER WHERE THEY STATED THEY HAV…
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2007 MERCEDES GL450- TURNED ON SEAT HEATERS AND WITHIN A COUPLE MINUTES SMELT BURNING MATERIAL. DISCOVERED THE SEAT HEATER WAS BURNING A HOLE IN THE LEFT SIDE OF THE DRIVER SEAT BACK. TURNED OFF THE SEAT HEATER BUT IT HAD ALREADY BURNED A HOLE ABOUT THE SIZE OF A DIME. TOOK IT IMMEDIATELY TO THE DEALER WHERE THEY STATED THEY HAVE SEEN THE SAME PROBLEM BEFORE. THEY ARE ORDERING A REPLACEMENT SEAT BACK, BUT ARE NOT WILLING TO ADDRESS MY CONCERNS ABOUT THE OTHER SEAT. *TR
NHTSA ODI #10336817
72,500 miles · May 20, 2010
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. WHILE ATTEMPTING TO ACCELERATE FROM APPROXIMATELY 70 MPH TO 75 MPH WITH THE CRUISE CONTROL ACTIVATED, THE VEHICLE INVOLUNTARILY DECELERATED THEN STALLED WITHOUT WARNING. THE CONTACT MOVED THE VEHICLE OFF THE ROADWAY AND WAS ABLE TO RESTART THE VEHICLE. WHEN THE VEHICLE WAS RESTAR…
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TL* THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. WHILE ATTEMPTING TO ACCELERATE FROM APPROXIMATELY 70 MPH TO 75 MPH WITH THE CRUISE CONTROL ACTIVATED, THE VEHICLE INVOLUNTARILY DECELERATED THEN STALLED WITHOUT WARNING. THE CONTACT MOVED THE VEHICLE OFF THE ROADWAY AND WAS ABLE TO RESTART THE VEHICLE. WHEN THE VEHICLE WAS RESTARTED, THE CHECK ENGINE LIGHT WAS ILLUMINATED ON THE DASHBOARD. SHE THEN SHUT OFF THE VEHICLE FOR APPROXIMATELY FIVE MINUTES AND WHEN RESTARTING, THE VEHICLE OPERATED AS NORMAL. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS AWAITING A DIAGNOSIS OF THE FAILURE. THE VIN WAS NOT AVAILABLE AT THE TIME OF THE COMPLAINT. THE FAILURE AND CURRENT MILEAGES WERE 72,500.
NHTSA ODI #10331362
36,900 miles · Feb 18, 2010
Engine And Engine Cooling
MY 2007 MERCEDES-BENZ GL-450 WITH 36,900 MILES SUDDENLY LOST POWER AND WAS BARELY RESPONSIVE WHILE DRIVING HOME YESTERDAY (2/17/2010), AND THEN THE CAR REQUIRED 3 OR 4 ATTEMPTS TO SHIFT INTO REVERSE AS I WAS TRYING TO BACK INTO MY DRIVEWAY. I DROVE THE CAR TO THE MERCEDES DEALERSHIP THIS MORNING. THIS PROBLEM FIRST HAPPENED A …
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MY 2007 MERCEDES-BENZ GL-450 WITH 36,900 MILES SUDDENLY LOST POWER AND WAS BARELY RESPONSIVE WHILE DRIVING HOME YESTERDAY (2/17/2010), AND THEN THE CAR REQUIRED 3 OR 4 ATTEMPTS TO SHIFT INTO REVERSE AS I WAS TRYING TO BACK INTO MY DRIVEWAY. I DROVE THE CAR TO THE MERCEDES DEALERSHIP THIS MORNING. THIS PROBLEM FIRST HAPPENED A FEW MONTHS AGO (AUGUST 2009 AT 34,500 MILES) DURING HIGHWAY DRIVING WITH MY FAMILY IN THE VEHICLE WHILE WE WERE OUT OF TOWN ON A VACATION TRIP. WE HAD TO REPEATEDLY PULL OFF THE HIGHWAY, TURN THE CAR OFF FOR AWHILE AND THEN RESTART, TO GET THE VEHICLE TO HAVE SUFFICIENT POWER TO GET HOME AND TO THE MERCEDES DEALERSHIP. AT THAT TIME THE MERCEDES DEALERSHIP REPLACED A CAMSHAFT SOLENOID MAGNET. THIS PROBLEM IS SO DANGEROUS THAT WE HAVE NOW LOST CONFIDENCE THAT WE CAN SAFELY TAKE THIS VEHICLE ON A VACATION TRIP. *TR
NHTSA ODI #10311851
49,000 miles · Feb 3, 2010
Service Brakes, HydraulicCrash
TODAY MY HUSBAND WAS INVOLVED IN A CAR ACCIDENT WHILE DRIVING MY 2007 GL450. THANK GOD HE WASN'T INJURED BUT THE SITUATION HE EXPLAINED TO ME HAS HAPPENED SEVERAL TIMES BEFORE AND I'VE BEEN ABLE TO REGAIN CONTROL OF THE CAR BEFORE SOMETHING TERRIBLE HAPPENED. HE LEFT HOME FOR WORK AT ABOUT 6AM AND WHILE STILL IN THE SUBDIVISION …
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TODAY MY HUSBAND WAS INVOLVED IN A CAR ACCIDENT WHILE DRIVING MY 2007 GL450. THANK GOD HE WASN'T INJURED BUT THE SITUATION HE EXPLAINED TO ME HAS HAPPENED SEVERAL TIMES BEFORE AND I'VE BEEN ABLE TO REGAIN CONTROL OF THE CAR BEFORE SOMETHING TERRIBLE HAPPENED. HE LEFT HOME FOR WORK AT ABOUT 6AM AND WHILE STILL IN THE SUBDIVISION DRIVING ABOUT 20 MILES/HR ON A ROAD WITH ABOUT 1" OF SNOW, HE TRIED TO MAKE A RIGHT TURN BUT THE BRAKES LOCKED AND THE STEERING WOULDN'T TURN AND HE ENDED UP SMASHING THE FRONT END ON A HUGE STONE AND RICOCHETING TO A FIRE HYDRANT. LIKE I SAID, THIS HAS HAPPENED BEFORE AND I'D BEEN ASSUMING THAT THE SKIDDING WAS BECAUSE OUR TIRES WERE WORN BUT WE GOT BRAND NEW TIRES LESS THAN A WEEK AGO SO THIS DOES NOT MAKE ANY SENSE. I HAVEN'T BEEN IN TOUCH WITH MERCEDES YET BUT I WILL BE CONTACTING THEM TO ADVISE THEM OF THIS ISSUE. *TR
NHTSA ODI #10304549
Mileage unknown · Dec 31, 2009
Electrical System
THIS COMPLAINT IS IN REGARDS TO A 2007 MERCEDES GL450. I HAVE HAD ELECTRICAL PROBLEMS WITH THIS CAR FROM THE VERY BEGINNING. 14 DAYS AFTER PURCHASING VEHICLE WENT INTO THE SHOP. ON 2 OCCASIONS MY CAR SHUT COMPLETELY DOWN ON BUSY ROAD WAYS AND BOTH TIMES MERCEDES DID NOT WANT TO FIX THE CAR. MERCEDES CLAIMED A DRINK WAS SPIL…
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THIS COMPLAINT IS IN REGARDS TO A 2007 MERCEDES GL450. I HAVE HAD ELECTRICAL PROBLEMS WITH THIS CAR FROM THE VERY BEGINNING. 14 DAYS AFTER PURCHASING VEHICLE WENT INTO THE SHOP. ON 2 OCCASIONS MY CAR SHUT COMPLETELY DOWN ON BUSY ROAD WAYS AND BOTH TIMES MERCEDES DID NOT WANT TO FIX THE CAR. MERCEDES CLAIMED A DRINK WAS SPILT IN THE CAR ON A COMPUTER SYSTEM UNDER THE FRONT PASSENGER SEAT. ON THE FIRST OCCASION LIGHTS STARTED FLASHING AND WITH IN 30 SECONDS THE CAR LOST ALL POWER AND HAD TO BE PUSHED OFF THE ROAD WAY. ALL OF THE DOORS WERE LOCKED UP WE FINALLY MANAGED TO CLIMB OUT THE DRIVERS SIDE. I HAD 3 KIDS IN MY CAR AND THE THOUGHT OF NOT BEING ABLE TO GET OUT OF THIS CAR REALLY CONCERNS ME. ON THE SECOND OCCASION WHICH WAS APPROXIMATLY 2 WEEKS LATER THE CARS WINDOWS STARTED ROLLING UP AND DOWN AND SMOKING. THE CAR THEN SHUT DOWN ON US AND AT THIS POINT WAS SMOKING SO BAD MY KIDS WERE COUGHING. THE CAR THEN JUMPED OUT OF PARK. AGAIN THE CAR WAS TOWED IN THE NEXT DAY AND MERCEDES SAID WE SPILT A DRINK IN THE CAR THAT SHUT IT DOWN. MERCEDES REFUSED TO FIX THE CAR EVEN THOUGH IT WAS STILL UNDER WARRANTY. THIS CAR IS NOT SAFE. I HAVE DONE MUCH RESEARCH AND HAVE TALKED TO SEVERAL PEOPLE WHO HAVE HAD THE SAME PROBLEMS AND HAVE BEEN TOLD THEY SPILT A DRINK AND THAT IS WHY IT SHUT DOWN. ONE MAN'S CAR CAUGHT ON FIRE IN A DRIVEWAY ANOTHER'S GL WAS PARKED IN THE GARAGE AND BURNT HIS HOUSE DOWN KILLING HIS ANIMALS. THE LIST GOES ON AND MERCEDES WILL NOT RECALL THIS MODEL. *TR
NHTSA ODI #10297635
32,000 miles · Dec 12, 2009
SeatsFire
2007 MERCEDES GL450 ON DEC 11 2009 I NOTICED THE SMELL OF SOMETHING BURNING WHILE DRIVING MY SUV. SHORTLY THEREAFTER I FELT AN INTENSE BURNING ALONG MY LEFT LOWER BACK. I IMMEDIATELY PULLED OVER AND EXITED THE VEHICLE. ALONG THE LEFT SIDE BACK OF THE DRIVERS SEAT WAS A 1.5 X 0.5INCH HOLE BURNT THROUGH THE FABRIC. I WAS USING…
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2007 MERCEDES GL450 ON DEC 11 2009 I NOTICED THE SMELL OF SOMETHING BURNING WHILE DRIVING MY SUV. SHORTLY THEREAFTER I FELT AN INTENSE BURNING ALONG MY LEFT LOWER BACK. I IMMEDIATELY PULLED OVER AND EXITED THE VEHICLE. ALONG THE LEFT SIDE BACK OF THE DRIVERS SEAT WAS A 1.5 X 0.5INCH HOLE BURNT THROUGH THE FABRIC. I WAS USING THE SEAT HEATER AT THE TIME. THE INCIDENT DAMAGED MY PANTS AND LEATHER JACKET. *TR
NHTSA ODI #10295436
37,600 miles · Sep 28, 2009
SeatsFireInjury
2007 MERCEDES GL . TURNED ON SEAT WARMER, MINUTES LATER, BOTH PEOPLE IN CAR STARTED COUGHING BECAUSE OF FUMES. DRIVER FELT SOMETHING BURNING, SEAT HEATER BURNED A HOLE IN LEATHER SEAT, DRIVER'S SHIRT AND ON BODY. *TR
NHTSA ODI #10285511
18,000 miles · Apr 22, 2009
Service Brakes, Hydraulic
1. MADE A LEFT TURN ONTO THE ROADWAY FROM A STOP. 2. HAD FAILURE OF THE ABS, ESP AND PARKTRONIC SYSTEMS OF THE VEHICLE. STEERING WHEEL FELT LIKE THERE WAS A LOSS OF POWER STEERING. 3. THE VEHICLE WAS PARKED AND STARTED. THIS CONDITION SELF CORRECTED AFTER STARTING THE VEHICLE A SECOND TIME. HAVE HEARD THIS IS AN ISSUE WITH …
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1. MADE A LEFT TURN ONTO THE ROADWAY FROM A STOP. 2. HAD FAILURE OF THE ABS, ESP AND PARKTRONIC SYSTEMS OF THE VEHICLE. STEERING WHEEL FELT LIKE THERE WAS A LOSS OF POWER STEERING. 3. THE VEHICLE WAS PARKED AND STARTED. THIS CONDITION SELF CORRECTED AFTER STARTING THE VEHICLE A SECOND TIME. HAVE HEARD THIS IS AN ISSUE WITH VEHICLES FROM OTHER MANUFACTURERS AS WELL. *TR
NHTSA ODI #10266409
27,088 miles · Nov 24, 2008
SeatsFire
TL*THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. WHILE DRIVING 15 MPH FOR APPROXIMATELY FIVE MINUTES, THE CONTACT ACTIVATED THE HEATED SEATS. MINUTES LATER, SHE FELT PAIN ON HER REAR. SHE NOTICED THAT THE LEATHER ON THE FRONT DRIVER'S SEAT WAS MELTING AND ON FIRE. SHE SAFELY PULLED OVER AND EXITED THE VEHICLE. SHE CALLED THE…
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TL*THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. WHILE DRIVING 15 MPH FOR APPROXIMATELY FIVE MINUTES, THE CONTACT ACTIVATED THE HEATED SEATS. MINUTES LATER, SHE FELT PAIN ON HER REAR. SHE NOTICED THAT THE LEATHER ON THE FRONT DRIVER'S SEAT WAS MELTING AND ON FIRE. SHE SAFELY PULLED OVER AND EXITED THE VEHICLE. SHE CALLED THE DEALER AND IS IN THE PROCESS OF HAVING THE VEHICLE INSPECTED. THE FAILURE AND CURRENT MILEAGES WERE 27,088.
NHTSA ODI #10249660