There are 6 stored owner reports matching the engine leading-label group for the 2007 Mercedes-Benz GL-Class in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 6 of 6 matching reports.
Open the full vehicle complaint log (all categories)CHECK ENGINE LIGHT-- CAUSED BY TIMING CHAIN AND SPROCKET WEAR-- COMMON ISSUE WITH MANY MERZ OF THIS TYPE OF ENGINE. *TR
TL* THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. THE CONTACT STATED THAT THE VEHICLE WOULD STALL SPORADICALLY WITHOUT WARNING. THE VEHICLE WOULD FIRST POWER DOWN AND THE LIGHTS WOULD FLICKER ON AND OFF BEFORE STALLING. THE DEALER WAS IN THE PROCESS OF DIAGNOSING THE FAILURE. THE MANUFACTURER PROMISED TO CALL THE CONTACT BACK WITH SOME ASSISTANCE FOR REPAIRS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 1,000 AND THE CURRENT MILEAGE WAS 15,000.
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
MY GL 320 ? 2007 LOST ALL ELECTRICAL POWER AND THE ENGINE STALLED WHILE BEING DRIVEN. THE POWER COMES BACK ON IN 10 TO 20 SECONDS AND THE CAR CAN BE RESTARTED. THIS HAPPENED 3 TIMES DURING THE FIRST 10 DAYS OF OCT 2009 WHEN THE MILEAGE WAS JUST UNDER 30,000. NOTE THE POWER STEERING AND BRAKE ASSIST GO OUT COMPLETELY AS DO THE HEADLIGHTS. ON ONE ACCESSION AT NIGHT ON A CURVE I WENT OFF THE ROAD BEFORE BEING ABLE TO STOP. ON ALL OCCASIONS THIS HAPPENED 15 TO 20 SECONDS AFTER APPLYING THE BRAKES TO DEACTIVATE THE SPEED CONTROL AND AFTER COASTING TO LESS THAN APPX. 40MPH. THE DEALER COULD FIND NO DIRECT CODE INDICATION FOR THE PROBLEM BUT DID FIND NUMEROUS LOW VOLTAGE CODES AND CHANGED OUT A NUMBER OF FUSE AND REFUSE BOXES AND FUSES. THE CAR HAS BEEN DRIVEN ONLY 100 MILES SINCE THE DEALER WORK AND THE PROBLEM HAS NOR RECURRED. *TR
TL*THE CONTACT OWNS A 2007 MERCEDES BENZ GL450. WHILE DRIVING 65 MPH, THE VEHICLE SHUT OFF WITHOUT WARNING. THE CONTACT PULLED TO THE SIDE OF THE ROAD AND THE VEHICLE WAS TOWED TO THE DEALER. THE DEALER HAS BEEN UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. THIS FAILURE HAS OCCURRED PREVIOUSLY. THE CURRENT AND FAILURE MILEAGES WERE 11,139.
ON THREE SEPARATE OCCASIONS THE 'CHARGE AIR HOSE' CONNECTING TO THE TURBO INTERCOOLER SYSTEM ON MY 2007 MERCEDES GL320CDI HAS FAILED. THE HOSE HAS BEEN REPLACED FOUR TIMES TOTAL. ACCORDING TO INTERNET MESSAGE BOARDS THERE ARE NUMEROUS FAILURES THAT MB HAS FAILED TO FIX INCLUDING MINE. ON ALL OCCASIONS OF THE INCIDENT MY ENTIRE FAMILY HAS BEEN IN THE VEHICLE. WHILE UNDER ACCELERATION THE HOSE FAILS AND FORWARD SPEED IS LOST. ON TWO OCCASIONS I HAVE BEEN ON THE INTERSTATE AND DRIVING ON THE INCLINE OF A HILL WHERE OTHER VEHICLES WERE BEHIND ME. IT IS NOT SAFE. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.