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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.

About this comparison →

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

What owners actually said

65 reports
14,017 miles · Feb 26, 2013
Unknown Or OtherCrash

DRIVER DROVE 2012 MERCEDES BENZ ML350 TO CONDOMINIUM AND PARKED VEHICLE IN PARKING SPACE, PLACED VEHICLE IN "PARK" AND TURNED OFF THE VEHICLE USING THE "KEYLESS GO" BUTTON. DRIVER OPENED THE DOOR, EXITED THE VEHICLE AND LOCKED IT. THE AREA WHERE THE VEHICLE WAS PARKED WAS FLAT WITH ONLY ENOUGH GRADE TO CAUSE WATER TO RUN OFF OF …

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DRIVER DROVE 2012 MERCEDES BENZ ML350 TO CONDOMINIUM AND PARKED VEHICLE IN PARKING SPACE, PLACED VEHICLE IN "PARK" AND TURNED OFF THE VEHICLE USING THE "KEYLESS GO" BUTTON. DRIVER OPENED THE DOOR, EXITED THE VEHICLE AND LOCKED IT. THE AREA WHERE THE VEHICLE WAS PARKED WAS FLAT WITH ONLY ENOUGH GRADE TO CAUSE WATER TO RUN OFF OF THE PAVERS. A SHORT TIME LATER, I LOOKED OUT THE WINDOW AND SAW THAT THE 2012 MERCEDES BENZ ML350 HAD ROLLED AWAY BACKWARDS APPROXIMATELY 30 FEET INTO BUSHES AND SHRUBS ON THE OTHER SIDE OF THE CIRCULAR DRIVE OF THE CONDOMINIUM COMPLEX. FORTUNATELY, NO ONE WAS INJURED AND THE ONLY DAMAGE WAS A SCRATCHED BUMPER. UPON SEEING THE RESULTS OF THE ROLLAWAY, I GRABBED MY CAR KEY, CALLED TO THE DRIVER TO LOOK OUT THE WINDOW AND WENT TO THE VEHICLE. I UNLOCKED THE VEHICLE AND OPENED THE DOOR OF THE ML350. I LOOKED AT THE DASHBOARD AND IT SHOWED THAT THE VEHICLE'S TRANSMISSION WAS IN THE "PARK" POSITION. I NOTE THAT THE MERCEDES BENZ M-CLASS "OPERATOR'S MANUAL STATES THAT THE TRANSMISSION SHIFTS AUTOMATICALLY IN THE "PARK" POSITION IF YOU OPEN THE DRIVER'S SIDE DOOR. WHETHER THIS WOULD CAUSE A ROLLED AWAY VEHICLE TO "AUTOMATICALLY" SHIFT INTO "PARK" IS A QUESTION FOR MERCEDES BENZ TO ANSWER. THE LOCAL MB DEALER HAS EXAMINED THE VEHICLE, MBUSA SENT AN ENGINEER TO INSPECT THE VEHICLE AND SEPARATELY AND TOGETHER THEY HAVE NOT BEEN ABLE TO "FIND ANYTHING WRONG WITH THE VEHICLE" AND THEY PERFORMED NO REPAIRS. FMVSS 114 AT 49 CFR 571.114 REQUIRES THAT VEHICLES OF THIS TYPE MOVE NO MORE THAN 150 MM WHEN PLACE IN "PARK" ON A 10 PERCENT GRADE WITHOUT BENEFIT OF THE VEHICLE'S "PARKING BRAKE" (AKA "EMERGENCY BRAKE"). OUR ML 350 IS EITHER NOT IN COMPLIANCE WITH FMVSS 114 DUE TO IT'S INABILITY TO MAINTAIN ITS POSITION WHILE IN "PARK" OR IT'S INABILITY TO REMAIN IN "PARK" ON A GRADE CONSIDERABLY LESS THAN THE REQUIRED 10 PERCENT GRADE. IS THIS A DESIGN DEFECT?? *TR

NHTSA ODI #10500510

500 miles · Nov 19, 2012
Engine

THIS HAPPENED AS A NEW CAR, ONLY NOW, AFTER IT HAPPENED ABOUT 5 OR 6 TIMES, WE CAME TO KNOW THIS WEIRED AND DANGEROUS PROBLEM-IT LOSES THE POWER AT A STOP; AT RED LIGHT, AND EVEN WHEN WE TRIED TO START TO MOVE. WHEN IT HAPPENED, AT FIRST SEVERAL TIMES, WE WERE THINKING MAYBE I DID SOMETHING, AFTER 5 TO 6 TIMES HAPPENED TO ME AND…

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THIS HAPPENED AS A NEW CAR, ONLY NOW, AFTER IT HAPPENED ABOUT 5 OR 6 TIMES, WE CAME TO KNOW THIS WEIRED AND DANGEROUS PROBLEM-IT LOSES THE POWER AT A STOP; AT RED LIGHT, AND EVEN WHEN WE TRIED TO START TO MOVE. WHEN IT HAPPENED, AT FIRST SEVERAL TIMES, WE WERE THINKING MAYBE I DID SOMETHING, AFTER 5 TO 6 TIMES HAPPENED TO ME AND TO MY WIFE, WE JUST CAME TO UNDERSTAND IT IS SUCH DANGEROUS PROBLEM. NOW, IT HAPPENED AGAIN ON FRIDAY AND WE WENT TO THE MERCEDES DEALER, WE CAME TO KNOW MORE, MANY HAPPEN LIKE THIS, WE ARE NOT THE FIRST; MERCEDES NO SOLUTION, EVEN THEY TRIED TO FIND. SO FAR, STILL NO SOLUTION AT ALL. THE SERVICE GUY DECLARED THAT IT ONLY STOPES AT A STOP!! THEY CANNOT DO ANYTHING AS MERCEDES STILL NO SOLUTION!! WILL ANYONE DRIVE SUCH A WEIRD CAR IT STOPES YOU AT STOP?? WHAT HAPPEN IF IT STOPS YOU ON THE MIDDLE OF THE HIGH WAY?? WHAT WILL HAPPEN IF SOMEBODY HIT YOU FROM THE BACK?? *TR

NHTSA ODI #10485224

3,000 miles · Oct 12, 2012
Engine

VEHICLE LOSES POWER AFTER A FEW HOURS OF DRIVING. THIS PROBLEM DOES NOT SHOW ANY ERROR MESSAGE ON THE DASHBOARD, AND THE DEALER CANNOT FIX THIS PROBLEM AFTER MULTIPLE ATTEMPTS. LAST TRIP TO THE DEALER WHICH WAS 2 WEEKS AGO, THEY INSISTED THAT NOTHING WAS WRONG. HERE ARE EXAMPLES OF HOW SERIOUS THE PROBLEM IS, I WAS STRANDED AN…

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VEHICLE LOSES POWER AFTER A FEW HOURS OF DRIVING. THIS PROBLEM DOES NOT SHOW ANY ERROR MESSAGE ON THE DASHBOARD, AND THE DEALER CANNOT FIX THIS PROBLEM AFTER MULTIPLE ATTEMPTS. LAST TRIP TO THE DEALER WHICH WAS 2 WEEKS AGO, THEY INSISTED THAT NOTHING WAS WRONG. HERE ARE EXAMPLES OF HOW SERIOUS THE PROBLEM IS, I WAS STRANDED AND HAD TO SHUT THE CAR DOWN FOR 30 - 45 MINUTES TO LET THE CAR RESET BEFORE CONTINUE DRIVING. I WAS STRANDED ON GRAPEVINE WHILE DRIVING BACK FROM SAN FRANCISCO TO LOS ANGELES. THE CAR COULD BARELY PULL ITSELF UP THE HILL, AND FREEWAY 5 WAS UNDER CONSTRUCTION WITHOUT MUCH SERVICE LANE THAT I CAN PULL OUT. I GOT LUCKY AND GOT TO PULL OUT BEFORE BIG RIG SLAM INTO MY BACK. THIS CAR WILL SPORADICALLY LOSES POWER ON SURFACE STREET WHICH ALMOST LANDED ME INTO A HEAD ON COLLISION WHILE TRYING TO MAKE LEFT TURN ACROSS ONCOMING TRAFFIC BECAUSE IT WILL NOT MOVE FORWARD. CURRENTLY, MY CAR HAS ABOUT 8000 MILES. I HAVE BEEN CONTACTING MBUSA, BUT THERE IS NO SENSE OF URGENCY ON THEIR END. I FILMED AND TOOK PHOTOS WHILE THE PROBLEM IS IN SESSION BECAUSE CAR COMPUTER WILL NOT LOG ANY. HTTP://WWW.YOUTUBE.COM/WATCH?FEATURE=PLAYER_EMBEDDED&V=OPQQFZT8ZOW HTTP://WWW.YOUTUBE.COM/WATCH?FEATURE=PLAYER_EMBEDDED&V=UZEDC-TNCSU HTTP://WWW.YOUTUBE.COM/WATCH?FEATURE=PLAYER_EMBEDDED&V=M_ZWNZWZ_LY I HAVE A BIT MORE VIDEOS AND PHOTOS, BUT THEY ARE JUST THE REPETITIVE OF WHAT I POSTED ABOVE. I POSTED PICTURES ON THE MBWORLD FORUM. HTTP://MBWORLD.ORG/FORUMS/NEW-M-CLASS-W166/466026-SO-MANY-PROBLEMS-MY-2012-ML350-BLUETEC.HTML [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10479969

200 miles · Aug 14, 2012
Engine

TL* THE CONTACT OWNS A 2012 MERCEDES BENZ ML 350. THE CONTACT STATED THAT THE VEHICLE WOULD NOT START UNTIL AFTER SEVERAL ATTEMPTS. WHILE DRIVING, THE VEHICLE BEGAN TO LOSE POWER. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS, WHO STATED THAT THEY NEEDED TO REPLACE THE PISTONS IN THE ENGINE. THE VEHICLE WAS REPAIRED. THE MAN…

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TL* THE CONTACT OWNS A 2012 MERCEDES BENZ ML 350. THE CONTACT STATED THAT THE VEHICLE WOULD NOT START UNTIL AFTER SEVERAL ATTEMPTS. WHILE DRIVING, THE VEHICLE BEGAN TO LOSE POWER. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS, WHO STATED THAT THEY NEEDED TO REPLACE THE PISTONS IN THE ENGINE. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS CONTACTED. THE FAILURE MILEAGE WAS 200 AND THE CURRENT MILEAGE WAS 800.

NHTSA ODI #10470651

4,000 miles · May 2, 2012
Vehicle Speed Control

I ACCELERATED TO ENTER INTERSTATE #81 AND THE THROTTLE PEDAL RETRACTED FROM FOOT AND PRESSED TO FLOOR. FELT AS IF CRUISE CONTROL HAD ENGAGED BUT IT HAD NOT BEEN. I TAPPED BREAK PEDAL REPEATEDLY AND VEHICLE WOULD NOT STOP. IF IT WAS IN CRUISE CONTROL THIS SHOULD HAVE DISENGAGED IT. THE THROTTLE WAS FULLY FLOORED AND CAR WAS RACI…

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I ACCELERATED TO ENTER INTERSTATE #81 AND THE THROTTLE PEDAL RETRACTED FROM FOOT AND PRESSED TO FLOOR. FELT AS IF CRUISE CONTROL HAD ENGAGED BUT IT HAD NOT BEEN. I TAPPED BREAK PEDAL REPEATEDLY AND VEHICLE WOULD NOT STOP. IF IT WAS IN CRUISE CONTROL THIS SHOULD HAVE DISENGAGED IT. THE THROTTLE WAS FULLY FLOORED AND CAR WAS RACING DOWN INTERSTATE #81 WITH FOUR PASSENGERS OUT OF CONTROL. I APPLIED BREAK PEDAL WITH FULL FORCE FOR ABOUT TWO TO THREE MINUTES AND VEHICLE FINALLY BEGAN SLOWING DOWN AND I PULLED CAR TO SHOULDER OF INTERSTATE. THE ENGINE CONTINUED TO REEVE UNTIL I TURNED OFF THE ENGINE. HORRIBLE EXPERIENCE TO HAVE A STUCK THROTTLE. THE DEALER FINDS NOTHING WRONG WITH IT. I CANNOT AND WILL NOT DRIVE IT AGAIN UNTIL THEY FIND THE PROBLEM OR GIVE ME A DIFFERENT MODEL. THEY HAVE REFERRED ME TO MERCEDES. I AWAIT THEIR DECISION, HOWEVER I HAVE BEEN TOLD IT DOESN'T LOOK FAVORABLE. I DON'T WANT MY MONEY BACK JUST A SAFE CAR TO DRIVE AS I DO NOT HAVE CONFIDENCE IN THIS ONE. THERE IS A PROBLEM WITH THE THROTTLE, THEY JUST CAN'T FIND IT AND I WON'T RISK MY LIFE DRIVING IT AGAIN. I HAVE NO IDEA HOW FAST THE VEHICLE WAS GOING AS I WAS VERY FOCUSED IN WATCHING THE CARS I WAS GOING TO CRASH INTO IF I HADN'T BEEN ABLE TO STOP IT. THIS IS MY THIRD MERCEDES BUT NEVER AGAIN AS THEY ARE NOT BEING HELPFUL IN THE LEAST. WORST EXPERIENCE OF MY LIFE! *JS

NHTSA ODI #10457218

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.