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2012 MERCEDES-BENZ ML350

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2012 MERCEDES-BENZ ML350 do not stand out strongly from the model-year median of 66.5.

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When problems were reported

Mileage at the reported incident

44 reports with mileage · 21 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine. Review the 21 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports1 fire reports4 injury reports

Power Train complaints

6 reports
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122,000 miles · Jul 13, 2026
Power TrainService Brakes, HydraulicSteering

The contact owns a 2012 Mercedes-Benz ML350. While the contact’s wife was driving approximately 30 - 35 MPH, the message "Do Not Drive Vehicle" was suddenly displayed. The vehicle was taken to a mechanic, and the brake fluid reservoir was topped off. The mechanic was unable to find any leaks. The vehicle was not diagnosed or rep…

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The contact owns a 2012 Mercedes-Benz ML350. While the contact’s wife was driving approximately 30 - 35 MPH, the message "Do Not Drive Vehicle" was suddenly displayed. The vehicle was taken to a mechanic, and the brake fluid reservoir was topped off. The mechanic was unable to find any leaks. The vehicle was not diagnosed or repaired. The message turned off and was displayed again 4 hours later. The contact was called by his wife, and the vehicle was driven to the residence after the brake fluid reservoir was refilled. The contact stated that a half mile later, the message was displayed again. The vehicle was driven to the residence and parked. The dealer was contacted and confirmed that there was no recall associated with the VIN related to the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.

NHTSA ODI #11749928

92,000 miles · May 3, 2021
Electrical SystemEnginePower Train

HELLO, REF: ML350 CAMSHAFT SOLENOID LEAK! I AM SEEKING OUT FOR YOUR HELP WRT TO A SITUATION WITH 2012 ML350. ENCLOSED HEREWITH IS AN INSPECTION REPORT FROM A RECENT SERVICE VISIT REQUIRING CLOSE OF $8K IN REPAIRS FOR YOUR REFERENCE. ENGINE HARNESS (OIL LLED HARNESS AND VARIOUS COMPONENTS HAVE OIL IN THEM, ALL COMPONEN…

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HELLO, REF: ML350 CAMSHAFT SOLENOID LEAK! I AM SEEKING OUT FOR YOUR HELP WRT TO A SITUATION WITH 2012 ML350. ENCLOSED HEREWITH IS AN INSPECTION REPORT FROM A RECENT SERVICE VISIT REQUIRING CLOSE OF $8K IN REPAIRS FOR YOUR REFERENCE. ENGINE HARNESS (OIL LLED HARNESS AND VARIOUS COMPONENTS HAVE OIL IN THEM, ALL COMPONENTS WITH OIL SHOULD BE REPLACED, QUICK INSP FOUND A FEW COMPONENTS BUT THERE MAY BE MORE THAT NEED TO BE REPLACED) AFTER REVIEWING THE INSPECTION REPORT, I DID SOME RESEARCH AND CAME ACROSS CAMPAIGN NO. 2012070002, SEPTEMBER 2012 (COPY ENCLOSED FOR YOUR REFERENCE), WHEREIN MERCEDES HAD IDENTIFIED IT AS A PART OF RECALL AND SERVICE CAMPAIGN AND AGREES TO COVER THE COST AND LABOR DAMAGES TO ANY DOWNSTREAM COMPONENTS DUE TO THE CAMSHAFT SOLENOID LEAK. THIS SERVICE CAMPAIGN HAS BEEN INITIATED BECAUSE DAIMLER AG (DAG), THE MANUFACTURER OF MERCEDES- BENZ VEHICLES, HAS DETERMINED THAT DUE TO THE SETTLING PROPERTIES OF THE SEAL, OIL MAY LEAK FROM THE CAMSHAFT ADJUSTMENT SOLENOID. DEALERS WILL RETROFIT FOUR ADAPTER HARNESSES ONTO THE ENGINE WIRING HARNESS AS A PRECAUTIONARY MEASURE AT THE NEXT WORKSHOP VISIT. PLEASE NOTE THAT RECALL AND SERVICE CAMPAIGNS DO NOT EXPIRE AND MAY ALSO BE PERFORMED ON A VEHICLE WITH A VEHICLE STATUS INDICATOR. APPROXIMATELY 557,108 VEHICLES ARE AFFECTED PLEASE REVIEW AND LET ME KNOW IF YOU HAVE ANY QUESTIONS. MERCEDES IS NOT OWNING THE RESPONSIBILITY FOR REPAIR. APPRECIATE YOUR HELP IN THIS REGARD.

NHTSA ODI #11414943

Mileage unknown · Dec 19, 2019
Power Train

FACTORY DEFAULT IN THE TRANSFER CASE

NHTSA ODI #11290074

70,000 miles · Apr 16, 2019
Power Train

THIS CAR'S TRANSMISSION WENT OUT AT 70,000 MILES (2015), WHICH IS WAY TOO EARLY. DRIVING WHEN THE TRANSMISSION BEGAN TO ACT UP WAS VERY DANGEROUS AND POTENTIALLY AS IT LOST POWER COULD HAVE CAUSED COLLISION. I REPLACED TRANSMISSION FOR $14,000 AND THEN THE TRANSMISSION WENT OUT FOR A SECOND TIME (2019). CAUSING THE SAME SAFETY C…

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THIS CAR'S TRANSMISSION WENT OUT AT 70,000 MILES (2015), WHICH IS WAY TOO EARLY. DRIVING WHEN THE TRANSMISSION BEGAN TO ACT UP WAS VERY DANGEROUS AND POTENTIALLY AS IT LOST POWER COULD HAVE CAUSED COLLISION. I REPLACED TRANSMISSION FOR $14,000 AND THEN THE TRANSMISSION WENT OUT FOR A SECOND TIME (2019). CAUSING THE SAME SAFETY CONCERNS AS IT LOST POWER. THIS TIME I WAS NOT STUPID ENOUGH TO FIX IT AND WILL NOT BE BUYING A MERCEDES EVER AGAIN.

NHTSA ODI #11196639

50 miles · Feb 27, 2016
EnginePower Train

FROM THE DAY ONE, DURING THE FIRST 25 MINUTES OF DRIVING, MY NEW 2012 MB ML350 VIBRATES AND MAKE GRINDING NOISE JUST IN BETWEEN 40 TO 45 MILES PER HOUR STEADY DRIVING. AFTER ABOUT 30 MINUTES OF DRIVING, THE VIBRATION AND THE NOISE ARE NOT NOTICEABLE. MB AND THE DEALER WERE TRYING TO FIX THE PROBLEM BUT FAILED TO RESOLVED THE PR…

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FROM THE DAY ONE, DURING THE FIRST 25 MINUTES OF DRIVING, MY NEW 2012 MB ML350 VIBRATES AND MAKE GRINDING NOISE JUST IN BETWEEN 40 TO 45 MILES PER HOUR STEADY DRIVING. AFTER ABOUT 30 MINUTES OF DRIVING, THE VIBRATION AND THE NOISE ARE NOT NOTICEABLE. MB AND THE DEALER WERE TRYING TO FIX THE PROBLEM BUT FAILED TO RESOLVED THE PROBLEM. NOW, THEY HAVE CONCLUDED THAT THE VIBRATION IS NORMAL AND IS CHARACTERISTIC OF THE CAR. ANY PROBLEMS MB CAN'T SOLVE IS NORMAL!! WHAT KIND OF CAR IS IT THAT VIBRATES FOR FIRST 25 MINUTES OF DRIVING AT CERTAIN SPEED IS NORMAL!!

NHTSA ODI #10838764

81,000 miles · Dec 22, 2015
Power Train

OIL WAS LEAKING FROM THE ENGINE WHICH WAS THE RESULT OF A FAULTY PART THAT MERCEDES HAS SUBSEQUENTLY REPLACED WITH A NEW RE-ENGINEERED PART. THE DEALER INDICATED THAT THE ISSUE IS SYSTEMIC WITH ALL BLUE-TEC M AND G CLASS VEHICLES WHICH MERCEDES WILL NOT COVER THE CHARGE FOR. THE REPAIR REQUIRES THAT THE ENGINE BE REMOVED FROM TH…

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OIL WAS LEAKING FROM THE ENGINE WHICH WAS THE RESULT OF A FAULTY PART THAT MERCEDES HAS SUBSEQUENTLY REPLACED WITH A NEW RE-ENGINEERED PART. THE DEALER INDICATED THAT THE ISSUE IS SYSTEMIC WITH ALL BLUE-TEC M AND G CLASS VEHICLES WHICH MERCEDES WILL NOT COVER THE CHARGE FOR. THE REPAIR REQUIRES THAT THE ENGINE BE REMOVED FROM THE CAR BECAUSE THAT IT IS THE ONLY WAY THE PART ($30) CAN BE REPLACED. THE RESULTING REPAIR COST OVER $1900 IN LABOR. WE NOTICED THE LEAK BECAUSE THERE WAS OIL DRIPS IN OUR GARAGE. THE SERVICE TECHNICIAN AT THE DEALERSHIP NOTED THAT WE HAD LOST ABOUT A THIRD OF OUR OIL AND THAT THE OIL WAS COVERING THE ENGINE AND IT WAS ALSO NOTED THAT THE OIL COULD HAVE CAUSED A FIRE IF THE PART WAS NOT IMMEDIATELY REPLACED.

NHTSA ODI #10811684

Official recalls

3

22V955000 · Fuel System, Diesel:delivery:fuel Pump:control/drive Module; Fuel System, Gasoline:delivery:fuel Pump:control/drive Module

Dec 23, 2022

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML550, 2012-2015 ML350, AMG ML63, 2015 ML250, ML400, 2016 GLE450, GLE300, 2016-2018 GLE350, GLE550, 2016-2019 GLE400, 2017-2019 AMG GLE43, and 2016-2020 AMG GLE63 vehicles. Water might accumulate in the spare tire wheel well and damage the fuel pump control unit, which could cause an engine stall while driving.

Consequence & remedy

Consequence: An engine stall while driving increases the risk of a crash.

Remedy: Dealers will install a water drain plug, inspect for water intrusion, and replace the fuel pump control unit as necessary, free of charge. Owner notification letters were mailed February 15, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2023010002 and 2023010003.

Additional source detail variants (2)

Fuel System, Gasoline:delivery:fuel Pump:control/drive Module

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML550, 2012-2015 ML350, AMG ML63, 2015 ML250, ML400, 2016 GLE450, GLE300, 2016-2018 GLE350, GLE550, 2016-2019 GLE400, 2017-2019 AMG GLE43, and 2016-2020 AMG GLE63 vehicles. Water might accumulate in the spare tire wheel well and damage the fuel pump control unit, which could cause an engine stall while driving.

Consequence: An engine stall while driving increases the risk of a crash.

Remedy: Dealers will install a water drain plug, inspect for water intrusion, and replace the fuel pump control unit as necessary, free of charge. Owner notification letters were mailed February 15, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2023010002 and 2023010003.

Fuel System, Diesel:delivery:fuel Pump:control/drive Module

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML550, 2012-2015 ML350, AMG ML63, 2015 ML250, ML400, 2016 GLE450, GLE300, 2016-2018 GLE350, GLE550, 2016-2019 GLE400, 2017-2019 AMG GLE43, and 2016-2020 AMG GLE63 vehicles. Water might accumulate in the spare tire wheel well and damage the fuel pump control unit, which could cause an engine stall while driving.

Consequence: An engine stall while driving increases the risk of a crash.

Remedy: Dealers will install a water drain plug, inspect for water intrusion, and replace the fuel pump control unit as necessary, free of charge. Owner notification letters were mailed February 15, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2023010002 and 2023010003.

18V272000 · Suspension:front

Apr 27, 2018

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML350 Bluetec 4Matic and ML550 4Matic, 2012-2015 ML63 AMG 4Matic and ML350 4Matic, 2013-2016 GL350 Bluetec 4Matic, GL550 4Matic and GL63 AMG 4Matic, 2017 GLS350d 4Matic, GLS450 4Matic, GLS550 4Matic and GLS63 AMG 4Matic, 2015 ML400 4Matic, 2016 GLE400 4Matic, GLE350 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, GLE450 4Matic Coupe and GLE63S AMG 4Matic Coupe, 2015-2016 GL450 4Matic and 2013-2014 GL450 4Matic vehicles equipped with the Active Curve System (ACS). In certain driving conditions, if the oil level in the ACS reservoir is below the minimum level, the oil may foam and leak out of the vent holes in the reservoir cap.

Consequence & remedy

Consequence: The leaking oil in the presence of an ignition source can increase the risk of a fire.

Remedy: MBUSA will notify owners, and dealers will correct the oil level as necessary and replace the reservoir sealing cap to prevent oil foam from leaking out, free of charge. The recall began August 30, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018070015.

17V177000 · Air Bags:frontal:sensor/control MODULE-INACTIVE ; Electrical System:software

Mar 14, 2017

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and SL550 vehicles, 2012 CLS550 4Matic vehicles, 2012-2016 E350 vehicles, 2016-2017 GL450 4Matic vehicles, 2012-2014 ML350 4Matic BlueTec vehicles, 2015 S550, S550 4Matic and C300 4Matic Sedan vehicles, 2015-2016 C300 Sedan vehicles, and 2017 SL63 AMG vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.

Consequence & remedy

Consequence: If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.

Remedy: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

Additional source detail variants (2)

Electrical System:software

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and SL550 vehicles, 2012 CLS550 4Matic vehicles, 2012-2016 E350 vehicles, 2016-2017 GL450 4Matic vehicles, 2012-2014 ML350 4Matic BlueTec vehicles, 2015 S550, S550 4Matic and C300 4Matic Sedan vehicles, 2015-2016 C300 Sedan vehicles, and 2017 SL63 AMG vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.

Consequence: If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.

Remedy: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

Air Bags:frontal:sensor/control MODULE-INACTIVE

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and SL550 vehicles, 2012 CLS550 4Matic vehicles, 2012-2016 E350 vehicles, 2016-2017 GL450 4Matic vehicles, 2012-2014 ML350 4Matic BlueTec vehicles, 2015 S550, S550 4Matic and C300 4Matic Sedan vehicles, 2015-2016 C300 Sedan vehicles, and 2017 SL63 AMG vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.

Consequence: If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.

Remedy: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.