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4.5

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
24,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2014 Mercedes-Benz ML350 fuel system problems

fuel system problem

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2014 Mercedes-Benz ML350 Owner Comments

problem #5

Jan 292024

ML350

  • miles

A D V E R T I S E M E N T S

ML350 engine stalled while driving on an expressway and would not turn back on. ML350 needed to be towed where it was determined that water accumulated in the spare tire wheel well, leading to the fuel pump short circuiting. This is directly related to NHTSA campaign 22V955000. That recall repair was completed prior to this incident. Per the technician, the recall repair installed a water drain plug to prevent the water accumulation. This repair effectively failed - the drain plugs malfunctioned and were not allowing water to drain. MBUSA deny-??s responsibility for the failing drain plug - stating that the trunk weatherstripping is the root cause, not the failing drain plug. This is an unacceptable response and worth of the recall being expanded. The fuel pump control unit can still short out if MBUSA-??s poor excuse of a recall fix fails as it did with mine.

- Elmhurst, IL, USA

problem #4

Oct 052023

ML350

  • miles
I bought my vehicle into Mercedes Benz for a recall related to water collection in spare tire well which can cause a fuel pump control malfunction, NHTSA recall # 22V955. A few days ago, my vehicle could not start and I found water in my spare tire well. My OBD scanner tells me it is related to the fuel pump. I informed Mercedes Benz and they would not fix it. Obviously the work performed did not correct the recall. I'm writing here hoping I can get connected to the right channel to get this resolved as my vehicle is currently unusable. Thanks.

- Whitestone, NY, USA

problem #3

May 012022

ML350

  • miles
The oil fuel line is leaking on the engine this is currently a recall on my year and model suv

- Philadelphia, PA, USA

problem #2

Oct 012016

ML350

  • 60,000 miles
Diesel fuel leaks from a tiny crack forming on the oil filter housing. The filter has manufacturing or design defect that causes the bottom housing of the filter to form small cracks prematurely. The Mercedes part number of this filter is a 642 090 60 52 manufactured by mann, made in the czech republic. I have searched the internet and this appears to be a systemic problem where the filter forms cracks and leaks diesel fuel. There should be a recall issued for this immediately before there are any vehicle fires as a result of this defect. When the filter leaks, the fuel streams down the center of the engine block and through a weep hole to the bottom of the vehicle near the exhaust. This is in very close proximity to the extremely hot exhaust piping that could ignite the fuel and cause a fuel fire resulting in serious injury or fatalities.

- Parkland, FL, USA

problem #1

Oct 012016

ML350

  • 60,000 miles
Diesel fuel filter and/or diesel fuel hose leaks spilling highly flammable diesel fuel on the road. The diesel fuel could leak near the heat source or leak onto the road. This could lead to a crash or cause a fire in the presence of an ignition source.

- Parkland, FL, USA

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