2010 Mercedes-Benz ML350 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 2010 Mercedes-Benz ML350, 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
- Airbags6760.9%
- Electrical109.1%
- Seat belts109.1%
- Brakes65.5%
- Exterior lighting54.5%
- Engine54.5%
- Steering43.6%
- Suspension10.9%
- Body & structure10.9%
- Fuel system10.9%
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 have reached out to Mercedes-Benz to have the 2 recalls fixed. They tell me I will receive a letter with instructions. I have not received any letters and it's been more than 6 months.
WITHOUT WARNING WHILE IN MOTION, ON A COUNTRY ROAD, AN ALARM WENT OFF STATING "RETURN TO WORKSHOP" TURN SIGNALS STOPPED WORKING, DASHBOARD WHEN BLANK (NO SPEEDOMETER WORKING), SRS ALARM AND COULD NOT PUT THE VEHICLE IN PARK OR NEUTRAL. *TR
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
Vehicle will not crank/start intermittently key turns in the ignition but nothing happens. Front door on the right and left will not operate and have to push down locks in order for vehicle to lock and prevent vehicle/ property theft.
WITHOUT WARNING WHILE IN MOTION, ON A COUNTRY ROAD, AN ALARM WENT OFF STATING "RETURN TO WORKSHOP" TURN SIGNALS STOPPED WORKING, DASHBOARD WHEN BLANK (NO SPEEDOMETER WORKING), SRS ALARM AND COULD NOT PUT THE VEHICLE IN PARK OR NEUTRAL. *TR
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
PASSENGER SIDE REAR SEAT BELT RETRACTOR FAILED AND SEAT BELT IS IN FULLY EXTENDED POSITION AND WON'T RETRACT, MAKING IT UNUSABLE FOR PROTECTION OF A PASSENGER IN THAT SEAT. THE VEHICLE HAS NEVER BEEN IN AN ACCIDENT OR SUFFERED ANY IMPACT, ETC., AND WHEN A PASSENGER HAD USED THE BELT AND WENT TO TAKE IT OFF IT WOULDN'T RETRACT. THERE HAD BEEN NO PRIOR INDICATION OF A PROBLEM. I AM THE ORIGINAL OWNER AND MY VEHICLE HAS ONLY 24,280 MILES ON IT AND THE SEATBELT IN QUESTION HAS ONLY BEEN USED 10 OR 15 TIMES IN THE 8 YEAR LIFE OF THE VEHICLE AS MY WIFE AND I ARE THE ONLY USERS, OUR CHILDREN ALL GROWN AND LONG GONE. THE MERCEDES DEALER WE PURCHASED THE VEHICLE FROM SAYS THE RETRACTOR CANNOT BE REPAIRED AND NEEDS TO BE REPLACED AT A COST IN EXCESS OF $800. I CAN'T AFFORD THAT, SO IT WON'T BE REPAIRED.
JUST BOUGHT THIS CAR FROM A FAMILY MEMBER WHO TAKES GREAT CARE OF THEIR CARS. THE REAR DRIVERS SIDE PASSENGER SEATBELT DOES NOT WORK. I GENTLY PULLED OUT AND IT DOESN'T RETRACT NO MATTER WHAT I TRIED. NOW I CAN'T USE WITH MY 3 KIDS. THESE REAR SEAT BELTS WERE ONLY LIGHTLY USED FROM PREVIOUS OWNER AS THIS WAS HER COMMUTER CAR .SEEMS TO ME THIS HAS BEEN A COMMON COMPLAINT ONLINE YET NO RECALL. PLEASE INVESTIGATE RIGHT AWAY.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
Before the incident my Mercedes started to pull away from me each time I attempted to press the brakes. At times the when I would press the brakes nothing would happen at all as if I wasn’t pressing them at all. Well on the night of February 18,2022 I was coming around a curb and when I went to press the brakes, my Mercedes began to sway slightly but the brakes never kicked in. The result of the incident totaled my vehicle, took out two transformers and a light pole, and costed me a careless operation ticket, the storage and towing of the vehicle from the incident, to the tow yard, then back home, as well as paying the ticket and having to pay the dmv. There is still an unknown amount due to demco (the energy company) for the light pole, two transformers, after hours workers and the actual worked and labor they performed. The recall flyers hadn’t been mailed out until a few months after the wreck so I had no knowledge of the issues happening nor the fact that driving the vehicle could be detrimental.
I have reached out to Mercedes-Benz to have the 2 recalls fixed. They tell me I will receive a letter with instructions. I have not received any letters and it's been more than 6 months.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
BRAKE LIGHTS & REAR TAIL GATE MALFUNCTION AFTER RUNNING CAR THROUGH CAR WASH. THE PROBLEMS SELF-CORRECT AFTER A COUPLE OF DAYS. SUSPECT THAT WATER IS SOMEHOW GETTING IN VIA FAULTY SEALS. THERE ARE MULTIPLE COMPLAINTS ABOUT SIMILAR ISSUES AND MBENZ HAS EVEN ISSUED RECALLS FOR OTHER MODELS. IN ONE RECALL, THE PROBLEM IS NOTED TO POTENTIALLY CAUSE A FIRE. ALTHOUGH DEALER IS AWARE OF THIS PROBLEM, THE BOERNE, TX SERVICE REP HAS NO INTEREST IN INVESTIGATING THE MATTER FURTHER UNLESS, KNOWING OTHERS HAVE SIMILAR ISSUES, UNLESS I PAY FOR THE SERVICE. HOPE WE DON'T EARN A TICKET OR CAUSE AN ACCIDENT.
THE LED TAIL LIGHTS ARE FAILING. MY ASSESSMENT ON THIS ISSUE IS THAT WATER AND DEBRIS ARE ENTERING THE TAIL LIGHT DUE TO A GASKET OR SEAL THAT IS FAILING. DEALER AND MERCEDES DOES NOT WANT TO HELP, AND HAVE TOLD ME THEY WILL NO LONGER RESPOND TO MY EMAILS. IM GETTING THE RUN AROUND. ITS CLEARLY A SAFETY DEFECT/HAZARD, BASED ON TRANSPORT CANADA. THIS HAPPENS WITH NO WARNING, UNTIL ENOUGH LED'S ARE OUT THE MESSAGE TURNED ON.
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
2010 ML350 STARTS RIGHT UP WHEN COLD IN THE MORNING. IF I GO TO A STORE AND RETURN TO THE CAR WHEN I INSERT AND TURN THE KEY NOTHING HAPPENS NO LIGHTS ON DASH. AFTER STRUGGLING FOR 5 MINUTES TRYING EVERYTHING FROM LOCKING/UNLOCKING OPENING DOORS TURNING KEY SLOWLY IT FINALLY STARTS. THIS PROBLEM STARTED A MONTH AGO AND IS BECOMING MORE FREQUENT NOW. AFTER READING NUMEROUS COMPLAINS ON FORUMS I ASSUME IT IS THE ESI (ELECTRONIC SYSTEM IGNITION) AND IT IS AN EXPENSIVE FIX SO I CALLED MERC BENZ AND COMPLAINED AND ASKED IF THERE IS A RECALL. THERE IS NO RECALL AND CUSTOMER SERVICE TOLD ME SHE IS NOT A MECHANIC AND WANTS ME TO TAKE IT TO THE DEALER. AS I AM AWARE THIS REPAIR COST CUSTOMERS FROM 1200-1800 DOLLARS.
TL* THE CONTACT OWNS A 2010 MERCEDES BENZ ML350. THE CONTACT STATED THAT WHILE DRIVING, THE ENGINE STALLED WITHOUT WARNING. THE FAILURE RECURRED FOUR TIMES. THE VEHICLE WAS ABLE TO RESTART. THE VEHICLE WAS NOT TAKEN TO A DEALER OR DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 41,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
Steering became increasingly sluggish and difficult to navigate; i took the vehicle into the shop and they said there is metal shards or shavings being worn into the power steering fluid and destroying the pump, clogging up the filter and the rack and pinion steering system is also being compromised making the vehicle unsafe to operate.
Before the incident my Mercedes started to pull away from me each time I attempted to press the brakes. At times the when I would press the brakes nothing would happen at all as if I wasn’t pressing them at all. Well on the night of February 18,2022 I was coming around a curb and when I went to press the brakes, my Mercedes began to sway slightly but the brakes never kicked in. The result of the incident totaled my vehicle, took out two transformers and a light pole, and costed me a careless operation ticket, the storage and towing of the vehicle from the incident, to the tow yard, then back home, as well as paying the ticket and having to pay the dmv. There is still an unknown amount due to demco (the energy company) for the light pole, two transformers, after hours workers and the actual worked and labor they performed. The recall flyers hadn’t been mailed out until a few months after the wreck so I had no knowledge of the issues happening nor the fact that driving the vehicle could be detrimental.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
VEHICLE HAS A VERY UNSTABLE RIDE THAT CONTINUES TO WORSEN. THE PROBLEM AROSE ABOUT 4 YEARS AGO AND CONTINUES TO WORSEN -- MORE SO OVER THE LAST YEAR. I'VE OWNED THE VEHICLE FOR ALMOST 10 YEARS AND TAKE METICULOUS CARE OF IT. I'VE KEPT UP WITH ALL MAINTENANCE AND ALWAYS PURCHASE THE BEST QUALITY REPLACEMENT TIRES. NOW THE VEHICLE IS SO UNSTABLE WITH ANY MINIMAL ROAD BUMPS OR EVEN SLIGHTLY UNEVEN SURFACES AT SPEEDS GREATER THAN 35 MPH. SUV LOSES IT'S "GRIP" WITH THE ROAD, ESPECIALLY CONCERNING IF MAKING A TURN AT THE SAME TIME. THERE HAVE BEEN TIMES WHEN MAKING A SLIGHT CURVE AT HIGHWAY SPEEDS, THAT WE HIT A TINY UNEVEN ROAD PATCH, WHERE THE VEHICLE SLIDES TO THE OPPOSITE DIRECTION WHERE WE'RE TRYING TO TURN. HAVE TAKE VEHICLE A COUPLE OF TIMES TO THE DEALER. EACH TIME THEY COME UP EMPTY -- THE LAST TIME THEY REPLACED THE BUSHINGS AT A HEFT COST, YET THE PROBLEM PERSISTS. THIS IS A DANGEROUS PROBLEM AND WILL ONLY BE A MATTER OF TIME BEFORE AN ACCIDENT OCCURS. DEALER IS NOT OFFERING MUCH HELP. TODAY'S SERVICE REP INDICATED HE FELT THE STEERING DID NOT "FEEL RIGHT."
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
Vehicle will not crank/start intermittently key turns in the ignition but nothing happens. Front door on the right and left will not operate and have to push down locks in order for vehicle to lock and prevent vehicle/ property theft.
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
MASSIVE DIESEL LEAK FROM THE TOP OF THE FUEL TANK WHEN FILLING UP. THEN CEL CAME ON AND CAR LOST POWER. GOING UPHILL IN A CRUISE CONTROL, STARTED WITH 60, BY THE END OF THE FAIRLY EASY HIL, IT WAS BARELY DOING 20. WHEN FILLING UP, DIESEL LEAKED ALL OVER THE PLACE FROM PASSENGER SIDE FUEL TANK. MAJOR SAFETY ISSUE, CAN CAUSE FIRE OR STRANDED ON HIGHWAY. SHOULD BE INVESTIGATED AND MAY BE FIXED AS RECALL. 400 MILES FROM HOME ON A HOLIDAY, WITH FAMILY. BARELY MADE HOME, WITH MY WIFE LOOKING BACK IF THERE THERE IS FIRE BREAK OUT. WHITE KNUCKLE DRIVE. FUEL SHOULD NEVER LEAK LIKE THIS.
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 .