TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ ML250. THE CONTACT STATED THAT THE ENGINE DEVELOPED A DIESEL FUEL LEAK OVER THE MOTOR, WHICH RAN ACROSS THE ENGINE. THE MOTOR WAS SOAKED WITH DIESEL FUEL. ALSO, WHILE DRIVING, THERE WAS AN ODOR OF FUEL INSIDE THE VEHICLE. THE CONTACT DROVE HOME AND CALLED VALLEY IMPORT (402 40TH ST S, FARGO, ND 58103, (888) 929-9843) TO SCHEDULE AN APPOINTMENT. THE VEHICLE…
2015 mercedes-benz ML-Class engine problems
moderate 9 complaints filed with NHTSA · avg repair $3,100
Complaints
9
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 3 most recent
The contact owns a 2015 Mercedes-Benz ML350. The contact stated while driving at an undisclosed speed, the engine seized without warning. The vehicle was towed to the local dealer where it was diagnosed there was a possible mechanical break down due to engine sludge, ignition varnish rust, corrosion, dust, cracked rubber, dry rot, road chemicals, alterations or improper oil, coolant, fuel, or lubr…
VEHICLE PURCHASED NEW 16K MILES ON IT NOW ALL WORK DONE AT DEALER, SHUTS OFF RANDOMLY WITH NO WARNING AT STOP IDLE OR HIGHWAY DRIVING. EXTREMELY DANGEROUS I HAVE TAKEN IT TO THE DEALER 4 TIMES FOR THE SAME ISSUE. THE DEALER HAS UPDATED SOFTWARE THEY SAID SHOULD RESOLVE PROBLEM. THIS INTERMITTENT PROBLEM HAS OCCURRED AGAIN AND NO CODES FOUND BY THE DEALER. MERCEDES BENZ USA ATTEMPTING TO FIND RESOL…
Common questions
How serious is the engine problem on the 2015 mercedes-benz ML-Class?
It's a documented issue but not catastrophic. 9 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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