There are 3 stored owner reports matching the engine leading-label group for the 2011 Mercedes-Benz ML-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 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)an Exhaust recycle hose cracked; causing cabin to fill with carbon dioxide. Driver, (me) became disorented.. ran off right shoulder, ran into center divider cement, before rearending truck. Engine light later came on indicating (HVOC?) ERROR Mechanic was able to locate leak and repair. Vehicle now performing properly. A DEFECT THAT ALLOWS CARBON DIOXIDE INTO THE PASSENGER CABIN, IS A SERIOUS AND LIFE THREATENING SITUATION.
OIL COOLER LEAK.
I HAVE A MERCEDES BENZ ML- 350 YEAR 2011. THE VEHICLE HAS A LITTLE OVER 60,00 THOUSAND MILES. THE ENGINE LIGHT FROM MY DASH BOARD STARTED COMING ON. I BROUGHT THE CAR IN TO THE MERCEDES DEALERSHIP FOR A DIAGNOSTIC TEST. THE TEST RESULTS INDICATED THERE'S A PROBLEM WITH THE BALANCE SHAFT. THE REPAIR QUOTE I RECEIVED WAS $9,300.00. THIS IS QUITE ABSURD ... TO SAY THE LEAST ! AS I RESEARCHED THIS ISSUE REGARDING THE BALANCE SHAFT THIS HAS BEEN AN OCCURRING PROBLEM IN THE ML- 350 AND C CLASS MODELS SUCH AS THE C 220. (V6 272 ENGINE) THERE ARE NOTED CLASS ACTION SUITE'S GOING BACK TO THE ML- 350 2006 UP TO THE ML-350 2010. THE MERCEDES BENZ CORPORATION HAS SHOWED ONLY RELUCTANCE IN REPAIRING THIS PREVALENT PROBLEM. THERE POSITION AS STATED THIS ISSUE WAS RECTIFIED FROM THE 2010 RECALL. OBVIOUSLY THE PROBLEM WITH THE BALANCE SHAFT IN THIS ML - 350 MODEL HAS NOT BEEN RESOLVED. MY NEXT STEP IS TO APPROACH THE MERCEDES BENZ CORPORATION AGAIN FOR A FINAL DECISION IN RESOLVING THIS ISSUE. IF THEY DON'T TAKE THE RESPONSIBILITY IN STANDING BEHIND THERE PRODUCT AND KEEPING THEIR REPUTATION IN GOOD STANDING I HAVE NO OTHER CHOICE BUT TO PURSUE THIS AS A LEGAL MATTER...
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.