There are 8 owner-reported engine complaints for the 2014 Mercedes-Benz ML-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Vehicle failed oil consumption test. Vehicle has been leaking and/or losing oil for months despite the issue being alleged fixed under NHTSA recall 18V272. The issue is ongoing and Mercedes Jacksonville is claiming the oil leak is from another issue not covered under warranty or recall order. I do not believe they are unrelated and they have not been able to identify the exact issue.
The seals on oil cooler fail which causes leaks Oil dropping on roadway or oil leaking in engine compartment can cause a fire.
RIGHT PASSENGER TURBO FAILED AFTER 50,000 MILES SEVERAL THOUSAND DOLLARS TO FIX
TAKATA RECALL- INTERMITTENT BURNING SMELL COMING FROM THE HOOD OF THE CAR. SMELL NOTED WHEN CAR IS PARKED AFTER DRIVING FOR SOME TIME.
TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ ML350. WHILE DRIVING AT AN UNKNOWN SPEED, THE "A-SERVICE" INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHERE IT WAS DIAGNOSED AND A BASIC SERVICE WAS PERFORMED, WHICH INCLUDED AN OIL CHANGE AND THE FLUIDS WERE TOPPED OFF. THE FAILURE RECURRED AND THE CONTACT DID A "DEEP STICK" CHECK FOR OIL, WHICH DID NOT REGISTER ANY OIL. THE CONTACT CALLED THE DEALER AND WAS INFORMED TO BRING THE VEHICLE TO THE SHOP. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT TO THE DEALER. THE CONTACT STATED THAT HE COULD NOT UNDERSTAND WHY THE VEHICLE WAS OUT OF OIL SO SOON. THE CONTACT INSTEAD TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC FOR AN OIL CHANGE. THE FAILURE MILEAGE WAS 18,000.
I BOUGHT THIS VEHICLE NEW ON MARCH 2013. WITH THE TIME WE HEAR A STRANGE NOISE, WE THOUGHT IT WAS NORMAL BUT THAT NOISE WAS STRONGER SO WE WENT TO THE DEALER GARAGE ISLA VERDE MERCEDES BENZ, TO THE MAINTENANCE WE TOLD TO THE PERSON ABOUT THAT NOISE, SO THEY SAID TO US THAT EVERYTHING IS OK THEN WE ASK ABOUT THE NOISE IN THE ENGINE AND THEY TOLD THAT "IS A PROBLEM IN THE ENGINE AND MERCEDES BENZ KNOWS THAT, IS AN INTERN ENGINE PROBLEM AND THERE IS A PART THAT CAN'T BE CHANGED! AND ALSO OTHERS MODELS LIKE GLK, E AND ML HAVE THE SAME PROBLEM".. SO I'M WORRY ABOUT THIS BECAUSE THE WARRANTY IS ONLY FOR 40,000 MILES..SO WHAT I CAN DO???? *TR
TL* THE CONTACT OWNS A 2014 MERCEDES BENZ ML350. WHILE DRIVING 40 MPH, THE ENGINE STALLED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TOWED TO A DEALER WHO STATED THAT THE ENGINE MODULE PINS WERE DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 6,138. UPDATED 7/23/15*CN THE CONSUMER REQUESTED TO HAVE THE POST REMOVED.
2014 MERCEDES-BENZ ML 350 CHECK ENGINE LIGHT ILLUMINATED AND ROUGH RUNNING. *MW THE CONSUMER STATED THE DOOR WOULD STICK, THE ELECTRONICS MODULE AND DUEL DOOR CENTRAL LOCK WERE REPLACED. *JB
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.
Data synced from NHTSA on Apr 25, 2026